{"id":60,"date":"2026-07-02T22:13:35","date_gmt":"2026-07-02T20:13:35","guid":{"rendered":"https:\/\/www.calibsun.com\/?page_id=60"},"modified":"2026-07-30T15:36:19","modified_gmt":"2026-07-30T13:36:19","slug":"datos-meteorologicos","status":"publish","type":"page","link":"http:\/\/www.calibsun.com\/es\/solar-data\/weather-data\/","title":{"rendered":"Expertise | Weather Data"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"60\" class=\"elementor elementor-60\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-57449b51 e-con-full e-flex e-con e-parent\" data-id=\"57449b51\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2989a3bd e-con-full e-flex e-con e-child\" data-id=\"2989a3bd\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;background_motion_fx_motion_fx_scrolling&quot;:&quot;yes&quot;,&quot;background_motion_fx_scale_effect&quot;:&quot;yes&quot;,&quot;background_motion_fx_scale_speed&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:3,&quot;sizes&quot;:[]},&quot;background_motion_fx_scale_range&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:{&quot;start&quot;:50,&quot;end&quot;:100}},&quot;background_motion_fx_scale_direction&quot;:&quot;out-in&quot;,&quot;background_motion_fx_devices&quot;:[&quot;desktop&quot;,&quot;laptop&quot;,&quot;tablet_extra&quot;,&quot;tablet&quot;,&quot;mobile&quot;]}\">\n\t\t<div class=\"elementor-element elementor-element-1b59109f e-con-full e-flex e-con e-child\" data-id=\"1b59109f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-59ee2381 elementor-icon-list--layout-inline elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"59ee2381\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items elementor-inline-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Calibsun | Expertise<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1762f4d4 elementor-widget elementor-widget-heading\" data-id=\"1762f4d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\"><span class=\"color-orange\">Weather Data<\/span> for Solar Forecasting: NWP, Satellite <\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5b060757 e-flex e-con-boxed e-con e-parent\" data-id=\"5b060757\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-2a8bf4ac e-con-full e-flex e-con e-child\" data-id=\"2a8bf4ac\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-51820df7 e-con-full e-flex e-con e-child\" data-id=\"51820df7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-57d012d elementor-widget-tablet__width-initial elementor-widget elementor-widget-heading\" data-id=\"57d012d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><b>Weather data is the foundation of any reliable solar production forecast<\/b><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4265a146 elementor-widget-tablet__width-initial elementor-widget elementor-widget-image\" data-id=\"4265a146\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"745\" height=\"635\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_On-site-.jpg\" class=\"attachment-large size-large wp-image-2667\" alt=\"\" srcset=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_On-site-.jpg 745w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_On-site--300x256.jpg 300w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_On-site--14x12.jpg 14w\" sizes=\"(max-width: 745px) 100vw, 745px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1baba4f8 e-con-full e-flex e-con e-child\" data-id=\"1baba4f8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-22e7c12e text-pretty elementor-widget elementor-widget-text-editor\" data-id=\"22e7c12e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The accuracy of a PV forecasting chain depends directly on the types of data collected, their spatial and temporal resolution, the period covered by historical weather data, and the ability to capture severe weather events that drive sharp variations in photovoltaic generation.\u00a0<\/span><\/p><p><b>Three families of weather data are required:<\/b><span style=\"font-weight: 400;\"> numerical weather prediction (NWP) models, satellite imagery, and ground-based meteorological stations. Each source contributes specific information on atmospheric variables that drive PV generation, solar irradiance (GHI, GTI), cloud cover, temperature, humidity, aerosols, albedo, and wind. None, taken in isolation, is sufficient to cover the full range of forecast horizons and weather regimes.<\/span><\/p><p><span style=\"font-weight: 400;\">CalibSun combines on-site measurements with post-processed NWP outputs and satellite images. This scientific approach, developed in collaboration with Mines Paris \u2013 PSL and over 15 years of photovoltaic expertise through Sola\u00efs, transforms heterogeneous weather data into high-performance forecasts for PV plant operators, traders, and aggregators worldwide.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-32dcc04d e-con-full e-flex e-con e-child\" data-id=\"32dcc04d\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5a082c17 elementor-widget-tablet__width-initial elementor-widget elementor-widget-heading\" data-id=\"5a082c17\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Key takeaways<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54b8fbf6 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"54b8fbf6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>Weather data<\/b> for solar forecasting combines four families: NWP, satellite imagery, ground observations, and reanalysis data.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"><b>NWP models<\/b> (ECMWF, GFS, AROME, ICON) cover horizons from D+1 to D+15, relying on data assimilation and ensemble forecasting.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Satellite imagery (Meteosat, GOES, Himawari), exploited via cloud motion vectors, dominates nowcasting (0\u20134 h) despite documented limitations.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Intelligent combination via blending, k-NN, and machine learning produces <b>deterministic and probabilistic forecasts (P5\u2013P95)<\/b>.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">CalibSun deploys deep meteorological expertise: variable selection, downscaling, seasonal debiasing, quality check, latency management, to deliver high-performance forecasts on multi-GW PV plants worldwide.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a2889d3 e-flex e-con-boxed e-con e-parent\" data-id=\"a2889d3\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fdf94f1 elementor-widget elementor-widget-heading\" data-id=\"fdf94f1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What are the main families of weather data used in <span class=\"color-orange\">solar forecasting?<\/span><\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-65e1809 e-grid e-con-full e-con e-child\" data-id=\"65e1809\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2180ff2 elementor-widget elementor-widget-text-editor\" data-id=\"2180ff2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">In the context of solar forecasting, <\/span><b>weather data<\/b><span style=\"font-weight: 400;\"> refers to the full set of meteorological variables \u2014 measured, simulated, or reanalysed \u2014 used to estimate solar irradiance and anticipate PV production. The relevant <\/span><b>parameters measured<\/b><span style=\"font-weight: 400;\"> include solar irradiance (GHI, GTI), cloud cover, <\/span><b>air temperature<\/b><span style=\"font-weight: 400;\">, <\/span><b>atmospheric pressure<\/b><span style=\"font-weight: 400;\"> (or <\/span><b>barometric pressure<\/b><span style=\"font-weight: 400;\">), <\/span><b>wind speed<\/b><span style=\"font-weight: 400;\">, <\/span><b>wind direction<\/b><span style=\"font-weight: 400;\">, relative humidity, aerosol concentration, column content of water, and precipitation (<\/span><b>rain<\/b><span style=\"font-weight: 400;\">, <\/span><b>snow<\/b><span style=\"font-weight: 400;\">, <\/span><b>snowfall<\/b><span style=\"font-weight: 400;\">).