Solar Panels in Port Washington, WI: Cost, Payback & Savings
A typical 6.4 kW home solar system in Port Washington costs about $24,960 and pays for itself in about 14.4 years, saving roughly $23,610 over 25 years at Wisconsin's average electricity price of 19.0¢/kWh.
Monthly solar production in Port Washington
Estimated output of a 6.4 kW south-facing roof system. Jul is the strongest month (979 kWh); Dec the weakest (307 kWh).
Solar production (kWh) Typical home use, 645 kWh/month
Solar payback calculator for Port Washington
Pre-filled with Port Washington's sunshine and Wisconsin's average electricity price. Enter your own bill and an installer's price per watt to see your payback.
Leave export credit blank where the utility offers full net metering. Where exports earn less, solar used at home as it's produced is worth the full price and the rest earns the export credit.
How Port Washington compares
- Each kW of panels here produces about 1,249 kWh a year — 6% less than the Wisconsin median and 9% less than the US median city (1,371 kWh).
- Payback ranks #95 of 96 Wisconsin places we cover.
- Sunshine varies little across a state; electricity price, installed cost and how utilities credit exported power drive most of the difference between states.
Net metering, tax credits and incentives in 2026
Wisconsin offers net metering: power you send to the grid is credited at or near the retail price, so every solar kWh is valued at 19.0¢ here.
There is no federal tax credit for buying home solar installed in 2026. The 30% Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, so the costs and paybacks on this page include no federal credit.
Wisconsin and local utilities may still offer rebates, performance payments, property-tax or sales-tax exemptions. Search the DSIRE incentives database for Wisconsin and ask installers which programs they apply for you.
Frequently asked questions
Is solar worth it in Port Washington, WI?
For a typical home, a solar system pays for itself in about 14.4 years and then keeps saving money. Over 25 years the estimated net savings are $23,610. Verdict: slow payback. Your own payback depends on your roof, your bill and the quotes you get.
How many solar panels do I need in Port Washington, WI?
A home using 645 kWh a month (the Wisconsin average) needs about 16 panels of 400 W — a 6.4 kW system — to cover its annual use. Divide your own yearly kWh by 1,249 to get the kW you need.
How much do solar panels cost in Port Washington, WI?
At 3.90 dollars per watt, a 6.4 kW system costs about $24,960 before any state or utility incentives. There is no federal tax credit for systems installed in 2026.
How much sun does Port Washington get?
Port Washington averages 4.3 peak sun hours per day, so each kilowatt of panels produces about 1,249 kWh a year.
Does Wisconsin have net metering?
Yes. Power sent back to the grid is credited at or near the retail price (19.0¢ per kWh on average).
How much does electricity cost in Wisconsin?
Residential electricity in Wisconsin averages 19.0¢ per kWh, and a typical home uses 645 kWh a month (EIA).
Solar payback in nearby places
- Grafton13.8 yrs
- Cedarburg13.9 yrs
- Mequon13.7 yrs
- West Bend13.7 yrs
- Brown Deer13.6 yrs
- Germantown13.6 yrs
- Glendale13.6 yrs
- Richfield13.5 yrs