Wind Turbine Payback in Barron County, WI
Wind turbine payback in Barron 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 Barron County, WI averages 6.03 m/s (13.5 mph). A 10 kW turbine there would make about 19,926 kWh a year, worth $3,796 at WI's 19.05¢/kWh. Against an installed cost of about $100,000, that is a payback of 26 years, and the turbine is built to last about 20.
What to do in Barron County
A home turbine is not worth buying for savings in Barron County unless your spot is far windier than the county average, 6.9 m/s at the hub against 6.03 m/s here. Per kW, solar panels would make about 1,092 kWh a year here against the turbine's 1,993, so get a solar quote first.
What would have to change
- Power would have to cost 25¢/kWh, 1.3 times what WI pays now.
- Or the average wind at the hub would have to be 6.9 m/s instead of 6.03. A taller tower or an exposed ridge can add some of that; a rooftop never will.
Against the rest of WI
Barron County is the 791st 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 Barron County
April is the strongest month here, at 6.59 m/s and about 1,976 kWh. July is the weakest, 5.09 m/s and 1,114 kWh, so the best month makes 1.8 times the worst. November to March brings in 46% of the year's output in Barron County.
| Month | Wind at 30 m | Output | Worth |
|---|---|---|---|
| January | 6.36 m/s | 1,902 kWh | $362 |
| February | 6.59 m/s | 1,844 kWh | $351 |
| March | 6.34 m/s | 1,890 kWh | $360 |
| April | 6.59 m/s | 1,976 kWh | $376 |
| May | 6.07 m/s | 1,716 kWh | $327 |
| June | 5.59 m/s | 1,375 kWh | $262 |
| July | 5.09 m/s | 1,114 kWh | $212 |
| August | 5.19 m/s | 1,177 kWh | $224 |
| September | 5.99 m/s | 1,612 kWh | $307 |
| October | 6.33 m/s | 1,879 kWh | $358 |
| November | 6.26 m/s | 1,775 kWh | $338 |
| December | 6.06 m/s | 1,711 kWh | $326 |
What a taller tower would buy
Measured at 10 m the wind in Barron County averages 4.72 m/s; at 50 m it is 6.76 m/s. That gives a shear exponent of 0.223, typical of ordinary open country. Going from 20 m to 50 m takes output from 16,114 to 25,311 kWh a year, 57% 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 | 5.51 m/s | 16,114 kWh | 33 years |
| 30 m | 6.03 m/s | 19,943 kWh | 26 years |
| 40 m | 6.43 m/s | 22,904 kWh | 23 years |
| 50 m | 6.76 m/s | 25,311 kWh | 21 years |
Counties around Barron County
1 of the 6 closest counties is windier at turbine height; the windiest, Polk County, averages 6.08 m/s.
- Polk County, WI: 6.08 m/s, 20,297 kWh, payback 26 years (29 mi)
- Washburn County, WI: 5.62 m/s, 16,907 kWh, payback 31 years (32 mi)
- Dunn County, WI: 6.01 m/s, 19,778 kWh, payback 27 years (34 mi)
- Rusk County, WI: 5.19 m/s, 13,837 kWh, payback 38 years (35 mi)
- Chippewa County, WI: 5.9 m/s, 18,964 kWh, payback 28 years (38 mi)
- Burnett County, WI: 5.77 m/s, 18,006 kWh, payback 29 years (39 mi)
Sun versus wind in Barron County
Barron County gets 3.74 kWh of sunshine per square metre a day on average. One kW of solar panels here would make roughly 1,092 kWh a year; one kW of the turbine above makes 1,993. This is one of the rare places where a kilowatt of turbine out-produces a kilowatt of panels, by 1.8 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.