<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-21ffabc elementor-widget elementor-widget-text-editor\" data-id=\"21ffabc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">3 major families of weather data are exploited:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Numerical weather prediction (NWP)<\/b><span style=\"font-weight: 400;\"> outputs \u2014 physical simulations of the atmosphere.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Satellite imagery<\/b><span style=\"font-weight: 400;\"> \u2014 near-real-time observations of cloud cover.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ground-based weather observations<\/b><span style=\"font-weight: 400;\"> \u2014 measurements from <\/span><b>weather stations<\/b><span style=\"font-weight: 400;\">, pyranometers, and sky imagers.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e157de elementor-widget elementor-widget-ucaddon_ue_table\" data-id=\"3e157de\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ucaddon_ue_table.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n<!-- start Unlimited Table -->\n\t\t<link id='font-awesome-css' href='http:\/\/www.calibsun.com\/wp-content\/plugins\/unlimited-elements-for-elementor-premium\/assets_libraries\/font-awesome6\/fontawesome-all.min.css' type='text\/css' rel='stylesheet' >\n\t\t<link id='font-awesome-4-shim-css' href='http:\/\/www.calibsun.com\/wp-content\/plugins\/unlimited-elements-for-elementor-premium\/assets_libraries\/font-awesome6\/fontawesome-v4-shims.min.css' type='text\/css' rel='stylesheet' >\n\t\t<link id='uc_assets_ue_table_vendor_tabulator_min_css-css' href='https:\/\/www.calibsun.com\/wp-content\/uploads\/ac_assets\/ue_table\/vendor\/tabulator.min.css' type='text\/css' rel='stylesheet' >\n\n<style>\/* widget: Unlimited Table *\/\n\n#uc_ue_table_elementor_3e157de.ue-table {\n  display: flex;\n  flex-direction: column;\n  opacity: 1;\n  transition: opacity .3s ease-in-out;\n}\n\n\n#uc_ue_table_elementor_3e157de .tabulator-header .tabulator-col svg,\n#uc_ue_table_elementor_3e157de .tabulator-table .tabulator-cell svg {\n  height:1em;\n  width:1em;\n}\n\n\n#uc_ue_table_elementor_3e157de.ue-table.uc-show {\n  opacity: 1;\n}\n\n\n#uc_ue_table_elementor_3e157de .ue-table__tools {\n  display: flex;\n  justify-content: flex-end;\n  }\n\n#uc_ue_table_elementor_3e157de .ue-table__search-btn,\n#uc_ue_table_elementor_3e157de .ue-table__search-fields-toggle {\n  height: 100%\n}\n\n#uc_ue_table_elementor_3e157de .ue-table__filter-container {\n  position: relative;\n  display: flex;\n  justify-content: center;\n  align-items: center;\n}\n\n#uc_ue_table_elementor_3e157de .ue-table__search-fields {\n  position: absolute;\n  top: 0;\n  width: 100%;\n  max-height: 200px;\n  overflow: auto;\n  list-style-type: none;\n  z-index: 2;\n  display: flex;\n  flex-direction: column;\n  gap: .5em;\n  transform-origin: top center;\n  transform: scaleY(0);\n  transition: transform .3s ease-in-out;\n}\n\n#uc_ue_table_elementor_3e157de .ue-table__search-fields.uc-show {\n  transform: scaleY(1);\n}\n\n#uc_ue_table_elementor_3e157de .ue-table__search-fields li {\n  display: flex;\n  align-items: center;\n  gap: 0.5em;\n}\n\n#uc_ue_table_elementor_3e157de .ue-table-icon {\n  position: relative;\n\tdisplay: flex;\n    justify-content: center;\n    align-items: center;\n  cursor: pointer;\n  padding: 5px;\n}\n\n\n.ue-table__templates-container {\n\tdisplay: none;\n}\n\n#uc_ue_table_elementor_3e157de .tabulator-cell {\t\n  white-space: normal;\n}\n\n  #uc_ue_table_elementor_3e157de .tabulator-responsive-collapse {\t\n      white-space: normal;\n  }\n\n#uc_ue_table_elementor_3e157de .tabulator .tabulator-header .tabulator-col {\n  color: #FFFFFF;\n  background-color: #FFFFFF00;\n}\n\n#uc_ue_table_elementor_3e157de .tabulator .tabulator-header .tabulator-col:hover {\n  background-color: #FFFFFF00;\n}\n\n\n  #uc_ue_table_elementor_3e157de .tabulator .tabulator-header .tabulator-col,\n  #uc_ue_table_elementor_3e157de .tabulator .tabulator-header .tabulator-cell,\n  #uc_ue_table_elementor_3e157de .tabulator .tabulator-row .tabulator-col,\n  #uc_ue_table_elementor_3e157de .tabulator .tabulator-row .tabulator-cell {\n      border-left-style: solid;\n    border-left: none;\n  }\n  #uc_ue_table_elementor_3e157de .tabulator-col-resize-handle {\n    border-width: 1px;\n      border-left-color: #555555;\n    border-left-style: solid;\n  }\n\n@media screen and (max-width: 1024px) {\n  #uc_ue_table_elementor_3e157de .tabulator-col-resize-handle {\n    border-width: ;\n  }\n}\n@media screen and (max-width: 767px) {\n  #uc_ue_table_elementor_3e157de .tabulator-col-resize-handle {\n    border-width: ;\n  }\n}\n\n#uc_ue_table_elementor_3e157de .tabulator-headers .tabulator-col:last-of-type,\n#uc_ue_table_elementor_3e157de .tabulator-row .tabulator-cell:last-of-type{\n  border-right: none !important;\n}\n\n#uc_ue_table_elementor_3e157de .tabulator-col-resize-handle:last-of-type {\n  display: none;\n}\n\n\n.tabulator-col,\n.tabulator-row,\n.tabulator-cell,\n.ue-table-column__button {\n  transition: all .2s ease-in-out;\n}\n\n.ue-table-column__button {\n  display: inline-block;\n}\n\n\/*\n.tabulator-headers>.tabulator-col:not([class*='elementor-repeater-item']),\n.tabulator-table>.tabulator-row>.tabulator-cell:not([tabulator-field*='column']) {\n\twidth: 100px !important;\n}\n*\/\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n   \n\n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n   \n\n    \t \n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n   \n\n    \t \n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n<\/style>\n\n<div id=\"uc_ue_table_elementor_3e157de\" class=\"ue-table\">\n    <div class=\"ue-table__tools\" role=\"menu\">\n                            <\/div>\n  <div class=\"ue-table__container\" tabindex=\"0\"><\/div>\n  <div class=\"ue-table__templates-container\">\n  \t\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n \n  <\/div>\n<\/div>\n\n\n\n<!-- end Unlimited Table -->\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7b22fb14 e-flex e-con-boxed e-con e-parent\" data-id=\"7b22fb14\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-b53ce10 e-con-full e-flex e-con e-child\" data-id=\"b53ce10\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-988e6c3 e-con-full e-flex e-con e-child\" data-id=\"988e6c3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6f71a0 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"6f71a0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"682\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-51-1024x873.png\" class=\"attachment-large size-large wp-image-1775\" alt=\"\" srcset=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-51-1024x873.png 1024w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-51-300x256.png 300w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-51-768x655.png 768w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-51-1536x1309.png 1536w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-51-14x12.png 14w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-51.png 1552w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-23900782 e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"23900782\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInRight&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-78b7efcd elementor-widget elementor-widget-heading\" data-id=\"78b7efcd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Numerical weather prediction (NWP) models<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-177e3d82 elementor-widget elementor-widget-text-editor\" data-id=\"177e3d82\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">NWP models simulate the atmosphere by numerically solving the physical equations governing fluid dynamics, radiative transfer, and thermodynamics. They produce forecasts of meteorological variables over horizons ranging from a few hours to ten days. Two principles are central to their operation: <\/span><b>data assimilation<\/b><span style=\"font-weight: 400;\"> and <\/span><b>ensemble forecasting<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e8c1260 elementor-widget elementor-widget-ucaddon_ue_table\" data-id=\"e8c1260\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ucaddon_ue_table.