Home Solar Panel Snow Loss Calculator
Snow cover can silently cut into your solar panel's output for weeks at a time. Enter your system size and local snow conditions to estimate the yearly energy and dollar loss from snow coverage.
About this calculator
Estimate how much annual solar energy production you lose to snow cover based on your climate zone, panel tilt, and typical snow season length.
Frequently Asked Questions
How does panel tilt affect snow loss?
Steeper tilt angles help snow slide off panels faster, reducing the number of effective snow-covered production hours. This calculator applies a simplified tilt factor to approximate that effect.
Is this an exact prediction?
No, actual snow loss depends on snow density, panel surface temperature, wind, and sun angle. This tool gives a reasonable planning estimate.
Can inverters or microinverters reduce snow-related losses?
Panel-level optimizers can help minimize losses from partial shading or snow on some panels, but total coverage still eliminates production from affected panels.