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Solar payback calculator

Your roof. Your money.

Enter a postal code and a system size. Hourly NLR PVWatts production at that address, priced against the serving utility’s EIA residential average and its rule for exported solar. No sign-up.

01Site and system

Type a city, a postal code, or coordinates such as 64.15 N, 21.94 W; then choose a match.

DC
kWdc
BEFORE INCENTIVES
$/W

LBNL: 2024 median $4.0/W (cash purchases $3.5/W).

kWh/yr

Defaults to what the array makes in a year (a 100% offset home). Enter the kWh from your bills.

Note:
Enter a postal code to see payback and the 25-year cash flow. Production works worldwide; the rate dataset covers the US.

COMPUTED, NOT QUOTED