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.
You're in good company
Solcast's "Estimated Actuals" closes the gap for our owned and third-party solar portfolios.
Accurate real-time and forecasted weather data is crucial for assessing plant performance and maximizing the value of clean energy assets.
As far as we know, there's no provider that can provide a more accurate forecast.
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 data and PV power data is updated every 5 to 15 minutes, downscaled to 90 metre resolution. Aerosol and albedo effects are explicitly treated.
Integrate
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.
Data Access
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).
Validation
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.
TMY Data Specifications
Geographic coverage | Global (note: far ocean and polar regions are coarser resolution) |
Temporal coverage | 15, 20,30 or 60 minutes (period-mean values) |
Spatial resolution | 90 meters (irradiance, PV power, snow soiling, cloud parameters, and other parameters across all regions) |
Pxx (Probability of exceedance) | P50, P75, P90, P95 |
Data parameters | The following data parameters are available.
^ Clear-sky scenarios also available for these parameters |
Data access | API or Web download |
Download wait time | No wait time |
Data formats | CSV, JSON, PVsyst, SAM, TMY3 |
Time zone | UTC (default for Solcast), longitudinal (default for SAM, PVsyst, TMY), or user-set |
Historic Data Products
Time Series
The complete suite of irradiance and weather data required for effective monitoring, operation, and forecasting at your large-scale solar farm.
Typical Meteorological Year (TMY)
The complete suite of irradiance and weather data required for effective monitoring, operation, and forecasting at your large-scale solar farm