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n<!-- start Unlimited Table -->\n\n<style>\/* widget: Unlimited Table *\/\n\n#uc_ue_table_elementor_e8c1260.ue-table {\n  display: flex;\n  flex-direction: column;\n  opacity: 1;\n  transition: opacity .3s ease-in-out;\n}\n\n\n#uc_ue_table_elementor_e8c1260 .tabulator-header .tabulator-col svg,\n#uc_ue_table_elementor_e8c1260 .tabulator-table .tabulator-cell svg {\n  height:1em;\n  width:1em;\n}\n\n\n#uc_ue_table_elementor_e8c1260.ue-table.uc-show {\n  opacity: 1;\n}\n\n\n#uc_ue_table_elementor_e8c1260 .ue-table__tools {\n  display: flex;\n  justify-content: flex-end;\n  }\n\n#uc_ue_table_elementor_e8c1260 .ue-table__search-btn,\n#uc_ue_table_elementor_e8c1260 .ue-table__search-fields-toggle {\n  height: 100%\n}\n\n#uc_ue_table_elementor_e8c1260 .ue-table__filter-container {\n  position: relative;\n  display: flex;\n  justify-content: center;\n  align-items: center;\n}\n\n#uc_ue_table_elementor_e8c1260 .ue-table__search-fields {\n  position: absolute;\n  top: 0;\n  width: 100%;\n  max-height: 200px;\n  overflow: auto;\n  list-style-type: none;\n  z-index: 2;\n  display: flex;\n  flex-direction: column;\n  gap: .5em;\n  transform-origin: top center;\n  transform: scaleY(0);\n  transition: transform .3s ease-in-out;\n}\n\n#uc_ue_table_elementor_e8c1260 .ue-table__search-fields.uc-show {\n  transform: scaleY(1);\n}\n\n#uc_ue_table_elementor_e8c1260 .ue-table__search-fields li {\n  display: flex;\n  align-items: center;\n  gap: 0.5em;\n}\n\n#uc_ue_table_elementor_e8c1260 .ue-table-icon {\n  position: relative;\n\tdisplay: flex;\n    justify-content: center;\n    align-items: center;\n  cursor: pointer;\n  padding: 5px;\n}\n\n\n.ue-table__templates-container {\n\tdisplay: none;\n}\n\n#uc_ue_table_elementor_e8c1260 .tabulator-cell {\t\n  white-space: normal;\n}\n\n  #uc_ue_table_elementor_e8c1260 .tabulator-responsive-collapse {\t\n      white-space: normal;\n  }\n\n#uc_ue_table_elementor_e8c1260 .tabulator .tabulator-header .tabulator-col {\n  color: #FFFFFF;\n  background-color: #FFFFFF00;\n}\n\n#uc_ue_table_elementor_e8c1260 .tabulator .tabulator-header .tabulator-col:hover {\n  background-color: #FFFFFF00;\n}\n\n\n  #uc_ue_table_elementor_e8c1260 .tabulator .tabulator-header .tabulator-col,\n  #uc_ue_table_elementor_e8c1260 .tabulator .tabulator-header .tabulator-cell,\n  #uc_ue_table_elementor_e8c1260 .tabulator .tabulator-row .tabulator-col,\n  #uc_ue_table_elementor_e8c1260 .tabulator .tabulator-row .tabulator-cell {\n      border-left-style: solid;\n    border-left: none;\n  }\n  #uc_ue_table_elementor_e8c1260 .tabulator-col-resize-handle {\n    border-width: 1px;\n      border-left-color: #555555;\n    border-left-style: solid;\n  }\n\n@media screen and (max-width: 1024px) {\n  #uc_ue_table_elementor_e8c1260 .tabulator-col-resize-handle {\n    border-width: ;\n  }\n}\n@media screen and (max-width: 767px) {\n  #uc_ue_table_elementor_e8c1260 .tabulator-col-resize-handle {\n    border-width: ;\n  }\n}\n\n#uc_ue_table_elementor_e8c1260 .tabulator-headers .tabulator-col:last-of-type,\n#uc_ue_table_elementor_e8c1260 .tabulator-row .tabulator-cell:last-of-type{\n  border-right: none !important;\n}\n\n#uc_ue_table_elementor_e8c1260 .tabulator-col-resize-handle:last-of-type {\n  display: none;\n}\n\n\n.tabulator-col,\n.tabulator-row,\n.tabulator-cell,\n.ue-table-column__button {\n  transition: all .2s ease-in-out;\n}\n\n.ue-table-column__button {\n  display: inline-block;\n}\n\n\/*\n.tabulator-headers>.tabulator-col:not([class*='elementor-repeater-item']),\n.tabulator-table>.tabulator-row>.tabulator-cell:not([tabulator-field*='column']) {\n\twidth: 100px !important;\n}\n*\/\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n   \n\n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n   \n\n    \t \n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n   \n\n    \t \n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n   \n\n    \t \n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n<\/style>\n\n<div id=\"uc_ue_table_elementor_e8c1260\" class=\"ue-table\">\n    <div class=\"ue-table__tools\" role=\"menu\">\n                            <\/div>\n  <div class=\"ue-table__container\" tabindex=\"0\"><\/div>\n  <div class=\"ue-table__templates-container\">\n  \t\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n \n  <\/div>\n<\/div>\n\n\n\n<!-- end Unlimited Table -->\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b7814c elementor-widget elementor-widget-text-editor\" data-id=\"7b7814c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Global models are well suited to medium- and long-range horizons (D+1 to D+10). Regional models, driven by global boundary conditions, offer finer spatial resolution and improved representation of local <\/span><b>weather patterns<\/b><span style=\"font-weight: 400;\">, particularly in complex terrain.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-170bf9ee e-con-full e-flex e-con e-child\" data-id=\"170bf9ee\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-322333a6 e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"322333a6\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInLeft&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-61b140fc elementor-widget elementor-widget-heading\" data-id=\"61b140fc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Satellite imagery<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6eb1344b elementor-widget elementor-widget-text-editor\" data-id=\"6eb1344b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Satellite imagery is the main source of weather data for short-range solar forecasting (15 minutes to 6 hours). The geostationary satellites used are mainly:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Meteosat<\/b><span style=\"font-weight: 400;\"> (EUMETSAT) \u2014 Europe, Africa, Atlantic.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>GOES<\/b><span style=\"font-weight: 400;\"> (NOAA) \u2014 Americas.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Himawari<\/b><span style=\"font-weight: 400;\"> (JMA, Japan) \u2014 Asia\u2013Pacific.<\/span><\/li><\/ul><p>\u00a0<\/p><p><span style=\"font-weight: 400;\">These satellites provide multispectral images with a spatial resolution of 1 to 5 km and a temporal resolution of 10 to 15 minutes (down to 1\u20132 minutes in rapid scan mode). From successive images, <\/span><b>cloud motion vectors<\/b><span style=\"font-weight: 400;\"> are derived: by tracking the displacement of cloud structures between two acquisitions, the model extrapolates short-term cloud cover evolution and, consequently, surface irradiance.