Mountain
Oil power plant in Cumberland County, Pennsylvania. 54 MW of nameplate capacity across 2 generators, operated by Mountain Power, LLC.
Also known as EIA plant 3111
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 54 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- June 1972First generator online
- Operator
- Mountain Power, LLCEIA operator ID 63037
- Grid
- PJMBalancing authority PJM
- Price nodes
- 2 PJM nodesResource nodes with prices
- Location
- Cumberland County, PA40.1228, −77.1716
- EIA plant ID
- 3111EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Mountain produces
Free · EIA-923Net generation, 2025
16.3 GWh
16,293 MWh, final
Capacity factor, 2025
3.4%
2024: 0.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
1.7–16.3
GWh a year. Low 2019, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 10,803 | Not reported | 12 of 12 |
| 2001 | 5,316 | Not reported | 12 of 12 |
| 2002 | 11,044 | Not reported | 12 of 12 |
| 2003 | 7,624 | Not reported | 12 of 12 |
| 2004 | 3,084 | Not reported | 12 of 12 |
| 2005 | 8,214 | Not reported | 12 of 12 |
| 2006 | 10,991 | Not reported | 12 of 12 |
| 2007 | 16,789 | Not reported | 12 of 12 |
| 2008 | 5,521 | Not reported | 12 of 12 |
| 2009 | 1,570 | Not reported | 12 of 12 |
| 2010 | 4,890 | 1.0% | 12 of 12 |
| 2011 | 6,342 | 1.3% | 12 of 12 |
| 2012 | 5,669 | 1.2% | 12 of 12 |
| 2013 | 2,944 | 0.6% | 12 of 12 |
| 2014 | 3,045 | 0.6% | 12 of 12 |
| 2015 | 3,724 | 0.8% | 12 of 12 |
| 2016 | 2,675 | 0.6% | 12 of 12 |
| 2017 | 7,426 | 1.6% | 12 of 12 |
| 2018 | 6,702 | 1.4% | 12 of 12 |
| 2019 | 1,727 | 0.4% | 12 of 12 |
| 2020 | 3,503 | 0.7% | 12 of 12 |
| 2021 | 3,710 | 0.8% | 12 of 12 |
| 2022 | 6,825 | 1.4% | 12 of 12 |
| 2023 | 2,982 | 0.6% | 12 of 12 |
| 2024 | 3,644 | 0.8% | 12 of 12 |
| 2025 | 16,293 | 3.4% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · PJMEmissions
Free · EPA CAMPDCO₂, 2025
22,313
US short tons. 2024: 5,165
SO₂, 2025
14
US short tons
NOx, 2025
91
US short tons
CO₂ per MWh, calculated
1.37 t
About 2,739 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (31, 32), matched to EIA plant 3111 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Petroleum Liquids | 27.0 | June 1972 |
| 2 | Petroleum Liquids | 27.0 | June 1972 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Mountain Power, LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Mountain
Questions about Mountain
How much power does Mountain produce?
Mountain reported 16,293 MWh (16.3 GWh) of net generation in 2025, a 3.4% capacity factor on 54 MW of nameplate capacity.
Where is Mountain?
Mountain is in Cumberland County, Pennsylvania, at 40.1228, −77.1716. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Mountain?
EIA-860M for August 2026 lists Mountain Power, LLC as the operator (EIA operator ID 63037). The operator is not always the owner.
When did Mountain start operating?
Its first generator began operating in June 1972, according to EIA-860M.
Does InfraMap have power prices for Mountain?
Yes. InfraMap has PJM day-ahead and real-time prices at 2 price nodes linked to Mountain, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- PJM day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page