Wind Turbine Payback in Sheboygan County, WI
Wind turbine payback in Sheboygan County
Only just. The money comes back late in the turbine's life.
At 30 m, the height a home turbine tower usually reaches, the wind in Sheboygan County, WI averages 7.26 m/s (16.2 mph). A 10 kW turbine there would make about 28,881 kWh a year, worth $5,502 at WI's 19.05¢/kWh. Against an installed cost of about $100,000, that is a payback of 18 years, and the turbine is built to last about 20.
What to do in Sheboygan County
It is close enough that your own site decides it. If you have open land with no trees or buildings upwind, ask an installer to log the wind at 30 m or higher; anything above 6.9 m/s pays back in time. Per kW, solar panels would make about 1,072 kWh a year here against the turbine's 2,888, so get a solar quote first.
What would have to change
- Power already costs enough here: break-even is 17¢/kWh and WI pays 19.05¢.
- The wind clears the break-even speed of 6.9 m/s at today's price.
Against the rest of WI
Sheboygan County is the 11th windiest of 3,144 US counties at turbine height; the national middle is 4.79 m/s. The windiest in WI is Manitowoc County at 7.32 m/s, payback 18 years.
Month by month in Sheboygan County
January is the strongest month here, at 8.27 m/s and about 3,016 kWh. August is the weakest, 5.60 m/s and 1,421 kWh, so the best month makes 2.1 times the worst. November to March brings in 49% of the year's output in Sheboygan County.
| Month | Wind at 30 m | Output | Worth |
|---|---|---|---|
| January | 8.27 m/s | 3,016 kWh | $575 |
| February | 8.11 m/s | 2,649 kWh | $505 |
| March | 7.54 m/s | 2,616 kWh | $498 |
| April | 7.79 m/s | 2,670 kWh | $509 |
| May | 7.12 m/s | 2,369 kWh | $451 |
| June | 6.32 m/s | 1,812 kWh | $345 |
| July | 5.66 m/s | 1,462 kWh | $279 |
| August | 5.60 m/s | 1,421 kWh | $271 |
| September | 6.67 m/s | 2,027 kWh | $386 |
| October | 7.75 m/s | 2,738 kWh | $522 |
| November | 8.16 m/s | 2,862 kWh | $545 |
| December | 8.16 m/s | 2,957 kWh | $563 |
What a taller tower would buy
Measured at 10 m the wind in Sheboygan County averages 6.27 m/s; at 50 m it is 7.77 m/s. That gives a shear exponent of 0.133, typical of very open, smooth ground where height adds little. Going from 20 m to 50 m takes output from 26,170 to 32,343 kWh a year, 24% 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 | 6.88 m/s | 26,170 kWh | 20 years |
| 30 m | 7.26 m/s | 28,878 kWh | 18 years |
| 40 m | 7.54 m/s | 30,826 kWh | 17 years |
| 50 m | 7.77 m/s | 32,343 kWh | 16 years |
Counties around Sheboygan County
1 of the 6 closest counties is windier at turbine height; the windiest, Manitowoc County, averages 7.32 m/s.
- Ozaukee County, WI: 6.43 m/s, 22,891 kWh, payback 23 years (17 mi)
- Manitowoc County, WI: 7.32 m/s, 29,299 kWh, payback 18 years (30 mi)
- Calumet County, WI: 6.53 m/s, 23,628 kWh, payback 22 years (34 mi)
- Washington County, WI: 6.43 m/s, 22,891 kWh, payback 23 years (35 mi)
- Fond du Lac County, WI: 6.12 m/s, 20,594 kWh, payback 26 years (38 mi)
- Winnebago County, WI: 6.12 m/s, 20,594 kWh, payback 26 years (52 mi)
Sun versus wind in Sheboygan County
Sheboygan County gets 3.67 kWh of sunshine per square metre a day on average. One kW of solar panels here would make roughly 1,072 kWh a year; one kW of the turbine above makes 2,888. This is one of the rare places where a kilowatt of turbine out-produces a kilowatt of panels, by 2.7 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.