27th largest plant in Indiana · 1124th nationally
Noblesville is a natural gas power plant in Indiana with a nameplate capacity of 283 MW. It generates roughly 1.3M MWh per year — enough to power about 121,220 average U.S. homes.
Its capacity factor of 51% puts it in the middle range — running steadily but not full-time. At 888 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (283 MW nameplate × hours in the month). Filled bars are actual net generation reported to EIA Form 923. The gap between them is capacity factor made visible.
| Plant Name | Noblesville |
|---|---|
| Operator | Duke Energy Indiana, Llc |
| City | Noblesville |
| County | Hamilton County |
| State | Indiana |
| ZIP | 46060 |
| Coordinates | 40.09690, -85.97140 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 3 | Natural Gas Fired Combined Cycle | Natural Gas | 61.0 MW | Operating | 2003 |
| 4 | Natural Gas Fired Combined Cycle | Natural Gas | 61.0 MW | Operating | 2003 |
| 5 | Natural Gas Fired Combined Cycle | Natural Gas | 61.0 MW | Operating | 2003 |
| 1 | Natural Gas Fired Combined Cycle | Natural Gas | 50.0 MW | Operating | 1950 |
| 2 | Natural Gas Fired Combined Cycle | Natural Gas | 50.0 MW | Operating | 1950 |
| CO₂ | 565.4k metric tons |
|---|---|
| SO₂ | 3 metric tons |
| NOₓ | 88 metric tons |
| CO₂ Rate | 888 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | RFC |
|---|---|
| Balancing Authority | Midcontinent Independent Transmission System Operator, Inc.. |
Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.