Wisconsin solar leads
Wisconsin’s small-scale solar rose 16.6% in the year to July 2026, to 329.3 MW in the EIA’s Table 6.2.B, and 88.7% of its owner-occupied homes are detached houses. Summit Leads supplies solar leads in Wisconsin by real-time ping/post, with filters and routing agreed during onboarding.
Summit Leads sells solar leads by real-time ping/post. Filters and routing are agreed during onboarding.
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Wisconsin facts for solar lead buyers
| Fact | Value Source |
|---|---|
| Small-scale solar PV capacity, July 2026 | 329.3 MW (EIA estimate, July 2026), 31st of the 49 states with an EIA estimateElectric Power Monthly, Table 6.2.B: Net Summer Capacity Using Primarily Renewable Energy Sources and by State U.S. Energy Information Administration |
| Small-scale solar PV capacity, July 2025 | 282.4 MW (EIA estimate, July 2025), so 46.9 MW or 16.6% was added in the twelve months to July 2026Electric Power Monthly, Table 6.2.B: Net Summer Capacity Using Primarily Renewable Energy Sources and by State U.S. Energy Information Administration |
| Solar resource in Milwaukee, the largest city | 4.57 kWh per square meter per day on a fixed, south-facing array tilted 20 degrees (PVWatts version 8, typical-year data, checked October 9, 2026)PVWatts Calculator (version 8): Milwaukee, Wisconsin National Laboratory of the Rockies (formerly NREL) |
| Average residential electricity price, 2024 | 17.18 cents per kWh (2023: 16.88 cents; EIA Form EIA-861 data, 2024), the 15th highest of the 50 statesElectric Power Annual, Table 2.10: Average Price of Electricity to Ultimate Customers by End-Use Sector, by State U.S. Energy Information Administration |
| Single-family detached share of housing units | 66.2% (1,839,569 of 2,778,572 housing units; ACS 5-year 2020-2024, table B25024)Table B25024, Units in Structure: Wisconsin (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Owner-occupied single-family detached homes | 1,491,620, or 88.7% of 1,682,214 owner-occupied homes (ACS 5-year 2020-2024, table B25032)Table B25032, Tenure by Units in Structure: Wisconsin (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Two-unit buildings as a share of housing units | 5.9% (162,913 of 2,778,572 housing units; ACS 5-year 2020-2024, table B25024), the sixth highest of the 50 statesTable B25024, Units in Structure: Wisconsin (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Owner-occupied homes in two-unit buildings | 32,184, or 1.9% of owner-occupied homes (ACS 5-year 2020-2024, table B25032)Table B25032, Tenure by Units in Structure: Wisconsin (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Mobile home share of housing units | 3.1% (84,807 of 2,778,572 housing units; ACS 5-year 2020-2024, table B25024)Table B25024, Units in Structure: Wisconsin (ACS 5-Year 2020-2024) U.S. Census Bureau |
| County with the most owner-occupied detached homes | Milwaukee County: 157,562, or 80.5% of 195,766 owner-occupied homes (ACS 5-year 2020-2024)Table B25032, Tenure by Units in Structure: Wisconsin counties (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Highest detached share of owner homes among the ten largest counties | Marathon County: 94.6% of 42,414 owner-occupied homes (ACS 5-year 2020-2024)Table B25032, Tenure by Units in Structure: Wisconsin counties (ACS 5-Year 2020-2024) U.S. Census Bureau |
| Owner-occupied detached homes in Dane County | 119,586, or 83.2% of 143,682 owner-occupied homes, second among Wisconsin counties (ACS 5-year 2020-2024)Table B25032, Tenure by Units in Structure: Wisconsin counties (ACS 5-Year 2020-2024) U.S. Census Bureau |
Last reviewed: October 9, 2026. A summary for education, not legal advice.
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Small-scale solar growth in Wisconsin
Wisconsin starts from a modest base but grew quickly in the latest year. The EIA’s monthly estimate of solar systems under 1 MW installed behind customer meters, published in Electric Power Monthly Table 6.2.B, rose from 282.4 MW in July 2025 to 329.3 MW in July 2026. The gain of 46.9 MW is 16.6% in twelve months; by total capacity Wisconsin ranks 31st of the 49 states the EIA estimates.
| Month | Capacity (MW) | Source |
|---|---|---|
| July 2025 | 282.4 | EIA EPM Table 6.2.B, July 2025 |
| July 2026 | 329.3 | EIA EPM Table 6.2.B, July 2026 |
The numbers measure installed capacity, not homeowner interest. For a buyer they show a smaller installed base than in the large solar states, which means most Wisconsin homes still have no system, and a growth rate that kept installers busy in the most recent year.
