Historical Data Validation

At Clean Power Research®, we believe that accurate, bankable data is critical renewable energy development and achieving a clean-powered planet. The SolarAnywhere® team takes great care to ensure that each data version update improves our data sources, irradiance model and calibrations. As SolarAnywhere is widely used for independent and bankable solar resource assessment, operational monitoring and forecasting, we endeavor to ensure our customers and partners have full confidence in this as well.

The SolarAnywhere V4.0 validation paper provides reference statistics for SolarAnywhere datasets published April 2025 alongside the release of SolarAnywhere V4.0 and covers a maximum date range of 1998 through 2024, depending on the region. We find these metrics to be a transparent assessment of our irradiance values against a set of global reference sites.

For more information, read the public validation report, request a copy of the full validation report or visit the support center for additional technical details on V4.0 features and enhancements.