Solar World Solar Radiation API

Use our map demo to instantly retrieve live and forecast solar irradiance data from around the world!

Fast, easy, free to try - It’s our World Solar Radiation API

Simply drop a pin anywhere in the world, and instantly retrieve the latest solar irradiance forecast and real-time (‘live’) data for that location. This free tool is powered by our World Solar Radiation API, which delivers solar irradiance live (now through the past 7 days) and forecast (from +30 minutes to 7 days ahead) data, globally. For full access to this data, use our API Toolkit!.

Our forecasting data are utilised by more than 7,000 unique users. We also feature a global network of high-profile partnerships to deliver 24/7 support and bespoke contracts

Solcast API Toolkit

Access real-time and forecast solar irradiance data within minutes by creating your free API Toolkit account.

Download solar radiation data from just moments ago, reaching back 7 days in the past in CSV, JSON or XML format for your areas of interest. No credit card required. No commitment to buy. Just instant access.

We crunch gigabytes of satellite data on the fly in just seconds to deliver you the latest solar irradiance data

We built an entirely new approach to solar irradiance modelling using the latest in high-resolution weather satellites, machine learning, computer vision and big data. We crunch nearly 10TB of input data every month in a cloud-based environment on AWS and provide real-time access to our data via API. Our Live and Forecast solar irradiance data products include:

  • Solar irradiance data (GHI, DNI, Diffuse)
  • Forecasts from 5 minutes through 7 days ahead
  • Available from real-time through 7 days ago
  • Global coverage (all six major continents)
  • Rapid update (new irradiance data every 5-15 minutes)
  • Exceptionally low latency (tens of seconds for computation)
  • Proprietary cloud & aerosol detection (tracking smoke, dust, haze)
  • High-resolution data (1-2km)
  • Choose between 5/10/15/30 minute resolution
  • Delivered via REST API (download CSV, JSON or XML)
  • Historical datasets available for up to 20 years
Solcast API Toolkit

Access real-time solar irradiance data in our API Toolkit

Learn about our technology

Live & forecast data APIs for data access Pricing information Methodology

Or, access solar irradiance data at your areas of interest straight away

Create your free API Toolkit account, and we will provide you with 1000 free API calls, plus an additional 10 free calls per day for each real-time solar radiation site you create. No commitment required, just instant access to the latest high quality solar irradiance data, wherever you need it.