Solar World PV Power API

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

Free solar energy forecasting!

Simply drop a pin anywhere in the world and enter your PV system details. In return, you’ll instantly retrieve the latest solar irradiance forecast and real-time (‘live’) data for that location. This free tool is powered by our World PV Power API, which delivers solar PV power estimates 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 24,000+ unique users. We also feature a global network of high-profile partnerships to deliver 24/7 support and bespoke contracts

Global Enterprise Partnerships

North America, China, Vietnam




South America




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Solcast API Toolkit

Try our solar forecasting data within minutes

Try our solar irradiance and PV forecasting data though the Solcast API Toolkit. No credit card required. Instant access.

Solar forecasting technology… in the cloud

We built a new approach to solar forecasting 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, including:

  • Solar irradiance data (GHI, DNI, Diffuse)
  • PV power modelling (Rooftop or Utility Scale)
  • Global coverage (all six major continents)
  • Rapid update (new forecasting data every 5-15 minutes)
  • Proprietary cloud & aerosol detection (tracking smoke, dust, haze)
  • Probabilistic forecasting data (P50, P10, P90)
  • High-resolution data (1-2km)
  • Forecasts from 5 minutes through 7 days ahead
  • Choose between 5/10/15/30 minute resolution
  • Delivered via REST API (download CSV, JSON or XML)
Solcast API Toolkit

Access real-time solar irradiance data in our API Toolkit

Learn about our technology

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

Create your free API Toolkit account, and we will provide you with 10 free requests 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.