Free, browser-based PV performance calculators for solar engineers. CUF, PR, soiling loss, Grid loss, Grid Availability, and more. All calculations run locally—no data leaves your device.
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Updated
May 17, 2026
Free, browser-based PV performance calculators for solar engineers. CUF, PR, soiling loss, Grid loss, Grid Availability, and more. All calculations run locally—no data leaves your device.
Townsend snow loss (via pvlib) + precipitation-aware soiling model using monthly climate inputs (manual-clean option); month-by-month results to support EPC yield estimates and O&M cleaning plans.
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