Rocky Mountain Hydroelectric Plant
Floyd County, Georgia · EIA plant ID 6189 · Operator: Oglethorpe Power Corporation
Nameplate848MWSummer 1,035 MW
Generators3in service
Net generation-442GWh12 mo to Aug 2026
Capacity factor—not meaningful for storage
Heat rate—thermal plants only
First online1995
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), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
No capacity factor available.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | -506.1 | — | — |
| 2002 | -497.4 | — | — |
| 2003 | -520.7 | — | — |
| 2004 | -495.8 | — | — |
| 2005 | -477.8 | — | — |
| 2006 | -478.2 | — | — |
| 2007 | -303.1 | — | — |
| 2008 | -412.6 | — | — |
| 2009 | -440.4 | — | — |
| 2010 | -452.3 | — | — |
| 2011 | -459.2 | — | — |
| 2012 | -440.7 | — | — |
| 2013 | -468.9 | — | — |
| 2014 | -472.5 | — | — |
| 2015 | -489.6 | — | — |
| 2016 | -489.1 | — | — |
| 2017 | -535 | — | — |
| 2018 | -443.6 | — | — |
| 2019 | -531.1 | — | — |
| 2020 | -500.2 | — | — |
| 2021 | -390.3 | — | — |
| 2022 | -423 | — | — |
| 2023 | -432.7 | — | — |
| 2024 | -425.9 | — | — |
| 2025 | -452.6 | — | — |
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 | Hydroelectric Pumped Storage | PS | 282.6 | 345 | Jul 1995 | Operating | — | coming soon |
| 2 | Hydroelectric Pumped Storage | PS | 282.6 | 345 | Jun 1995 | Operating | — | coming soon |
| 3 | Hydroelectric Pumped Storage | PS | 282.6 | 345 | Jun 1995 | Operating | — | coming soon |
Owner / operator
Operator: Oglethorpe Power Corporation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Oglethorpe Power Corporation | 74.6% | 633 MW |
| Georgia Power Co | 25.4% | 215 MW |
Nearby plants
Within 80 km.
| Inland Paperboard Packaging Rome | 70 MW | 11.6 km |
| Hammond | — | 12 km |
| Chattooga Gore | 2 MW | 20.8 km |
| Polk Cedartown 2 | 2 MW | 35.4 km |
| Cedartown Battery Energy Storage Project | retired | 35.8 km |
| Polk County GA S1, LLC | 3 MW | 35.8 km |