41st largest plant in Idaho · 4464th nationally
Mainline Windfarm is a wind power plant in Idaho with a nameplate capacity of 23.0 MW. It generates roughly 54.9k MWh per year — enough to power about 5,230 average U.S. homes.
Its capacity factor of 27% reflects intermittent or peaking operation.
| Plant Name | Mainline Windfarm |
|---|---|
| Operator | Mountain Air Projects, Llc |
| City | Glenns Ferry |
| County | Elmore County |
| State | Idaho |
| ZIP | 83623 |
| Coordinates | 43.04835, -115.41289 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Onshore Wind Turbine | Wind | 23.0 MW | Operating | 2012 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Idaho Power Company |
Wind farms harvest kinetic energy from moving air using large rotor blades coupled to generators. Like solar, they produce zero emissions but vary with weather. Onshore wind capacity factors typically run 30–45%; offshore can exceed 50%.