Is Solar Worth It in Wisconsin in 2026?
Wisconsin is not the Sunbelt, and no honest guide should pretend otherwise. At 43.4°N, a Milwaukee-area system produces roughly 1,290 kWh per installed kilowatt per year — solid Upper Midwest production, but well below a Sunbelt state. What makes it interesting anyway is the electricity price behind it: Wisconsin pays some of the higher rates in the Midwest, and that rate has climbed 88 percent since 2005. Every rate hike shortens payback a little, even without much help from sunshine.
2026 changed the federal math everywhere. The 30 percent federal tax credit that used to trim thousands off a Wisconsin install ended for systems completed after December 31, 2025, and Wisconsin never had a state income-tax credit to fall back on. What's left is a sales-tax exemption, a property-tax exclusion, a capped Focus on Energy rebate, and whatever your utility pays for exported power — which varies more here than in most states. Solar can still work in Wisconsin, especially on a good roof paired with a favorable utility, but it takes real numbers, not a generic national payback quote.
Wisconsin Electricity Prices Keep Climbing
Solar is a bet on future electricity prices: every kilowatt-hour your roof makes is one you don't buy from the utility. Here's the long-run trend, from federal EIA data.
Full Wisconsin electricity price data (1990–2025)
| Year | Wisconsin (¢/kWh) | US avg (¢/kWh) |
|---|---|---|
| 1990 | 6.6 | 7.8 |
| 1991 | 6.7 | 8.0 |
| 1992 | 6.9 | 8.2 |
| 1993 | 7.0 | 8.3 |
| 1994 | 7.1 | 8.4 |
| 1995 | 7.0 | 8.4 |
| 1996 | 6.9 | 8.4 |
| 1997 | 6.9 | 8.4 |
| 1998 | 7.2 | 8.3 |
| 1999 | 7.3 | 8.2 |
| 2000 | 7.5 | 8.2 |
| 2001 | 7.9 | 8.6 |
| 2002 | 8.2 | 8.4 |
| 2003 | 8.7 | 8.7 |
| 2004 | 9.1 | 9.0 |
| 2005 | 9.7 | 9.5 |
| 2006 | 10.5 | 10.4 |
| 2007 | 10.9 | 10.7 |
| 2008 | 11.5 | 11.3 |
| 2009 | 11.9 | 11.5 |
| 2010 | 12.7 | 11.5 |
| 2011 | 13.0 | 11.7 |
| 2012 | 13.2 | 11.9 |
| 2013 | 13.6 | 12.1 |
| 2014 | 13.7 | 12.5 |
| 2015 | 14.1 | 12.7 |
| 2016 | 14.1 | 12.6 |
| 2017 | 14.4 | 12.9 |
| 2018 | 14.0 | 12.9 |
| 2019 | 14.2 | 13.0 |
| 2020 | 14.3 | 13.2 |
| 2021 | 14.5 | 13.7 |
| 2022 | 15.6 | 15.0 |
| 2023 | 16.9 | 16.0 |
| 2024 | 17.2 | 16.5 |
| 2025 * | 18.2 | 17.3 |
Source: US EIA, average residential retail electricity price. Values in cents per kWh. * 2025 is preliminary.
Wisconsin residential electricity ran about 18.2 cents per kWh in EIA's preliminary 2025 figures — up roughly 88 percent since 2005, with the last decade alone averaging about 2.6 percent a year. That's a notably higher starting rate than many sunnier states, which is part of why Wisconsin solar can still make sense despite modest production: you're offsetting an expensive kWh, not a cheap one. Nobody can guarantee that exact pace continues, but a grid facing rising fuel and infrastructure costs is not one that reliably gets cheaper.
The Wisconsin Sun, Month by Month
Panels care about sun angle and day length, not air temperature — cold, clear Wisconsin winter days are actually efficient for the panels themselves, even though the sun sits low and days are short. At 43.4°N, Wisconsin sees a wide seasonal swing: long, high-angle summer days that produce well, and short, low-angle winter days that produce far less.
Wisconsin monthly solar production data
| Month | kWh per installed kW |
|---|---|
| Jan | 75 |
| Feb | 87 |
| Mar | 122 |
| Apr | 123 |
| May | 131 |
| Jun | 129 |
| Jul | 134 |
| Aug | 130 |
| Sep | 116 |
| Oct | 101 |
| Nov | 80 |
| Dec | 63 |
| Year | 1290 |
Source: NREL PVWatts typical-year estimate (Milwaukee), per installed kW at latitude tilt.
Expect your system to do most of its annual work between April and September, with December and January well below average. A utility that banks annual credit (see below) lets that summer surplus carry you through the weak winter months; one that only nets monthly values a chunk of it at a much lower rate the moment it exceeds your usage in any given month.
What Solar Costs in Wisconsin in 2026
Most residential solar installs in Wisconsin run about $2.50 to $3.50 per watt, with $2.99 to $3.03/W commonly cited as the current average. The panels themselves are only a fraction of that; the rest covers the inverter, racking, labor, permitting, and overhead. With the federal credit gone, the number an installer quotes is very close to what you actually pay, before the Focus on Energy rebate.
| System Size | Typical 2026 Cost | Roughly Offsets | Fits |
|---|---|---|---|
| 5 kW | $12,500 to $17,500 | ~6,450 kWh/yr (~$98/mo at 18.2¢) | Smaller home, lower usage |
| 8 kW | $20,000 to $28,000 | ~10,300 kWh/yr (~$156/mo) | Average Wisconsin home |
| 12 kW | $30,000 to $42,000 | ~15,500 kWh/yr (~$235/mo) | Large home, electric heat or EV |
A typical full-size Wisconsin system lands closer to 13 kW, putting the all-in price around $32,500 to $45,500 before any rebate. Wisconsin's sales tax exemption saves several percent up front versus a state that taxes the equipment. Prices vary by roof complexity and local labor costs, so compare price-per-watt across at least three quotes.
