Keystone
Armstrong County, Pennsylvania · EIA plant ID 3136 · Operator: KeyCon Operating LLC
Nameplate1,883MWSummer 1,711 MW
Generators6in service
Net generation4,001GWh12 mo to Aug 2026
Capacity factor27%gas/coal/oil units, summer MW
Heat rate10,124Btu/kWhfossil units, electric fuel, HHV
First online1967Runs as intermediate
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 12,761 | — | — |
| 2002 | 12,218.8 | — | — |
| 2003 | 12,445.3 | 83.0% | 9,366 |
| 2004 | 12,262.8 | 81.5% | 9,545 |
| 2005 | 13,488.6 | 89.9% | 9,578 |
| 2006 | 12,727.5 | 84.9% | 9,526 |
| 2007 | 12,277.6 | 81.9% | 9,652 |
| 2008 | 14,144.7 | 94.1% | 9,553 |
| 2009 | 10,542.6 | 70.3% | 9,590 |
| 2010 | 13,552.5 | 90.4% | 9,551 |
| 2011 | 11,175.9 | 74.6% | 9,581 |
| 2012 | 9,523.4 | 63.4% | 9,630 |
| 2013 | 12,455.5 | 83.1% | 9,464 |
| 2014 | 11,524.9 | 76.9% | 9,638 |
| 2015 | 9,514.8 | 63.5% | 9,928 |
| 2016 | 10,215.2 | 68.0% | 10,185 |
| 2017 | 11,818.2 | 78.8% | 9,740 |
| 2018 | 12,417.7 | 82.8% | 9,659 |
| 2019 | 11,005.3 | 73.4% | 9,754 |
| 2020 | 7,291.4 | 48.5% | 10,382 |
| 2021 | 7,415.7 | 49.5% | 10,480 |
| 2022 | 5,077.4 | 33.9% | 10,412 |
| 2023 | 2,763.5 | 18.4% | 10,735 |
| 2024 | 3,042.5 | 20.2% | 10,627 |
| 2025 | 4,598.3 | 30.7% | 10,250 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | ST | 936 | 850 | Aug 1967 | Operating | — | coming soon |
| 2 | Conventional Steam Coal | ST | 936 | 850 | Jul 1968 | Operating | — | coming soon |
| 3 | Petroleum Liquids | IC | 2.5 | 2.8 | Nov 1968 | Operating (Standby / backup) | — | coming soon |
| 4 | Petroleum Liquids | IC | 2.9 | 2.8 | Nov 1968 | Operating (Standby / backup) | — | coming soon |
| 5 | Petroleum Liquids | IC | 2.9 | 2.8 | Nov 1968 | Operating (Standby / backup) | — | coming soon |
| 6 | Petroleum Liquids | IC | 2.9 | 2.8 | Nov 1968 | Operating (Standby / backup) | — | coming soon |
Owner / operator
Operator: KeyCon Operating LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Chief Keystone Power LLC | 44.5% | 837 MW |
| Chief Keystone Power II, LLC | 22.8% | 430 MW |
| Keystone Power Pass-Through Holders LLC | 16.7% | 314 MW |
| Montour LLC | 12.3% | 232 MW |
| Keystone Power LLC | 3.7% | 70 MW |
Nearby plants
Within 80 km.
| Armstrong | 688 MW | 2.6 km |
| Burrell - PA 0396 (Copeland) | — | 8.2 km |
| Indiana University of Pennsylvania | 24 MW | 16.2 km |
| Kittanning - PA 0383 (Hoeter) | — | 17.9 km |
| Kittanning - PA 0406 (Hoeter B) | — | 17.9 km |
| Kittanning - PA 0407 (Hoeter C) | — | 17.9 km |