Solar forecasting empowered by on-site data
By enriching our models with on-site data, we provide the most accurate and reliable forecasts, even in the most challenging climates.

3 solar forecasting tools to optimize the production and use of solar energy

NOWCAST
From 1 minute
Installation of a network of cameras & sensors on-site
Near-real-time forecast
Power drop detection

FORECAST
From 15 minutes
Integration of existing data from your photovoltaïc plant
Intraday and day-ahead
Unmatched accuracy
Nowcast

INSTANT - Nowcasting from 1 minute with a network of cameras & sensors on site
Nowcast and forecast solar irradiance and production with unmatched precision using CalibSun’s customized on-site sensor network with INSTANT.
Our unique nowcasting tool INSTANT detects and anticipates the impact of cloud shadows on solar energy production.
- Minimize forecast deviation penalties even in the most challenging climates
- Maximize financial gains
- Optimize PV storage and hybridization management
Forecast

NEXT - Intraday and day-ahead irradiance and production forecasts
Increase forecast accuracy by up to 46% by utilizing data from your photovoltaic power plant, combined with weather models and satellite images with NEXT.
Get deterministic forecasts (P50) and probabilistic production scenarios (P90-P05) tailored to your needs: production, trading, energy aggregation...
- Integrate easily into EMS, PMS, monitoring and trading solutions
- Maximize your revenues and improve your operational decision-making
- Optimize your power trading and storage strategy
Solar resource assessment

FUTURE - Solar resource assessment with minimized uncertainty
Reduce uncertainty and optimize your project financing with one year of on-site measurements with FUTURE.
Forecast the long-term performance of a future PV plant with data-driven insights into expected output over the solar plant’s lifecycle.
- Improve your financing terms & asset valuation
- Reduce the need for equity investment
- Improve operating and storage profitability
Forecast empowered by on-site data
At CalibSun, we are a team of passionate, driven, and highly skilled experts dedicated to helping PV players stay ahead of the competition in the fast-evolving world of renewable energy.
Hands-On PV Experience
CalibSun is a spin-off of Solais, a solar engineering consultancy with over 15 years of expertise in the photovoltaic sector, which equips us with invaluable hands-on knowledge about PV financing, development, and operations.
TEAM OF EXPERTS
Our team of experts, based in France, includes mainly talented data scientists specialized in solar energy, meteorological data and satellite image processing.
Scientific background
Our solutions are backed by Europe’s top meteorologists and solar resource experts, thanks to our close collaboration with Mines Paris, one of France’s leading engineering schools.
ON-SITE DATA FOCUSED
Our forecasting solutions are built around on-site data from your PV plant because nothing improves forecast accuracy more than integrating real-time, local measurements into our algorithms.
Hands-On PV Experience
CalibSun is a spin-off of Solais, a solar engineering consultancy with over 15 years of expertise in the photovoltaic sector, which equips us with invaluable hands-on knowledge about PV financing, development, and operations.
TEAM OF EXPERTS
Our team of experts, based in France, includes mainly talented data scientists specialized in solar energy, meteorological data and satellite image processing.
Scientific background
Our solutions are backed by Europe’s top meteorologists and solar resource experts, thanks to our close collaboration with Mines Paris, one of France’s leading engineering schools.
ON-SITE DATA FOCUSED
Our forecasting solutions are built around on-site data from your PV plant because nothing improves forecast accuracy more than integrating real-time, local measurements into our algorithms.
Our partners



Our clients





15
years of expertise in photovoltaics
15
scientific publications
+20
combined data sources
FAQ
Learn more about NEXT and solar forecasting.
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Learn more about NEXT and solar forecasting.
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