12th largest plant in Colorado · 790th nationally
Neptune Energy Center Hybrid is a solar power plant in Colorado with a nameplate capacity of 450 MW. It generates roughly 411.0k MWh per year — enough to power about 39,143 average U.S. homes.
Its capacity factor of 10% reflects intermittent or peaking operation.
| Plant Name | Neptune Energy Center Hybrid |
|---|---|
| Operator | Neptune Energy Center, Llc |
| City | Boone |
| County | Pueblo County |
| State | Colorado |
| ZIP | 81025 |
| Coordinates | 38.33026, -104.41415 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| NT325 | Solar Photovoltaic | Solar | 325 MW | Operating | 2023 |
| NT125 | Batteries | Battery | 125 MW | Operating | 2023 |
| NERC Region | WECC |
|---|---|
| Balancing Authority | Public Service Company Of Colorado |
Utility-scale solar farms convert sunlight directly into electricity using photovoltaic panels. They produce zero direct emissions and have no fuel cost, but generation is variable — peaking at midday and falling to zero at night. Capacity factors typically run 18–28% in good locations.