Estimate Your Wisconsin Payback
The calculator below starts from Wisconsin's average rate and typical Milwaukee-area sun production. Enter your own monthly bill to see an estimated system size, payback period, and long-run savings. Wisconsin rates have climbed about 2.6 percent a year over the last decade — a reasonable default for the inflation assumption, and you can drag it to test a different future.
Wisconsin Solar Incentives That Still Exist in 2026
Separate what's gone from what survived.
- Gone — the 30 percent federal credit: Ended for installations completed after December 31, 2025, with no phase-out. If an installer's pitch still assumes it, walk away.
- Never existed — a state income-tax credit: Wisconsin has none. Don't let a quote imply otherwise.
- Still here — sales tax exemption: Under Wis. Stat. §77.54, solar (and wind) equipment capable of producing at least 200 watts AC is exempt from Wisconsin sales and use tax.
- Still here — property tax exclusion: Under Wis. Stat. §70.111(18), solar energy systems are fully exempt from property tax assessment — your home is worth more, but your bill doesn't reflect it. See our property taxes and home finances guide.
- Still here, capped and time-limited — Focus on Energy rebate: This ratepayer-funded program pays $600 per installed kW, capped at $2,400 per household, for systems of at least 0.5 kW oriented within 135° of due south, tilted 5-50°, under 15% shading, installed by a licensed contractor. For 2026, install between January 1 and June 30, and submit the rebate application within 60 days of completion — no later than August 31, 2026. A separate $600 rebate covers battery storage paired with solar.
- Partially — leases and PPAs: Third-party-owned systems can still capture a separate federal business credit through 2027, but it belongs to the leasing company, not you. Compare a lease against a cash or loan purchase before assuming it's the better deal.
Net Metering (Parallel Generation) in Wisconsin
Wisconsin has no single statewide net-metering statute. Each utility files its own tariff — officially Net Energy Metering or Parallel Generation — with the Public Service Commission, which monitors but doesn't standardize the terms. The common pattern: solar generation nets against usage monthly at the full retail rate. Utilities diverge sharply on what happens to credit left over at year-end, and that difference matters more than almost anything else on this page.
Xcel Energy (Northern States Power) does true annual 1-for-1 banking and cuts a check at retail for any excess over $2 — the "gold standard" among Wisconsin utilities. We Energies and Alliant Energy net monthly at retail but true up any remaining annual surplus at a much lower avoided-cost rate — roughly 4 cents per kWh versus We Energies' roughly 17.6-cent retail rate. Eligibility caps also differ: We Energies allows systems up to 300 kW, NSPW and Madison Gas & Electric cap at 100 kW, and WPL, WPS, and most others cap at 20 kW — residential systems rarely approach any of these.
This is a moving target: the PSC opened a statewide investigation in 2023 after Alliant Energy and Madison Gas & Electric rate cases proposed cutting these credits, which the PSC rejected. At its July 24, 2025 meeting, the Commission chose to skip a formal Value of Solar study and keep gathering data within the existing docket — no final change is ordered as of mid-2026, but a future rate case could still move the math. Two homes with identical roofs and usage can land on very different paybacks based on who bills them, so confirm your utility's true-up rate before you sign anything.
Roofs, Winters, and Solar
Wisconsin roofs deal with snow load, ice damming, and freeze-thaw cycles that shorten shingle life compared to milder climates. Panels shed snow reasonably well once they warm slightly above ambient, but a marginal roof underneath them is still a marginal roof.
Budget for snow shedding too: a steeper-pitched array clears snow faster. Ask your installer how your roof pitch affects both winter production and snow slide-off toward walkways below.
How to Go Solar in Wisconsin
Work through these steps in order before you commit.
- Pull your last 12 power bills and find your average monthly cost — at 18.2¢/kWh, even moderate usage adds up.
- Identify your utility (Xcel Energy, We Energies, Alliant Energy, or another) and ask how it handles annual net-metering true-up.
- Check that your roof faces within about 135° of due south, is tilted 5-50°, and has under 15% shading — the same thresholds Focus on Energy uses for its rebate.
- Confirm your roof has at least 15-18 years of life left, or plan to replace it first.
- Get at least three quotes and compare price per watt, equipment, and warranties — confirm none assumes the expired federal credit.
- If installing between January 1 and June 30, 2026, apply for the Focus on Energy rebate within 60 days of completion (no later than August 31) to lock in the $600/kW, up to $2,400.
- Weigh payback against how long you plan to stay. A 12-18 year payback is common here — if you might move sooner, treat solar as a resale upgrade rather than a guaranteed bill-cutter.
For the full picture of how panels work, sizing, and buying versus leasing, read our main solar panels guide. If your roof needs attention first, see our roofing guide, and for wiring and electrical capacity, see our electrical guide.
Sources
Figures on this page are 2026-current and pulled from primary sources. Rates: US EIA, Electric Sales, Revenue, and Average Price (2025 values preliminary). Production estimates: NREL PVWatts. Net metering and PSC investigation: Wisconsin PSC — Customer-Owned Generation and RENEW Wisconsin coverage of the PSC docket. Focus on Energy rebate: Focus on Energy — Solar for Homes. Sales tax exemption: Wis. Stat. §77.54. Property tax exemption: Wis. Stat. §70.111(18). Cost estimates: SolarReviews and EnergySage. We review these figures every six months.