1st largest plant in Maine · 384th nationally
William F Wyman Hybrid is a oil power plant in Maine with a nameplate capacity of 863 MW. It generates roughly 39.3k MWh per year — enough to power about 3,739 average U.S. homes.
Its capacity factor of 1% reflects intermittent or peaking operation. At 2250 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 (863 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 | William F Wyman Hybrid |
|---|---|
| Operator | Fpl Energy Wyman Llc |
| City | Yarmouth |
| County | Cumberland County |
| State | Maine |
| ZIP | 04096 |
| Coordinates | 43.75080, -70.15670 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| 4 | Petroleum Liquids | Residual Oil | 632 MW | Operating | 1978 |
| 3 | Petroleum Liquids | Residual Oil | 114 MW | Operating | 1965 |
| 1 | Petroleum Liquids | Residual Oil | 50.0 MW | Operating | 1957 |
| 2 | Petroleum Liquids | Residual Oil | 50.0 MW | Operating | 1958 |
| BESS | Batteries | Battery | 16.7 MW | Operating | 2016 |
| Owner | Location | Share |
|---|---|---|
| Fpl Energy Wyman Llc | Juno Beach, FL | 8434.0% |
| Constellation Nuclear | Warrenville, IL | 590.0% |
| Massachusetts Mun Wholes Electric Co | Ludlow, MA | 367.0% |
| Public Service Co Of Nh | Manchester, NH | 314.0% |
| Green Mountain Power Corp | Colchester, VT | 292.0% |
| The Town Of Lyndon Electric Department | Lyndonville, VT | 3.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| CO₂ | 44.2k metric tons |
|---|---|
| SO₂ | 136 metric tons |
| NOₓ | 43 metric tons |
| CO₂ Rate | 2250 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 | NPCC |
|---|---|
| Balancing Authority | Iso New England Inc. |
Oil-fired plants typically run only during peak demand or grid emergencies because oil is expensive compared to gas and coal. They have the highest CO₂ emissions per MWh of any common generation technology.