Designed to provide high volumes of solar resource data quickly and effectively at a competitive price. Prospect for solar sites establish feasibility, or get a second opinion.
Trusted in 24x7 operations by 30,000+ users worldwide, including these brands.
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 with your PV design workflow
Multiple file formats supports included CSV and JSON. Includes up to five API calls a month and several unmetered locations for developing your integration. Direct downloads through the API Toolkit available.
Quickly access key irradiance and weather data via API
Provides GHI, DNI, DHI, GTI, Temperature, and wind speed. Global tilted irradiance for fixed and single access tracking systems supported.
Dataset supported by independent global validation
Monthly and annual average data has low uncertainty and a quantified error range, making the data suitable for resource assessment, yield analysis, financial modelling, and any application requiring climatological irradiance data.
5 requests per month free.
Paid plans from $49/month.
Includes 20 requests /month
Includes 1000 requests /month
Includes 5000 requests /month
Each request includes 12 monthly average and annual value at 1 location
Monthly Averages Data Specifications
Global, except for ocean and polar regions.
2007 to 2018
Average daily value per month, average monthly value, and average annual value
2km (irradiance and cloud parameters, over all non-polar continental areas and nearby islands)
|Pxx (Probability of exceedance) options|
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