Need solar data or forecasts? We’ve got the world covered

Solar resource assessment and forecasting data for irradiance and PV power. Created using a global fleet of weather satellites. Independently validated. Free to try. Access our data in just a few minutes with the Solcast API Toolkit.

Solar data services… in the cloud

We built a new approach to solar forecasting and modeling technology from the ground up, using the latest in weather satellite imagery, machine learning, computer vision and big databases. We crunch more than 600 million new forecasts every hour in a cloud-based environment on AWS and provide real-time access to our data via API. Use the API Toolkit to access nearly 20 years of historical data, including TMY files.

Historical and TMY Data

  • Low uncertainty, zero bias, bankable dataset
  • Independent validation & global coverage
  • High resolution 2km data at 5minute resolution
  • PV modelling software integration (PVSyst, SAM, TMY3, CSV)
  • Solar irradiance (GHI, DNI, DHI)
  • Weather (Temp, Wind, Humidity, Snow, etc)
  • Includes aerosol impacts (tracking of smoke, dust, haze)

Live and Forecast Data

  • Solar irradiance data (GHI, DNI, Diffuse)
  • Weather (Temp, Wind, Humidity, Snow, etc)
  • PV power modelling (Rooftop or Utility Scale)
  • Global coverage (all six major continents) at 2km resolution
  • Rapid update (new forecasting data every 5-15 minutes)
  • Proprietary cloud & aerosol detection (tracking smoke, dust, haze)
  • Probabilistic forecasting outputs
  • Real-time data through to 14 days ahead at 5, 10, 15, 30 & 60 minute resolution
  • Delivered via REST API (download CSV or JSON)

Try it for free, no credit card required.

Learn more about our data

Latest Posts

When is the next Aurora due and what's the impact on solar generation?
Ever wondered how the solar storms that create the Aurora Borealis impact PV generation? Check out how extra-terrestrial irradiance changes solar power during solar flares in our latest insights report.
Big accuracy gains for Europe
Solcast forecast improvement is already live for solar operators! Check out how Solcast achieved a relative ~10% error improvement with the integration of high-resolution ICON-EU weather model.
Eclipse and weather impacts on solar generation across the US
Check out the unique view of the eclipse showing the live actuals for the eclipse path and weather impacts on irradiance. The effects on solar generation across American assets and grids were analysed using the Solcast API.