Data and tools to build the solar future

Actual and forecast solar irradiance and power data, globally, using satellites and surface measurements.

Instant access to data anywhere

Historical, live and forecast.
Via CSV download and API
Updated every 10-15 minutes, using satellites and real PV data
Trusted by power and solar experts worldwide

Why solar forecasting?

Our CTO Nick Engerer answers some questions about our mission.

Testimonials

  • Photograph of Aaron P..

    Aaron P.

    Battery Optimisation

    Nice work on your forecasting algorithm, most impressed — much better than Darksky.

  • Photograph of Rob M..

    Rob M.

    PV production research and development

    I’ve been monitoring Solcast PV forecasts and estimated actuals against the measured actuals, and I’m very impressed with the accuracy.