58th largest plant in Connecticut · 6210th nationally
Rainbow (Ct) is a hydroelectric power plant in Connecticut with a nameplate capacity of 8.0 MW. It generates roughly 35.3k MWh per year — enough to power about 3,366 average U.S. homes.
Its capacity factor of 50% puts it in the middle range — running steadily but not full-time.
| Plant Name | Rainbow (Ct) |
|---|---|
| Operator | Farmington River Power Company |
| City | Windsor |
| County | Hartford County |
| State | Connecticut |
| ZIP | 06095 |
| Coordinates | 41.91531, -72.69362 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | Water | 4.0 MW | Operating | 1925 |
| 2 | Conventional Hydroelectric | Water | 4.0 MW | Operating | 1925 |
| NERC Region | NPCC |
|---|---|
| Balancing Authority | Iso New England Inc. |
Hydroelectric plants spin turbines using falling or flowing water — typically from a dam-impounded reservoir. They are dispatchable, long-lived, and emission-free at the point of generation, though large reservoirs can disrupt rivers and ecosystems and methane can be released from flooded vegetation.