Wind Turbine Payback in Escambia County, AL
Wind turbine payback in Escambia 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 Escambia County, AL averages 3.47 m/s (7.8 mph). A 10 kW turbine there would make about 4,211 kWh a year, worth $695 at AL's 16.51¢/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 Escambia County
A home turbine is not worth buying for savings in Escambia County unless your spot is far windier than the county average, 7.5 m/s at the hub against 3.47 m/s here. Per kW, solar panels would make about 1,364 kWh a year here against the turbine's 421, so get a solar quote first.
What would have to change
- Power would have to cost 119¢/kWh, 7.2 times what AL pays now.
- Or the average wind at the hub would have to be 7.5 m/s instead of 3.47. A taller tower or an exposed ridge can add some of that; a rooftop never will.
Against the rest of AL
Escambia County is the 2,548th windiest of 3,144 US counties at turbine height; the national middle is 4.79 m/s. The windiest in AL is Mobile County at 4.72 m/s, payback 57 years.
Month by month in Escambia County
March is the strongest month here, at 3.94 m/s and about 534 kWh. July is the weakest, 2.73 m/s and 158 kWh, so the best month makes 3.4 times the worst. November to March brings in 55% of the year's output in Escambia County.
| Month | Wind at 30 m | Output | Worth |
|---|---|---|---|
| January | 3.88 m/s | 507 kWh | $84 |
| February | 3.89 m/s | 464 kWh | $77 |
| March | 3.94 m/s | 534 kWh | $88 |
| April | 3.81 m/s | 466 kWh | $77 |
| May | 3.36 m/s | 323 kWh | $53 |
| June | 2.90 m/s | 190 kWh | $31 |
| July | 2.73 m/s | 158 kWh | $26 |
| August | 2.76 m/s | 165 kWh | $27 |
| September | 3.26 m/s | 284 kWh | $47 |
| October | 3.57 m/s | 390 kWh | $64 |
| November | 3.79 m/s | 456 kWh | $75 |
| December | 3.79 m/s | 475 kWh | $78 |
What a taller tower would buy
Measured at 10 m the wind in Escambia County averages 2.24 m/s; at 50 m it is 4.25 m/s. That gives a shear exponent of 0.398, typical of rough, sheltered ground: trees or buildings slow the low wind a lot. Going from 20 m to 50 m takes output from 2,459 to 7,897 kWh a year, 221% 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 | 2.95 m/s | 2,459 kWh | over 100 years |
| 30 m | 3.47 m/s | 4,203 kWh | over 100 years |
| 40 m | 3.89 m/s | 6,032 kWh | over 100 years |
| 50 m | 4.25 m/s | 7,897 kWh | 77 years |
Counties around Escambia County
4 of the 6 closest counties are windier at turbine height; the windiest, Santa Rosa County, averages 4.82 m/s.
- Conecuh County, AL: 2.95 m/s, 2,455 kWh, payback over 100 years (24 mi)
- Santa Rosa County, FL: 4.82 m/s, 11,341 kWh, payback 58 years (32 mi)
- Monroe County, AL: 2.97 m/s, 2,513 kWh, payback over 100 years (34 mi)
- Escambia County, FL: 4.33 m/s, 8,346 kWh, payback 78 years (42 mi)
- Covington County, AL: 3.69 m/s, 5,121 kWh, payback over 100 years (43 mi)
- Baldwin County, AL: 4.33 m/s, 8,346 kWh, payback 73 years (47 mi)
Sun versus wind in Escambia County
Escambia County gets 4.67 kWh of sunshine per square metre a day on average. One kW of solar panels here would make roughly 1,364 kWh a year; one kW of the turbine above makes 421. Kilowatt for kilowatt, panels make 3.2 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.