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)
View pricing Solar API

Try it for free, no credit card required.

Learn more about our data

Historical and TMY Live and Forecast

Latest Posts

Getting the right data for Solar III: Snow Soiling
Learn how snow soiling impacts assets and grids, and how Solcast's models account for snow soiling levels in power modelling, grid aggregations and more.
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Getting the right data for Solar II: Tracking Aerosols at 90 metre resolution globally
Explore the critical role of aerosols in solar irradiance and how Solcast's aerosol modelling provides a more comprehensive irradiance data.
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Getting the right data for Solar I: Real 5-minute cloud tracking (past, present, forecast)
Discover how Solcast uses satellite imagery and weather forecasts to build 5 minute cloud tracking models and provide irradiance data for everywhere in the world.
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