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1a0b7255 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"1a0b7255\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"723\" height=\"651\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Capture-decran-2026-07-10-091904.png\" class=\"attachment-large size-large wp-image-3050\" alt=\"\" srcset=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Capture-decran-2026-07-10-091904.png 723w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Capture-decran-2026-07-10-091904-300x270.png 300w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Capture-decran-2026-07-10-091904-13x12.png 13w\" sizes=\"(max-width: 723px) 100vw, 723px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-46c1bb2 e-con-full e-flex e-con e-child\" data-id=\"46c1bb2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-15e4a13 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"15e4a13\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"682\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-52-1024x873.png\" class=\"attachment-large size-large wp-image-1774\" alt=\"\" srcset=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-52-1024x873.png 1024w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-52-300x256.png 300w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-52-768x655.png 768w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-52-1536x1309.png 1536w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-52-14x12.png 14w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Export_Weather-data-52.png 1552w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9f2e28a e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"9f2e28a\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInRight&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-044b52f elementor-widget elementor-widget-heading\" data-id=\"044b52f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Ground-based weather observations<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-17eee65 elementor-widget elementor-widget-text-editor\" data-id=\"17eee65\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">On-site measurements include pyranometer data (GHI, GTI), SCADA real-time production data, and sky imager observations. They provide the only direct ground truth of what actually happens on the plant and are essential for bias correction, dynamic recalibration of NWP and satellite outputs, and very short-term forecasting.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7b5d576 e-flex e-con-boxed e-con e-parent\" data-id=\"7b5d576\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3829372 elementor-widget elementor-widget-heading\" data-id=\"3829372\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">CalibSun's integration and <span class=\"color-orange\">meteorological expertise<\/span><\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bebf4b4 e-con-full e-flex e-con e-child\" data-id=\"bebf4b4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dc461ab elementor-widget elementor-widget-heading\" data-id=\"dc461ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Combining sources with the k-NN method<\/h3>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3a62d48 e-grid e-con-full e-con e-child\" data-id=\"3a62d48\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-c670a9f e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"c670a9f\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;animation&quot;:&quot;fadeIn&quot;,&quot;animation_delay&quot;:200}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-579ec06 elementor-widget__width-inherit elementor-widget elementor-widget-image\" data-id=\"579ec06\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"293\" height=\"226\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/ponderation.png\" class=\"attachment-large size-large wp-image-2434\" alt=\"\" srcset=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/ponderation.png 293w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/ponderation-16x12.png 16w\" sizes=\"(max-width: 293px) 100vw, 293px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cd54a48 elementor-widget elementor-widget-heading\" data-id=\"cd54a48\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Dynamic weighting by horizon<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-67c34a4 elementor-widget elementor-widget-text-editor\" data-id=\"67c34a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">CalibSun&#8217;s algorithm is similar to a <\/span><b>k-Nearest Neighbors (k-NN)<\/b><span style=\"font-weight: 400;\"> machine learning method. The weights of each source are <\/span><b>recalculated for every forecast and for every horizon<\/b><span style=\"font-weight: 400;\">, at a frequency ranging from <\/span><b>1 to 15 minutes<\/b><span style=\"font-weight: 400;\">. The method computes the distance between the current meteorological situation and the full set of historical situations, identifies the closest analogues, and derives a probabilistic forecast from their observed outcomes.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5bcb37b e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"5bcb37b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;animation&quot;:&quot;fadeIn&quot;,&quot;animation_delay&quot;:500}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3f0d5fc elementor-widget__width-inherit elementor-widget elementor-widget-image\" data-id=\"3f0d5fc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"342\" height=\"271\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Probabilistic.png\" class=\"attachment-large size-large wp-image-2436\" alt=\"\" srcset=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Probabilistic.png 342w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Probabilistic-300x238.png 300w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/Probabilistic-15x12.png 15w\" sizes=\"(max-width: 342px) 100vw, 342px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f0b106 elementor-widget elementor-widget-heading\" data-id=\"3f0b106\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Probabilistic forecasting<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b819850 elementor-widget elementor-widget-text-editor\" data-id=\"b819850\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Beyond a deterministic value, CalibSun produces <\/span><b>probabilistic forecasts<\/b><span style=\"font-weight: 400;\"> in the form of quantiles (typically <\/span><b>P5 to P95<\/b><span style=\"font-weight: 400;\">), quantifying the uncertainty associated with each forecast. These quantiles, derived from NWP ensembles and from the dispersion of analogue situations identified via k-NN, are essential for PV plant operators managing risk on large portfolios.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9344c04 elementor-widget elementor-widget-button\" data-id=\"9344c04\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"http:\/\/www.calibsun.com\/es\/solar-irradiance\/probabilistic-forecast\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Discover more<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ba4af9f e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"ba4af9f\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-80cd078 elementor-widget elementor-widget-heading\" data-id=\"80cd078\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Forecast horizons and source selection<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d3cf25 elementor-widget elementor-widget-ucaddon_ue_table\" data-id=\"6d3cf25\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ucaddon_ue_table.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n<!