A collation of historical weather data derived from a multi-year time series selected to present the unique weather phenomena with annual averages that are consistent with long term averages.
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Cloud and Irradiance tracking
Tracking the world's clouds in the finest detail
Designed for Solar, from the ground up. Never rely on generic weather model data again. Solcast's real time and forecast data tracks and forecasts real clouds at a resolution of 1-2km and 5 minutes. Our irradiance and PV power data is updated every 5 to 15 minutes. Aerosol and albedo effects are explicitly treated.
Integrate directly with your PV software, or upload with multiple file format options
Solcast data is available directly in PVSyst, SAM, PlantPredict and PV*Sol. Support for other softwares via industry standard data formats.
Multiple probabilistic scenarios available for due diligence and solar resource assessment
Direct API download for TMY P50 data. TMY PXX scenarios (P75, P90, P95) downloads through the Solcast API Toolkit. Multiple file types supported (CSV, PVsyst, TMY3, SAM).
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.
2 requests per month free.
Paid plans from $49/month.
Includes 10 requests /month
Includes 80 requests /month
Includes 450 requests /month
Each request includes 1 TMY file at 1 location
TMY Data Specifications
Global, except for ocean and polar regions.
2007 to 2018
60 minutes (period-mean values)
2km (irradiance and cloud parameters, over all non-polar continental areas and nearby islands)
|Pxx (Probability of exceedance)||P50, P75, P90, P95|
The following data parameters are available.
Via the Solcast Web Toolkit & Solcast API
|Download wait time|
Web Toolkit: typically 5 minutes
Solcast standard, PVsyst, SAM, TMY3
UTC (default for Solcast), longitudinal (default for SAM, PVsyst, TMY), or user-set