Modelling global cloud cover on a 2km2 scale using Solcast's industry leading radiation model.
High resolution and low uncertainty historical Time Series and TMY data for energy simulations and bankable solar resource assessments. Ready to integrate via API.
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Detailed global satellite observations that capture cloud cover with precision
We model local cloud cover using a 2km2 grid, downscaled to 150m2 using a terrain grid, to render a precise and accurate global snapshot of historic solar irradiance.
Dataset supported by independent global validation
The data has low uncertainty and a quantified error range, making the data suitable for resource assessment, yield analysis, financial modelling, and any application requiring precision irradiance data.
Access via API or Solcast web Toolkit
Ready to integrate directly into your systems via json or csv. API uptime of 99.9% with very low latency.
Bulk extract data using the Solcast API Toolkit.
Direct integration with major PV simulation software
Full suite of weather data from leading reanalysis datasets completes the collection of 20+ parameters available.
Data coverage from 2007 to 7 days ago, from hourly to 5 minute resolution.
Data available in formats ready to import into PVsyst, SAM, PV*Sol, PlantPredict, Helioscope, + more.
Historic Data Products
Typical Meteorological Year (TMY)
The Solcast API Toolkit
Solcast takes on the many challenges of producing live and forecast solar data, so that you don’t have to. And that means making the data as easy to access, validate and integrate as possible, which is made possible through our API Toolkit. We provide instant access to live and forecast data products via this web interface, which is free to try. These include direct estimates of global, direct and diffuse solar radiation, as well as PV power output.