-- start Unlimited Table -->\n\n<style>\/* widget: Unlimited Table *\/\n\n#uc_ue_table_elementor_6d3cf25.ue-table {\n  display: flex;\n  flex-direction: column;\n  opacity: 1;\n  transition: opacity .3s ease-in-out;\n}\n\n\n#uc_ue_table_elementor_6d3cf25 .tabulator-header .tabulator-col svg,\n#uc_ue_table_elementor_6d3cf25 .tabulator-table .tabulator-cell svg {\n  height:1em;\n  width:1em;\n}\n\n\n#uc_ue_table_elementor_6d3cf25.ue-table.uc-show {\n  opacity: 1;\n}\n\n\n#uc_ue_table_elementor_6d3cf25 .ue-table__tools {\n  display: flex;\n  justify-content: flex-end;\n  }\n\n#uc_ue_table_elementor_6d3cf25 .ue-table__search-btn,\n#uc_ue_table_elementor_6d3cf25 .ue-table__search-fields-toggle {\n  height: 100%\n}\n\n#uc_ue_table_elementor_6d3cf25 .ue-table__filter-container {\n  position: relative;\n  display: flex;\n  justify-content: center;\n  align-items: center;\n}\n\n#uc_ue_table_elementor_6d3cf25 .ue-table__search-fields {\n  position: absolute;\n  top: 0;\n  width: 100%;\n  max-height: 200px;\n  overflow: auto;\n  list-style-type: none;\n  z-index: 2;\n  display: flex;\n  flex-direction: column;\n  gap: .5em;\n  transform-origin: top center;\n  transform: scaleY(0);\n  transition: transform .3s ease-in-out;\n}\n\n#uc_ue_table_elementor_6d3cf25 .ue-table__search-fields.uc-show {\n  transform: scaleY(1);\n}\n\n#uc_ue_table_elementor_6d3cf25 .ue-table__search-fields li {\n  display: flex;\n  align-items: center;\n  gap: 0.5em;\n}\n\n#uc_ue_table_elementor_6d3cf25 .ue-table-icon {\n  position: relative;\n\tdisplay: flex;\n    justify-content: center;\n    align-items: center;\n  cursor: pointer;\n  padding: 5px;\n}\n\n\n.ue-table__templates-container {\n\tdisplay: none;\n}\n\n#uc_ue_table_elementor_6d3cf25 .tabulator-cell {\t\n  white-space: normal;\n}\n\n  #uc_ue_table_elementor_6d3cf25 .tabulator-responsive-collapse {\t\n      white-space: normal;\n  }\n\n#uc_ue_table_elementor_6d3cf25 .tabulator .tabulator-header .tabulator-col {\n  color: #FFFFFF;\n  background-color: #FFFFFF00;\n}\n\n#uc_ue_table_elementor_6d3cf25 .tabulator .tabulator-header .tabulator-col:hover {\n  background-color: #FFFFFF00;\n}\n\n\n  #uc_ue_table_elementor_6d3cf25 .tabulator .tabulator-header .tabulator-col,\n  #uc_ue_table_elementor_6d3cf25 .tabulator .tabulator-header .tabulator-cell,\n  #uc_ue_table_elementor_6d3cf25 .tabulator .tabulator-row .tabulator-col,\n  #uc_ue_table_elementor_6d3cf25 .tabulator .tabulator-row .tabulator-cell {\n      border-left-style: solid;\n    border-left: none;\n  }\n  #uc_ue_table_elementor_6d3cf25 .tabulator-col-resize-handle {\n    border-width: 1px;\n      border-left-color: #555555;\n    border-left-style: solid;\n  }\n\n@media screen and (max-width: 1024px) {\n  #uc_ue_table_elementor_6d3cf25 .tabulator-col-resize-handle {\n    border-width: ;\n  }\n}\n@media screen and (max-width: 767px) {\n  #uc_ue_table_elementor_6d3cf25 .tabulator-col-resize-handle {\n    border-width: ;\n  }\n}\n\n#uc_ue_table_elementor_6d3cf25 .tabulator-headers .tabulator-col:last-of-type,\n#uc_ue_table_elementor_6d3cf25 .tabulator-row .tabulator-cell:last-of-type{\n  border-right: none !important;\n}\n\n#uc_ue_table_elementor_6d3cf25 .tabulator-col-resize-handle:last-of-type {\n  display: none;\n}\n\n\n.tabulator-col,\n.tabulator-row,\n.tabulator-cell,\n.ue-table-column__button {\n  transition: all .2s ease-in-out;\n}\n\n.ue-table-column__button {\n  display: inline-block;\n}\n\n\/*\n.tabulator-headers>.tabulator-col:not([class*='elementor-repeater-item']),\n.tabulator-table>.tabulator-row>.tabulator-cell:not([tabulator-field*='column']) {\n\twidth: 100px !important;\n}\n*\/\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n\t    \n\n\n\n   \n\n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n   \n\n    \t \n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n   \n\n    \t \n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n   \n\n    \t \n  \n   \n  \n\n\n\n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n\n\n\t\t\t \n\t\n     \n  \n\n\n\n<\/style>\n\n<div id=\"uc_ue_table_elementor_6d3cf25\" class=\"ue-table\">\n    <div class=\"ue-table__tools\" role=\"menu\">\n                            <\/div>\n  <div class=\"ue-table__container\" tabindex=\"0\"><\/div>\n  <div class=\"ue-table__templates-container\">\n  \t\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n \n  <\/div>\n<\/div>\n\n\n\n<!-- end Unlimited Table -->\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5dda9df7 e-flex e-con-boxed e-con e-parent\" data-id=\"5dda9df7\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-419de849 e-con-full e-flex e-con e-child\" data-id=\"419de849\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-47ddea51 e-con-full e-flex e-con e-child\" data-id=\"47ddea51\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;laptop&quot;,&quot;tablet_extra&quot;,&quot;tablet&quot;],&quot;sticky_offset&quot;:120,&quot;sticky_parent&quot;:&quot;yes&quot;,&quot;sticky_effects_offset&quot;:0,&quot;sticky_anchor_link_offset&quot;:0}\">\n\t\t<div class=\"elementor-element elementor-element-6456930f e-con-full e-flex e-con e-child\" data-id=\"6456930f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3156bc30 elementor-icon-list--layout-inline elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"3156bc30\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items elementor-inline-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Weather Data<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-640ed069 elementor-widget elementor-widget-heading\" data-id=\"640ed069\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">CalibSun's meteorological expertise<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-206a530e e-con-full e-flex e-con e-child\" data-id=\"206a530e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3d7abcfa elementor-widget elementor-widget-button\" data-id=\"3d7abcfa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#variable-selection-integration\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Variable selection and integration of the latest models<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-18f06f8 elementor-widget elementor-widget-button\" data-id=\"18f06f8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#advanced-meteorological\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Advanced meteorological post-processing<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-82790c1 elementor-widget elementor-widget-button\" data-id=\"82790c1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#scientic-expertise\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Scientific expertise in meteorology<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e0c9cfd elementor-widget elementor-widget-button\" data-id=\"7e0c9cfd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#high-performance\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">High-performance forecasting worldwide<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1a3336f6 e-con-full e-flex e-con e-child\" data-id=\"1a3336f6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5b95b570 e-con-full e-flex e-con e-child\" data-id=\"5b95b570\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-43ee5e3d elementor-absolute elementor-widget elementor-widget-menu-anchor\" data-id=\"43ee5e3d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_position&quot;:&quot;absolute&quot;}\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"variable-selection-integration\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-89d3230 elementor-widget__width-inherit elementor-widget