Michigan solar leads

How much sun Detroit gets

Detroit is the largest city in Michigan in the Census Bureau’s July 1, 2025 estimates. For Detroit, the PVWatts calculator (developed by NREL, now hosted by the National Laboratory of the Rockies) gives an average of 4.45 kWh per square meter per day reaching a modeled array (checked October 9, 2026).

The method is the same across states: PVWatts version 8 with its default array, fixed on an open rack at a 20-degree tilt facing due south, at the city’s Census gazetteer coordinates and with National Solar Radiation Database typical-year weather. Grand Rapids, Traverse City and the Upper Peninsula will each read differently, and real roofs vary with pitch, direction and shade; treat the value as a way to compare states, not as what any home will produce.

Distributed generation and net metering in Michigan

Michigan replaced classic net metering with a distributed generation program, run through each utility’s tariff under the Public Service Commission. The MPSC’s distributed generation page (checked October 9, 2026) explains that 2023 Public Act 235 required utilities to update their tariffs: eligible projects may now be up to 550 kW, and a customer may build generation of up to 110% of its electricity use over the previous 12 months. After the Commission’s July 23, 2024 order in case U-21767, each utility filed an updated tariff, and all of them were approved on March 13, 2025.

The detailed rules are the Commission’s Interconnection and Distributed Generation Standards, Mich. Admin. Code R 460.901a through R 460.1026, effective April 25, 2023 (as of October 9, 2026). They sort projects by size. Level 1 is a certified project of 20 kWac or less, the size of nearly every home system; Level 2 runs above 20 kWac up to 150 kWac; Level 3 covers non-certified projects up to 150 kWac and any project above 150 kWac up to 550 kWac. Under R 460.926, distributed generation program application fees combined with fast track review fees may not exceed a total of $50 (as of October 9, 2026).

Customers who joined a legacy net metering program before their utility’s first distributed generation tariff may stay on it for up to 10 years from initial enrollment under R 460.1026, but lose that option if they increase the system’s nameplate rating. For a buyer, that matters when a homeowner with an older system asks about adding panels.

Michigan’s detached, owner-occupied housing

Michigan is one of the most detached-house states in the country. The Census Bureau’s table B25024 for 2020-2024 counts 3,327,693 single-family detached homes among 4,622,236 housing units: 72.0%, the fifth highest share of the 50 states. Owners hold most of them; table B25032 shows 2,633,444 owner-occupied detached homes, 88.2% of the state’s 2,984,190 owner-occupied homes.

Renters occupy 1,092,179 of Michigan’s 4,076,369 occupied homes, about 26.8%, in the 2020-2024 table B25003. A smaller renter share than in many states leaves more households for which a homeowner filterFilterA rule that decides which leads a buyer is offered, based on fields such as vertical, sub-type, state, ZIP code, homeownership or accident details. Glossary does not narrow the field much.

Housing age and home values are on Michigan window replacement leads, and heating fuel and degree days are on Michigan HVAC leads.

Turning the Michigan facts into a solar plan

Three things a buyer can take from the Michigan data when deciding how to cover the state:

• Home systems are Level 1. The MPSC standards put certified projects of 20 kWac or less in Level 1 (as of October 9, 2026), so residential installs follow the simplest interconnection path.
• The sizing rule is tied to use. Under 2023 PA 235, as the MPSC describes it, a customer’s system may be sized up to 110% of the past 12 months of use (checked October 9, 2026), so installers ask for usage history early.
• Metro Detroit dominates the housing. The three Detroit-area counties account for 965,346 owner-occupied detached homes in the 2020-2024 ACS, and Detroit licenses its own electricians, so coverage there is often planned on its own.

These points are about Michigan’s rules, housing and installed solar. They say nothing about how many leads there are, their price or where they come from.

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