Is solar worth it in Minnesota?
A 7.0 kW rooftop system near Minneapolis produces about 9,330 kWh a year. Priced against the 16 residential tariffs currently on file in Minnesota, payback runs from 13 years on the best of them to 55 on the worst.
Why the tariff matters more than the panels
Two households in Minnesota with identical roofs and identical systems can see paybacks 13 and 55 years apart, purely because they are on different tariffs. Solar produces at midday; households consume in the evening. Only 54% of what these panels make is used as it is made — the rest is exported, and what an exported kWh earns is set by the tariff and by state net metering rules, not by the hardware.
That is why the figures here are computed hour by hour against each real tariff rather than by taking a bill and assuming solar removes a share of it. How this is modeled →
Payback by tariff in Minnesota
7.0 kW system at $3.00/W, household using 1000 kWh a month, no incentives. A range means the export credit is not filed with the tariff and the outcome depends on net metering rules — 16 of 16 tariffs here belong to a utility that reports residential net metering.
| Utility | Tariff | Structure | Annual saving | Payback |
|---|---|---|---|---|
| Northern States Power Co - Minnesota | Residential Electric Vehicle Service (A08) | Time-of-use | $871–$1,594 | 13–24y |
| Northern States Power Co - Minnesota | Residential TOD Overhead Standard (A02) | Time-of-use | $856–$1,564 | 13–25y |
| Northern States Power Co - Minnesota | Residential Service - Overhead Standard (A01) | Time-of-use | $830–$1,514 | 14–25y |
| Northern States Power Co - Minnesota | Residential Service - Underground Standard (A03) | Time-of-use | $830–$1,514 | 14–25y |
| Northern States Power Co - Minnesota | Residential TOD Underground Standard (A04) | Time-of-use | $817–$1,493 | 14–26y |
| Northern States Power Co - Minnesota | Residential TOD Underground Electric Space Heating (A04) | Time-of-use | $760–$1,371 | 15–28y |
| Northern States Power Co - Minnesota | Residential TOD Overhead Electric Space Heating (A02) | Time-of-use | $760–$1,371 | 15–28y |
| Northern States Power Co - Minnesota | Residential Service - Underground Electric Space Heating (A03) | Time-of-use | $726–$1,305 | 16–29y |
| Northern States Power Co - Minnesota | Residential Service - Overhead Electric Space Heating (A01) | Time-of-use | $726–$1,305 | 16–29y |
| Minnesota Power Inc | Residential-Seasonal | Flat | $604–$1,110 | 19–35y |
| Minnesota Power Inc | Residential-General | Flat | $579–$1,063 | 20–36y |
| Minnesota Power Inc | Residential - Space Heating | Flat | $579–$1,063 | 20–36y |
| Rochester Public Utilities | Residential - Time of Use | Time-of-use | $479–$975 | 22–44y |
| Minnesota Power Inc | Residential Dual Fuel Interruptible Electric Service | Flat | $435–$799 | 26–48y |
| Minnesota Power Inc | Residential Electric Vehicle Service | Time-of-use | $380–$723 | 29–55y |
Price it for your own usage and system size →
What would change this
Your roof. Production is modeled for Minneapolis on a south-facing array at 20° tilt. Shading, orientation and pitch all move it, and solar resource varies within Minnesota itself.
Your usage pattern. A household at home during the day self-consumes more and exports less, which shortens payback wherever export credit is poor.
Rising rates. These figures hold today's prices flat. Electricity prices have been rising, and every rise shortens payback — so treat these as a conservative bound.
State and local incentives. Not included here, and in some states they are worth more than the federal credit was. Check your state energy office before deciding.