elementor-widget-image\" data-id=\"89d3230\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"206\" height=\"272\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/publications.svg\" class=\"attachment-large size-large wp-image-1648\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-68cb3412 elementor-widget elementor-widget-heading\" data-id=\"68cb3412\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Variable selection and integration of the latest models<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f4d7f23 elementor-widget elementor-widget-text-editor\" data-id=\"3f4d7f23\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">CalibSun maintains active monitoring of newly available NWP models. Each new model is <\/span><b>tested across multiple sites and climates<\/b><span style=\"font-weight: 400;\">, and is integrated into the operational chain only if a positive contribution to forecast quality is demonstrated. The variable selection methodology,\u00a0 presented at the <\/span><b>ICEM 2025<\/b><span style=\"font-weight: 400;\"> scientific conference,\u00a0 identifies the NWP variables with the strongest impact on surface irradiance, by cross-checking with on-site measurements across diverse climatic contexts.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4f601af6 e-con-full e-flex e-con e-child\" data-id=\"4f601af6\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-42c844f7 elementor-absolute elementor-widget elementor-widget-menu-anchor\" data-id=\"42c844f7\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_position&quot;:&quot;absolute&quot;}\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"advanced-meteorological\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-20c0255 elementor-widget__width-inherit elementor-widget elementor-widget-image\" data-id=\"20c0255\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"146\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/verify-before-use.svg\" class=\"attachment-large size-large wp-image-1670\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2bf8adca elementor-widget elementor-widget-heading\" data-id=\"2bf8adca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Advanced meteorological post-processing<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-328d7c20 elementor-widget elementor-widget-text-editor\" data-id=\"328d7c20\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Raw NWP outputs require dedicated post-processing to reach the precision level expected on PV sites. CalibSun deploys several layers of treatment:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Downscaling:<\/b><span style=\"font-weight: 400;\"> statistical and dynamic refinement of NWP outputs from a coarse grid (9\u201325 km) to plant scale.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Quality check of measurement data:<\/b><span style=\"font-weight: 400;\"> validation of on-site observations to detect sensor faults, drift, or anomalies before integration in the forecasting chain.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1b706e1 e-con-full e-flex e-con e-child\" data-id=\"1b706e1\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-65118fa5 elementor-absolute elementor-widget elementor-widget-menu-anchor\" data-id=\"65118fa5\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_position&quot;:&quot;absolute&quot;}\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"scientic-expertise\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c00d64 elementor-widget__width-inherit elementor-widget elementor-widget-image\" data-id=\"4c00d64\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"262\" height=\"285\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/solar-academic.svg\" class=\"attachment-large size-large wp-image-1660\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-498f7290 elementor-widget elementor-widget-heading\" data-id=\"498f7290\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Scientific expertise in meteorology<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-575eb2e3 elementor-widget elementor-widget-text-editor\" data-id=\"575eb2e3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">CalibSun&#8217;s meteorological expertise is led by <\/span><b>Alexandre Boilley<\/b><span style=\"font-weight: 400;\">, lead meteorologist, who completed his PhD at <\/span><b>M\u00e9t\u00e9o-France in 2011<\/b><span style=\"font-weight: 400;\"> on the numerical simulation of local phenomena with assimilation of ground measurement data, and who has <\/span><b>15 years of experience in solar irradiance forecasting<\/b><span style=\"font-weight: 400;\">. This expertise is complemented by deep PV and solar resource know-how inherited from <\/span><b>Sola\u00efs<\/b><span style=\"font-weight: 400;\">, CalibSun&#8217;s parent company, which has been collaborating with <\/span><b>Mines Paris \u2013 PSL since 2009<\/b><span style=\"font-weight: 400;\"> on solar resource assessment and forecasting. A team of scientific experts provides continuous backup, supported by peer-reviewed publications and conference contributions.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4bcc7dad e-con-full e-flex e-con e-child\" data-id=\"4bcc7dad\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-244000ac elementor-absolute elementor-widget elementor-widget-menu-anchor\" data-id=\"244000ac\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_position&quot;:&quot;absolute&quot;}\" data-widget_type=\"menu-anchor.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-menu-anchor\" id=\"high-performance\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6607df7 elementor-widget__width-inherit elementor-widget elementor-widget-image\" data-id=\"6607df7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"161\" height=\"240\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/ranked-first_1.svg\" class=\"attachment-large size-large wp-image-1652\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-550cab45 elementor-widget elementor-widget-heading\" data-id=\"550cab45\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">High-performance forecasting worldwide<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5c4d6b1c elementor-widget elementor-widget-text-editor\" data-id=\"5c4d6b1c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The combination of multi-source weather data, dynamic blending, probabilistic forecasting, advanced post-processing, and on-site recalibration allows CalibSun to deliver high-performance forecasts in highly diverse climatic contexts, from arid zones (high aerosol load) to humid tropical regions (deep convection) and high latitudes (low solar angle, <\/span><b>snow<\/b><span style=\"font-weight: 400;\"> on ground). This robustness is particularly critical for operators who must guarantee forecast accuracy across heterogeneous sites and varied <\/span><b>weather events<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">The mismatch between NWP resolution (9\u201325 km) and the physical extent of a PV plant,\u00a0 from a few hundred metres to several kilometres for <\/span><b>multi-GW plants such as Khavda<\/b><span style=\"font-weight: 400;\">, means that local meteorological phenomena are not resolved by the models. Downscaling and on-site recalibration are therefore essential to capture intra-plant variability that drives actual generation<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-184e8ba elementor-widget elementor-widget-button\" data-id=\"184e8ba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"http:\/\/www.calibsun.com\/es\/solar-irradiance\/spacialized-ghi-gti\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn more<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-660a6d51 e-con-full e-flex e-con e-parent\" data-id=\"660a6d51\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-aa00cec elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"aa00cec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"721\" height=\"868\" src=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/frequently-asked-questions-2.webp\" class=\"attachment-large size-large wp-image-1902\" alt=\"\" srcset=\"https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/frequently-asked-questions-2.webp 721w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/frequently-asked-questions-2-249x300.webp 249w, https:\/\/www.calibsun.com\/wp-content\/uploads\/2026\/07\/frequently-asked-questions-2-10x12.webp 10w\" sizes=\"(max-width: 721px) 100vw, 721px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1d161933 e-con-full e-flex e-con e-child\" data-id=\"1d161933\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-da22c71 e-con-full e-flex e-con e-child\" data-id=\"da22c71\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-163a9fa3 elementor-icon-list--layout-inline elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"163a9fa3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items elementor-inline-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Questions<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d21a022 elementor-widget elementor-widget-heading\" data-id=\"4d21a022\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Frequently asked questions about weather data<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7006f809 elementor-widget elementor-widget-n-accordion\" data-id=\"7006f809\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1870\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1870\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><h3 class=\"e-n-accordion-item-title-text\"> What is the difference between NWP and satellite imagery for PV forecasting? <\/h3><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewBox=\"0 0 40 40\" fill=\"none\"><path d=\"M24.6998 11.6351L31.5103 27.0167C32.1857 28.5487 33.3677 30.1421 35 31L33.1989 31C30.3846 31 27.8518 29.2228 26.6135 26.4652L20.8724 13.1671C20.8724 13.1671 20.591 12.6769 20.0844 12.7382C19.5779 12.7382 19.2964 13.1671 19.2964 13.1671L13.5553 26.4652C12.3734 29.2228 9.78424 31 6.96998 31L5 31C6.63227 30.1421 7.81426 28.5487 8.48968 27.0167L15.3002 11.6351C16.0882 9.61282 18.7899 9 19.9719 9C21.1538 9 23.8555 9.55153 24.6435 11.6351L24.6998 11.6351Z\" fill=\"currentColor\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewBox=\"0 0 40 40\" fill=\"none\"><path d=\"M24.6998 28.3649L31.5103 12.9833C32.1857 11.4513 33.3677 9.85794 35 9L33.1989 9C30.3846 9 27.8518 10.7772 26.6135 13.5348L20.8724 26.8329C20.8724 26.8329 20.591 27.3231 20.0844 27.2618C19.5779 27.2618 19.2964 26.8329 19.2964 26.8329L13.5553 13.5348C12.3734 10.7772 9.78424 9 6.96998 9L5 9C6.63227 9.85794 7.81426 11.4513 8.48968 12.9833L15.3002 28.3649C16.0882 30.3872 18.7899 31 19.9719 31C21.1538 31 23.8555 30.4485 24.6435 28.3649L24.6998 28.3649Z\" fill=\"currentColor\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1870\" class=\"elementor-element elementor-element-397e0728 e-con-full e-flex e-con e-child\" data-id=\"397e0728\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-24579654 elementor-widget elementor-widget-text-editor\" data-id=\"24579654\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">NWP models simulate the atmosphere through physical equations and are relevant from a few hours up to about 15 days. Satellite imagery observes cloud cover in near real time and excels in nowcasting and short horizons (0\u20136 h) via cloud motion vectors.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1871\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1871\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><h3 class=\"e-n-accordion-item-title-text\"> Why combine multiple weather data sources? <\/h3><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewBox=\"0 0 40 40\" fill=\"none\"><path d=\"M24.6998 11.6351L31.5103 27.0167C32.1857 28.5487 33.3677 30.1421 35 31L33.1989 31C30.3846 31 27.8518 29.2228 26.6135 26.4652L20.8724 13.1671C20.8724 13.1671 20.591 12.6769 20.0844 12.7382C19.5779 12.7382 19.2964 13.1671 19.2964 13.1671L13.5553 26.4652C12.3734 29.2228 9.78424 31 6.96998 31L5 31C6.63227 30.1421 7.81426 28.5487 8.48968 27.0167L15.3002 11.6351C16.0882 9.61282 18.7899 9 19.9719 9C21.1538 9 23.8555 9.55153 24.6435 11.6351L24.6998 11.6351Z\" fill=\"currentColor\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewBox=\"0 0 40 40\" fill=\"none\"><path d=\"M24.6998 28.3649L31.5103 12.9833C32.1857 11.4513 33.3677 9.85794 35 9L33.1989 9C30.3846 9 27.8518 10.7772 26.6135 13.5348L20.8724 26.8329C20.8724 26.8329 20.591 27.3231 20.0844 27.2618C19.5779 27.2618 19.2964 26.8329 19.2964 26.8329L13.5553 13.5348C12.3734 10.7772 9.78424 9 6.96998 9L5 9C6.63227 9.85794 7.81426 11.4513 8.48968 12.9833L15.3002 28.3649C16.0882 30.3872 18.7899 31 19.9719 31C21.1538 31 23.8555 30.4485 24.6435 28.3649L24.6998 28.3649Z\" fill=\"currentColor\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1871\" class=\"elementor-element elementor-element-25aaa4ee e-con-full e-flex e-con e-child\" data-id=\"25aaa4ee\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-23493b1b elementor-widget elementor-widget-text-editor\" data-id=\"23493b1b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">No single source covers all horizons or geographic contexts. CalibSun&#8217;s KNN-based hybrid approach dynamically weights NWP, satellite, and on-site measurements according to forecast horizon and local climate, with weights updated every 1 to 15 minutes. <\/span><span style=\"font-weight: 400;\">This delivers forecast accuracy across diverse weather conditions &#8211; from severe thunderstorms and damaging winds to rainfall and drought scenarios &#8211; ensuring reliable daily forecasts for PV plant operators managing multi-MW portfolios. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1872\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1872\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><h3 class=\"e-n-accordion-item-title-text\"> Why is solar irradiance harder to forecast than other meteorological variables? <\/h3><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewBox=\"0 0 40 40\" fill=\"none\"><path d=\"M24.6998 11.6351L31.5103 27.0167C32.1857 28.5487 33.3677 30.1421 35 31L33.1989 31C30.3846 31 27.8518 29.2228 26.6135 26.4652L20.8724 13.1671C20.8724 13.1671 20.591 12.6769 20.0844 12.7382C19.5779 12.7382 19.2964 13.1671 19.2964 13.1671L13.5553 26.4652C12.3734 29.2228 9.78424 31 6.96998 31L5 31C6.63227 30.1421 7.81426 28.5487 8.48968 27.0167L15.3002 11.6351C16.0882 9.61282 18.7899 9 19.9719 9C21.1538 9 23.8555 9.55153 24.6435 11.6351L24.6998 11.6351Z\" fill=\"currentColor\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewBox=\"0 0 40 40\" fill=\"none\"><path d=\"M24.6998 28.3649L31.5103 12.9833C32.1857 11.4513 33.3677 9.85794 35 9L33.1989 9C30.3846 9 27.8518 10.7772 26.6135 13.5348L20.8724 26.8329C20.8724 26.8329 20.591 27.3231 20.0844 27.2618C19.5779 27.2618 19.2964 26.8329 19.2964 26.8329L13.5553 13.5348C12.3734 10.7772 9.78424 9 6.96998 9L5 9C6.63227 9.85794 7.81426 11.4513 8.48968 12.9833L15.3002 28.3649C16.0882 30.3872 18.7899 31 19.9719 31C21.1538 31 23.8555 30.4485 24.6435 28.3649L24.6998 28.3649Z\" fill=\"currentColor\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1872\" class=\"elementor-element elementor-element-45fe3cbf e-con-full e-flex e-con e-child\" data-id=\"45fe3cbf\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-54e86ab elementor-widget elementor-widget-text-editor\" data-id=\"54e86ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">In NWP models, irradiance is a diagnostic variable computed at the end of the modelling chain, downstream of cloud cover estimation using radiative transfer techniques. It accumulates upstream errors and requires dedicated post-processing and on-site recalibration to reach operational accuracy on PV plants. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1873\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1873\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><h3 class=\"e-n-accordion-item-title-text\"> What are the strengths and limitations of satellite imagery ? <\/h3><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewBox=\"0 0 40 40\" fill=\"none\"><path d=\"M24.6998 11.6351L31.5103 27.0167C32.1857 28.5487 33.3677 30.1421 35 31L33.1989 31C30.3846 31 27.8518 29.2228 26.6135 26.4652L20.8724 13.1671C20.8724 13.1671 20.591 12.6769 20.0844 12.7382C19.5779 12.7382 19.2964 13.1671 19.2964 13.1671L13.5553 26.4652C12.3734 29.2228 9.78424 31 6.96998 31L5 31C6.63227 30.1421 7.81426 28.5487 8.48968 27.0167L15.3002 11.6351C16.0882 9.61282 18.7899 9 19.9719 9C21.1538 9 23.8555 9.55153 24.6435 11.6351L24.6998 11.6351Z\" fill=\"currentColor\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"40\" height=\"40\" viewBox=\"0 0 40 40\" fill=\"none\"><path d=\"M24.6998 28.3649L31.5103 12.9833C32.1857 11.4513 33.3677 9.85794 35 9L33.1989 9C30.3846 9 27.8518 10.7772 26.6135 13.5348L20.8724 26.8329C20.8724 26.8329 20.591 27.3231 20.0844 27.2618C19.5779 27.2618 19.2964 26.8329 19.2964 26.8329L13.5553 13.5348C12.3734 10.7772 9.78424 9 6.96998 9L5 9C6.63227 9.85794 7.81426 11.4513 8.48968 12.9833L15.3002 28.3649C16.0882 30.3872 18.7899 31 19.9719 31C21.1538 31 23.8555 30.4485 24.6435 28.3649L24.6998 28.3649Z\" fill=\"currentColor\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1873\" class=\"elementor-element elementor-element-338b8a0c e-con-full e-flex e-con e-child\" data-id=\"338b8a0c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e4d9778 elementor-widget elementor-widget-text-editor\" data-id=\"4e4d9778\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Satellite imagery is essential for <\/span><b>nowcasting<\/b><span style=\"font-weight: 400;\"> (0\u20134 h), where it outperforms NWP models. However, several limitations must be managed:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Multi-layer clouds:<\/b><span style=\"font-weight: 400;\"> difficulty distinguishing optical contributions from superimposed cloud layers.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Fog and low stratus:<\/b><span style=\"font-weight: 400;\"> poor contrast against the surface, especially over land.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Snow on ground:<\/b><span style=\"font-weight: 400;\"> confusion between snow cover and cloud cover (similar spectral signature in the visible).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Low solar angle:<\/b><span style=\"font-weight: 400;\"> strong distortions at dawn, dusk, and high latitudes.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Image edges:<\/b><span style=\"font-weight: 400;\"> geometric distortions at the limb of the satellite&#8217;s field of view.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">For PV plants located near the edge of a satellite&#8217;s coverage, CalibSun applies <\/span><b>on-site recalibration<\/b><span style=\"font-weight: 400;\">: forecasts are corrected using local ground measurements, which compensates for the degradation of satellite estimates in these zones \u2014 a differentiating approach specific to CalibSun.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the difference between NWP and satellite imagery for PV forecasting?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"NWP models simulate the atmosphere through physical equations and are relevant from a few hours up to about 15 days. Satellite imagery observes cloud cover in near real time and excels in nowcasting and short horizons (0\\u20136 h) via cloud motion vectors.\"}},{\"@type\":\"Question\",\"name\":\"Why combine multiple weather data sources?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No single source covers all horizons or geographic contexts. CalibSun&#8217;s KNN-based hybrid approach dynamically weights NWP, satellite, and on-site measurements according to forecast horizon and local climate, with weights updated every 1 to 15 minutes. This delivers forecast accuracy across diverse weather conditions &#8211; from severe thunderstorms and damaging winds to rainfall and drought scenarios &#8211; ensuring reliable daily forecasts for PV plant operators managing multi-MW portfolios.\"}},{\"@type\":\"Question\",\"name\":\"Why is solar irradiance harder to forecast than other meteorological variables?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"In NWP models, irradiance is a diagnostic variable computed at the end of the modelling chain, downstream of cloud cover estimation using radiative transfer techniques. It accumulates upstream errors and requires dedicated post-processing and on-site recalibration to reach operational accuracy on PV plants.\"}},{\"@type\":\"Question\",\"name\":\"What are the strengths and limitations of satellite imagery ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Satellite imagery is essential for nowcasting (0\\u20134 h), where it outperforms NWP models. However, several limitations must be managed:Multi-layer clouds: difficulty distinguishing optical contributions from superimposed cloud layers.Fog and low stratus: poor contrast against the surface, especially over land.Snow on ground: confusion between snow cover and cloud cover (similar spectral signature in the visible).Low solar angle: strong distortions at dawn, dusk, and high latitudes.Image edges: geometric distortions at the limb of the satellite&#8217;s field of view.For PV plants located near the edge of a satellite&#8217;s coverage, CalibSun applies on-site recalibration: forecasts are corrected using local ground measurements, which compensates for the degradation of satellite estimates in these zones \\u2014 a differentiating approach specific to CalibSun.\"}}]}<\/script>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Calibsun | Expertise Weather Data for Solar Forecasting: NWP, Satellite Weather data is the foundation of any reliable solar production forecast The accuracy of a PV forecasting chain depends directly on the types of data collected, their spatial and temporal resolution, the period covered by historical weather data, and the ability to capture severe weather [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":43,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-60","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"http:\/\/www.calibsun.com\/es\/wp-json\/wp\/v2\/pages\/60","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.calibsun.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/www.calibsun.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/www.calibsun.com\/es\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.calibsun.com\/es\/wp-json\/wp\/v2\/comments?post=60"}],"version-history":[{"count":0,"href":"http:\/\/www.calibsun.com\/es\/wp-json\/wp\/v2\/pages\/60\/revisions"}],"up":[{"embeddable":true,"href":"http:\/\/www.calibsun.com\/es\/wp-json\/wp\/v2\/pages\/43"}],"wp:attachment":[{"href":"http:\/\/www.calibsun.com\/es\/wp-json\/wp\/v2\/media?parent=60"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}