Data and tools to build the solar future

Solar forecasting and actuals data for irradiance and PV power data, globally, using satellite 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?

Solcast’s Dr Nick Engerer explains our vision for a solar future.


  • Photograph of Aaron P..

    Aaron P.

    Battery Optimisation

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

  • Photograph of Eclipse Solar Car Team.

    Eclipse Solar Car Team

    Solar Car Competition

    During competition, we had to compute how much energy we could afford to spend on the road and how much we could recharge at the end of the day. Solcast solar irradiance forecasts allowed us to adjust our daily strategy with great precision