CalibSun delivers best-in-class solar irradiance and power production forecasts to help solar producers, traders and aggregators boost trading profits and cut imbalance costs.

CalibSun provides a solar forecasting suite integrating on-site data, covering all operational time horizons. INSTANT delivers 1-minute nowcasts using a network of sky imagers and on-site sensors, while NEXT produces deterministic and probabilistic intraday and day-ahead forecasts by combining real-time on-site data with NWP models and satellite imagery. They were ranked #1 in three independent 2025 benchmarks across 1.5GW of European and Asian PV assets.