Free Tool

PV Degradation Projector

Project your solar panel energy output over 25 years, accounting for panel degradation. See how panel quality affects long-term production and revenue.

Configure Your System

Average for your area. Leave blank for 5.0 hrs default.

$

Default: $0.1844/kWh (US average)

Enter your system size and panel tier above to see your 25-year solar output projection.

Estimates use a 0.77 system loss factor and assume linear degradation. Actual output varies by location, weather, shading, and installation quality.

Written & reviewed by

Jeremy Wolfe — Senior Solar Energy Analyst

Jeremy Wolfe is a solar energy analyst specializing in residential photovoltaic economics, federal and state incentive policy, and return-on-investment modeling for homeowners. He leads EnergyTools' solar research program and methodology.

  • 10+ years analyzing residential solar economics and payback modeling
  • Lead researcher for EnergyTools' 50-state solar cost-per-watt database
  • Author of 100+ solar ROI, payback, and incentive analyses

Methodology & data sources:NREL PVWatts, EPA FuelEconomy.gov, state utility commissions— updated 2026.