Solar panels in Minnesota
Roofs across Minnesota get about 1,419 hours of usable sunlight a year, and electricity costs 14.8¢/kWh. That combination puts a typical system's payback at 11.4 years. Here's the detail, from real rooftop data across 14 Minnesota cities.
Check your own roof in Minnesota → These are regional figures; your roof's size, pitch and shading move them a lot.
How Minnesota compares
Minnesota gets more sunlight than 35% of the cities we measure, and its electricity costs more than 38% of states and provinces. Both matter, but not equally: the electricity rate usually matters more, because solar saves money by replacing power you would otherwise buy. A sunny state with cheap power often pays back slower than a cloudy state with expensive power. Why that happens →
Solar by city in Minnesota
| City | Sun hrs/yr | Panels | Net cost | Payback |
|---|---|---|---|---|
| Rochester | 1,522 | 21 | $16,758 | 10.5 yrs |
| Woodbury | 1,483 | 22 | $17,556 | 10.9 yrs |
| Brainerd | 1,461 | 22 | $17,556 | 11 yrs |
| Mankato | 1,461 | 22 | $17,556 | 11 yrs |
| Brooklyn Park | 1,455 | 22 | $17,556 | 11 yrs |
| St. Cloud | 1,426 | 23 | $18,354 | 11.4 yrs |
| Minneapolis | 1,419 | 23 | $18,354 | 11.4 yrs |
| Plymouth | 1,418 | 23 | $18,354 | 11.4 yrs |
| St. Paul | 1,415 | 23 | $18,354 | 11.4 yrs |
| Eagan | 1,415 | 23 | $18,354 | 11.4 yrs |
| Bloomington | 1,409 | 23 | $18,354 | 11.4 yrs |
| Bemidji | 1,351 | 24 | $19,152 | 11.9 yrs |
| Duluth | 1,349 | 24 | $19,152 | 11.9 yrs |
| International Falls | 1,290 | 25 | $19,950 | 12.4 yrs |
What a system costs in Minnesota
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 3,860 | $6,384 | $571 | 11.2 yrs |
| 12 panels | 4.8 kW | 5,790 | $9,576 | $857 | 11.2 yrs |
| 16 panels | 6.4 kW | 7,719 | $12,768 | $1,142 | 11.2 yrs |
| 20 panels | 8 kW | 9,649 | $15,960 | $1,428 | 11.2 yrs |
| 26 panels | 10.4 kW | 12,544 | $20,748 | $1,663 | 12.5 yrs |
Payback stops improving as systems grow, then gets worse. You can only save on electricity you were going to buy, so once a system covers your usage the extra panels mostly export at a lower rate.
Minnesota solar incentives
Every US household can claim the 30% federal residential clean energy credit, which is what the "after credit" figures above assume. On a $26,220 system that is $7,866 back. How the credit works →
State, utility and municipal incentives stack on top and change often — Minnesota may offer rebates, property or sales tax exemptions, or performance payments. We deliberately don't list specific state programmes here because they change several times a year and stale numbers are worse than none. The DSIRE database is the standard reference and is kept current.
Minnesota solar questions
Is solar worth it in Minnesota?
At 14.8¢/kWh and 1,419 usable sun hours, a typical Minnesota system pays back in about 11.4 years and returns roughly $21,880 across a 25-year panel life. That is slower than average, so compare at least three quotes before committing. Individual cities in Minnesota vary widely around this average.
How many solar panels do I need in Minnesota?
About 23 panels for a home using 10,800 kWh a year. Each 400W panel produces roughly 482 kWh annually at Minnesota sunlight levels. Your own figure depends on actual usage — pull a year of bills rather than assuming average consumption, since heating and EV charging change it a lot.
How much do solar panels cost in Minnesota?
A 9.2 kW system runs about $26,220 before incentives and $18,354 after the 30% federal credit, or roughly $2.85 per watt installed. Quotes vary widely by installer, roof complexity and whether your electrical panel needs upgrading — get three before deciding.
Worth reading before you buy
Regional estimates generated 2026-08-22 from Google Solar API rooftop samples across 14 Minnesota cities, and average Minnesota electricity rates. Not a quote and not financial or tax advice.