Wind Turbine Payback in Beaver County, PA
Wind turbine payback in Beaver 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 Beaver County, PA averages 3.44 m/s (7.7 mph). A 10 kW turbine there would make about 4,094 kWh a year, worth $865 at PA's 21.13¢/kWh. Against an installed cost of about $100,000, that is a payback of over 100 years, and the turbine is built to last about 20.
What to do in Beaver County
A home turbine is not worth buying for savings in Beaver County unless your spot is far windier than the county average, 6.5 m/s at the hub against 3.44 m/s here. Per kW, solar panels would make about 1,098 kWh a year here against the turbine's 409, so get a solar quote first.
What would have to change
- Power would have to cost 122¢/kWh, 5.8 times what PA pays now.
- Or the average wind at the hub would have to be 6.5 m/s instead of 3.44. A taller tower or an exposed ridge can add some of that; a rooftop never will.
Against the rest of PA
Beaver County is the 2,573rd windiest of 3,144 US counties at turbine height; the national middle is 4.79 m/s. The windiest in PA is Philadelphia County at 4.74 m/s, payback 44 years.
Month by month in Beaver County
January is the strongest month here, at 4.10 m/s and about 601 kWh. August is the weakest, 2.65 m/s and 142 kWh, so the best month makes 4.2 times the worst. November to March brings in 59% of the year's output in Beaver County.
| Month | Wind at 30 m | Output | Worth |
|---|---|---|---|
| January | 4.10 m/s | 601 kWh | $127 |
| February | 4.20 m/s | 585 kWh | $124 |
| March | 3.99 m/s | 556 kWh | $117 |
| April | 3.91 m/s | 506 kWh | $107 |
| May | 3.22 m/s | 280 kWh | $59 |
| June | 2.96 m/s | 203 kWh | $43 |
| July | 2.69 m/s | 151 kWh | $32 |
| August | 2.65 m/s | 142 kWh | $30 |
| September | 2.89 m/s | 187 kWh | $40 |
| October | 3.37 m/s | 326 kWh | $69 |
| November | 3.59 m/s | 385 kWh | $81 |
| December | 3.75 m/s | 459 kWh | $97 |
What a taller tower would buy
Measured at 10 m the wind in Beaver County averages 2.11 m/s; at 50 m it is 4.31 m/s. That gives a shear exponent of 0.444, typical of rough, sheltered ground: trees or buildings slow the low wind a lot. Going from 20 m to 50 m takes output from 2,231 to 8,233 kWh a year, 269% 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 | 2.87 m/s | 2,231 kWh | over 100 years |
| 30 m | 3.44 m/s | 4,077 kWh | over 100 years |
| 40 m | 3.9 m/s | 6,102 kWh | 78 years |
| 50 m | 4.31 m/s | 8,233 kWh | 58 years |
Counties around Beaver County
4 of the 6 closest counties are windier at turbine height; the windiest, Lawrence County, averages 3.55 m/s.
- Hancock County, WV: 3.44 m/s, 4,094 kWh, payback over 100 years (16 mi)
- Lawrence County, PA: 3.55 m/s, 4,530 kWh, payback over 100 years (21 mi)
- Columbiana County, OH: 3.55 m/s, 4,530 kWh, payback over 100 years (23 mi)
- Allegheny County, PA: 3.49 m/s, 4,289 kWh, payback over 100 years (24 mi)
- Butler County, PA: 3.49 m/s, 4,289 kWh, payback over 100 years (28 mi)
- Jefferson County, OH: 3.44 m/s, 4,094 kWh, payback over 100 years (29 mi)
Sun versus wind in Beaver County
Beaver County gets 3.76 kWh of sunshine per square metre a day on average. One kW of solar panels here would make roughly 1,098 kWh a year; one kW of the turbine above makes 409. Kilowatt for kilowatt, panels make 2.7 times as much here as the turbine. 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.