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.

Trusted in 24x7 operations by 30,000+ users worldwide, including these brands.

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 and Monthly Averages 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)

Solar data services in support of every solar mission

We're dedicated to helping you get the job done. Learn more about our offerings and technology by selecting the most relevant topic area for you.

Latest Posts

Upgraded Solcast API contains 30+ parameters, including GTI

The upgraded version of the Solcast API, only available for now via contacting sales@solcast.com.au, contains a hugely-expanded set of 30+ data parameters!

Solcast API upgraded with realistic 5-minute data

Actually, it's 5-minute #solar data from the Solcast API, made by tracking cloud movements minute-by-minute, globally!

Huge improvement in day-ahead solar irradiance and power forecasts goes live

Solcast day-ahead irradiance and power forecasts are now improved by 15% to 35%