Wind Turbine Payback in Pipestone County, MN
Wind turbine payback in Pipestone County
No. The turbine wears out before it pays for itself.
At 30 m, the height a home turbine tower usually reaches, the wind in Pipestone County, MN averages 6.65 m/s (14.9 mph). A 10 kW turbine there would make about 24,509 kWh a year, worth $4,029 at MN's 16.44¢/kWh. Against an installed cost of about $100,000, that is a payback of 25 years, and the turbine is built to last about 20.
What to do in Pipestone County
A home turbine is not worth buying for savings in Pipestone County unless your spot is far windier than the county average, 7.5 m/s at the hub against 6.65 m/s here. Per kW, solar panels would make about 1,177 kWh a year here against the turbine's 2,451, so get a solar quote first.
What would have to change
- Power would have to cost 20¢/kWh, 1.2 times what MN pays now.
- Or the average wind at the hub would have to be 7.5 m/s instead of 6.65. A taller tower or an exposed ridge can add some of that; a rooftop never will.
Against the rest of MN
Pipestone County is the 92nd windiest of 3,144 US counties at turbine height; the national middle is 4.79 m/s. The windiest in MN is Lincoln County at 6.68 m/s, payback 25 years.
Month by month in Pipestone County
April is the strongest month here, at 7.43 m/s and about 2,469 kWh. August is the weakest, 5.56 m/s and 1,397 kWh, so the best month makes 1.8 times the worst. November to March brings in 44% of the year's output in Pipestone County.
| Month | Wind at 30 m | Output | Worth |
|---|---|---|---|
| January | 6.81 m/s | 2,179 kWh | $358 |
| February | 6.86 m/s | 1,998 kWh | $328 |
| March | 7.04 m/s | 2,321 kWh | $382 |
| April | 7.43 m/s | 2,469 kWh | $406 |
| May | 6.92 m/s | 2,250 kWh | $370 |
| June | 6.22 m/s | 1,755 kWh | $289 |
| July | 5.56 m/s | 1,397 kWh | $230 |
| August | 5.56 m/s | 1,397 kWh | $230 |
| September | 6.67 m/s | 2,028 kWh | $333 |
| October | 7.03 m/s | 2,316 kWh | $381 |
| November | 6.96 m/s | 2,199 kWh | $362 |
| December | 6.72 m/s | 2,123 kWh | $349 |
What a taller tower would buy
Measured at 10 m the wind in Pipestone County averages 5.29 m/s; at 50 m it is 7.39 m/s. That gives a shear exponent of 0.208, typical of ordinary open country. Going from 20 m to 50 m takes output from 20,502 to 29,783 kWh a year, 45% more, before counting the extra cost of the taller tower. Why tower height decides it explains the shear behind these numbers.
| Hub height | Average wind | Output | Payback |
|---|---|---|---|
| 20 m | 6.11 m/s | 20,502 kWh | 30 years |
| 30 m | 6.65 m/s | 24,473 kWh | 25 years |
| 40 m | 7.05 m/s | 27,434 kWh | 22 years |
| 50 m | 7.39 m/s | 29,783 kWh | 20 years |
Counties around Pipestone County
2 of the 6 closest counties are windier at turbine height; the windiest, Murray County, averages 6.68 m/s.
- Moody County, SD: 6.61 m/s, 24,216 kWh, payback 28 years (21 mi)
- Rock County, MN: 6.46 m/s, 23,112 kWh, payback 26 years (24 mi)
- Murray County, MN: 6.68 m/s, 24,728 kWh, payback 25 years (25 mi)
- Lincoln County, MN: 6.68 m/s, 24,728 kWh, payback 25 years (27 mi)
- Nobles County, MN: 6.57 m/s, 23,922 kWh, payback 25 years (34 mi)
- Lyon County, MN: 6.5 m/s, 23,407 kWh, payback 26 years (34 mi)
Sun versus wind in Pipestone County
Pipestone County gets 4.03 kWh of sunshine per square metre a day on average. One kW of solar panels here would make roughly 1,177 kWh a year; one kW of the turbine above makes 2,451. This is one of the rare places where a kilowatt of turbine out-produces a kilowatt of panels, by 2.1 times. Panel output assumes an 80% system performance ratio. Wind or solar runs the same comparison for every county.
How this is worked out
Wind is NASA's Power climate record, the 2001-2025 average at 10 m and 50 m for the county's centre, carried to 30 m with this county's own measured wind shear and spread into hours with a Rayleigh distribution. The turbine is a generic 10 kW, 7 m rotor machine with 10% losses. Cost is $10,000 per kW installed with no tax credit, because the federal one ended in 2025. One county-centre number cannot see your hilltop or your tree line, so treat it as the starting point for a site survey, not a substitute. The full method and its weak spots are in how the numbers are made.