Measuring Wisconsin sunlight at Milwaukee
The reference city for Wisconsin is Milwaukee, the largest in the state with 562,407 residents in the Census Bureau’s city population estimates for July 1, 2025, well ahead of Madison, the second largest city, at 286,233. The PVWatts Calculator, an NREL model that the National Laboratory of the Rockies now maintains, estimates 4.57 kWh per square meter per day of solar radiation on a standard array there (checked October 9, 2026).
Behind the figure: PVWatts version 8 defaults, meaning a fixed array on an open rack, facing south and tilted 20 degrees, placed at Milwaukee’s Census gazetteer point and modeled with typical-year weather from the National Solar Radiation Database. Madison, Green Bay or a steeper roof would come out differently; the value is for comparing states on one basis.
Wisconsin residential electricity price
Wisconsin’s residential average sits in the upper third of the states in the EIA’s annual table, 15th highest of the 50 in 2024. The two latest years are given here as sourced data only, with no conclusion drawn about what a solar system would mean for any household’s bill.
| Year | Cents per kWh | Source |
|---|---|---|
| 2023 | 16.88 | EIA Electric Power Annual, Table 2.10 |
| 2024 | 17.18 | EIA Electric Power Annual, Table 2.10 |
Wisconsin houses, duplexes and owners
Two-unit buildings are a Wisconsin feature. In the Census Bureau’s table B25024 for 2020-2024, 162,913 of the state’s 2,778,572 housing units are in two-unit buildings, 5.9%, the sixth highest share of the 50 states. Single-family detached houses make up 1,839,569 units (66.2%), and mobile homes 84,807 (3.1%).
Few of those units are owner-occupied. Of 1,682,214 owner-occupied homes in table B25032 (2020-2024), 32,184 (1.9%) are in two-unit buildings, while 1,491,620 (88.7%) are detached houses and 49,748 (3.0%) are mobile homes. Owner-occupied homes are therefore even more concentrated in detached houses than the housing stock as a whole.
Housing age and home values are on Wisconsin window replacement leads, and heating fuels and degree days are on Wisconsin HVAC leads.
Wisconsin counties by owner-occupied detached homes
These are the ten Wisconsin counties with the most owner-occupied single-family detached homes, each with its owner-occupied homes and detached share, from the Census Bureau’s table B25032 at county level for 2020-2024. The figures describe housing and say nothing about where leads originate.
| County | Owner-occupied detached homes | Owner-occupied homes | Detached share of owner homes | Source |
|---|---|---|---|---|
| Milwaukee | 157,562 | 195,766 | 80.5% | ACS 2020-2024, B25032 (county) |
| Dane | 119,586 | 143,682 | 83.2% | ACS 2020-2024, B25032 (county) |
| Waukesha | 113,403 | 128,147 | 88.5% | ACS 2020-2024, B25032 (county) |
| Brown | 66,673 | 73,206 | 91.1% | ACS 2020-2024, B25032 (county) |
| Outagamie | 52,237 | 56,026 | 93.2% | ACS 2020-2024, B25032 (county) |
| Racine | 50,786 | 57,122 | 88.9% | ACS 2020-2024, B25032 (county) |
| Rock | 44,303 | 47,819 | 92.6% | ACS 2020-2024, B25032 (county) |
| Winnebago | 43,672 | 47,791 | 91.4% | ACS 2020-2024, B25032 (county) |
| Kenosha | 40,239 | 45,963 | 87.5% | ACS 2020-2024, B25032 (county) |
| Marathon | 40,137 | 42,414 | 94.6% | ACS 2020-2024, B25032 (county) |
Milwaukee and Dane counties lead by count but have the lowest detached shares of the ten (80.5% and 83.2%), while Marathon (94.6%) and Outagamie (93.2%) are almost entirely detached houses in the 2020-2024 county data. Waukesha County, third by count with 113,403, sits between the two groups at 88.5%.
Taken together, the ten counties hold 728,598 owner-occupied detached homes in the 2020-2024 ACS county estimates, just under half (48.8%) of the 1,491,620 statewide. The other half is spread across Wisconsin’s remaining counties, so a buyer whose installers travel beyond the metro areas covers a large share of the state’s detached homes. The four southeastern counties in the list (Milwaukee, Waukesha, Racine and Kenosha) account for 361,990 of the 728,598 on their own.
