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 data: Up to 5 minute / 90 metre 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)
  • Fully-global coverage
  • 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.

Latest Posts

Cloud cover vs Cloud opacity: Which should you use for solar forecasting?

Understand how cloud cover and cloud opacity impact surface irradiance. Learn which metric is more applicable for solar energy applications.

Read Post

Storm Boris delivers record rain and early snows across Europe

Storm Boris brought severe flooding with record-breaking rainfall across Central Europe, while the UK and Alpine regions saw their first snowfalls of the season.

Read Post

Typhoon Yagi triggers significant drop in solar production across Southeast Asia

Discover how Typhoon Yagi, a Category 5 storm, caused unprecedented drops in solar production across Southeast Asia, impacting cities like Hanoi, Shenzhen, and Manila.

Read Post