Planning Wisconsin solar coverage
The Wisconsin facts lead to three planning points for a solar buyer:
- Most homes have no system yet. At 329.3 MW in July 2026, the EIA’s small-scale estimate is far below the leading states, even after 16.6% growth, so first-time installations make up much of the work.
- Plan for duplexes in the cities. With 5.9% of housing units in two-unit buildings in the 2020-2024 ACS, a buyer can decide whether its installers take owner-occupied duplexes as well as single-family houses.
- Weigh county detached shares. In the 2020-2024 county data, Brown, Outagamie, Rock, Winnebago and Marathon counties run above 90% detached, while Milwaukee County is 80.5%.
These points describe housing and installed capacity. They are not estimates of how many Wisconsin homeowners are asking about solar.
Wisconsin solar buyer filters
A solar buyer usually sets filters on a handful of lead fields. For Wisconsin they relate to the facts above as follows:
- Homeowner status: the owner makes the decision; see the owner-occupied counts above.
- Project type: the solar work requested, in general terms; the option list is fixed when the solar form is final.
- Timeframe: a project in the coming months or early research.
- ZIP code: the area an installer covers, with the county table as a guide to the housing mix.
The filters for Wisconsin solar leads are agreed with each buyer during onboarding. Exclusive or shared routing for solar leads is agreed with each buyer during onboarding. The sample solar lead lists each field.
Where buyers filter in Wisconsin
Beyond Milwaukee and Madison, Wisconsin has several mid-sized metro areas where a solar crew might be based. The largest six by the Census Bureau’s July 1, 2025 population estimates are listed here. Each buyer’s coverage area is agreed during onboarding, inside these metro areas or outside them.
- Milwaukee-Waukesha: 1,575,010 (July 1, 2025 estimate)
- Madison: 709,685 (July 1, 2025 estimate)
- Green Bay: 336,756 (July 1, 2025 estimate)
- Appleton: 249,876 (July 1, 2025 estimate)
- Racine-Mount Pleasant: 198,919 (July 1, 2025 estimate)
- Eau Claire: 176,647 (July 1, 2025 estimate)
Source: Metropolitan and Micropolitan Statistical Area population estimates, Vintage 2025 (cbsa-est2025-alldata), U.S. Census Bureau.
Consent records for Wisconsin solar leads
Each Wisconsin solar lead carries the TCPATCPAThe Telephone Consumer Protection Act, the federal law that governs telemarketing calls and texts, autodialers, prerecorded voice messages and the Do Not Call Registry. Glossary consent record captured on the form. The state telemarketing laws table has a Wisconsin row on the state’s calling rules, and leads in Wisconsin brings together Summit’s other verticals in the state.
Wisconsin solar lead questions
How much did Wisconsin’s small-scale solar grow in the year to July 2026?
By 46.9 MW, or 16.6%, from 282.4 MW in July 2025 to 329.3 MW in July 2026, in the EIA’s Electric Power Monthly, Table 6.2.B.
How common are two-unit buildings in Wisconsin?
162,913 housing units, 5.9% of the total, are in two-unit buildings in the Census Bureau’s ACS 2020-2024 table B25024, the sixth highest share of the 50 states.
Which Wisconsin county among the largest ten is most heavily detached?
Marathon County, where 94.6% of 42,414 owner-occupied homes are single-family detached houses in the ACS 2020-2024 county data.
What did Wisconsin households pay per kWh in 2024?
An average of 17.18 cents per kWh, up from 16.88 cents in 2023, in the EIA’s Electric Power Annual, Table 2.10.
Could a buyer receive Wisconsin solar leads for part of the state only, by ZIP code?
Coverage and filters are agreed with each buyer during onboarding; email us the ZIP codes you want covered.
Request Wisconsin solar leads
Email us the Wisconsin ZIP codes you cover, your daily volume or caps and how you take delivery. ReturnReturnA buyer's request for credit on a lead that fails agreed standards, such as a disconnected number, a duplicate or a lead outside the filters. Glossary terms are agreed on the onboarding call, before you go live.
Start small, with no long-term commitment
- No long-term contract. Pause or stop at any time.
- No setup fee and no monthly fee. You pay only for leads delivered that match your filters.
- Start with a small test volume and scale when the numbers work.
- MVA and home improvement leads are exclusive by default: each lead is sold to one buyer.
- Return terms are agreed on the onboarding call, before you go live.
Or write to team@summitleads.ai. We reply by email.
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