Davis Besse
Ottawa County, Ohio · EIA plant ID 6149 · Operator: Energy Harbor Nuclear Generation LLC
Nameplate925MWSummer 894 MW
Generators1in service
Net generation7,233GWh12 mo to Aug 2026
Capacity factor92%nuclear units, summer MW
Heat rate—thermal plants only
First online1977
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), nuclear 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 7,684.3 | 100.5% | — |
| 2002 | 890.1 | 11.6% | — |
| 2003 | -70.2 | -0.9% | — |
| 2004 | 5,722.8 | 74.6% | — |
| 2005 | 7,156.1 | 93.6% | — |
| 2006 | 6,371.6 | 81.8% | — |
| 2007 | 7,705.8 | 100.1% | — |
| 2008 | 6,823.3 | 88.4% | — |
| 2009 | 7,609.6 | 97.2% | — |
| 2010 | 5,185.1 | 66.2% | — |
| 2011 | 6,328.9 | 80.8% | — |
| 2012 | 7,113.9 | 90.6% | — |
| 2013 | 7,679.8 | 98.1% | — |
| 2014 | 5,829.2 | 74.4% | — |
| 2015 | 7,893.9 | 100.8% | — |
| 2016 | 6,394.1 | 81.4% | — |
| 2017 | 7,875.4 | 100.6% | — |
| 2018 | 7,380.3 | 94.2% | — |
| 2019 | 7,837.5 | 100.1% | — |
| 2020 | 7,228.1 | 92.0% | — |
| 2021 | 7,779.1 | 99.3% | — |
| 2022 | 6,492.3 | 82.9% | — |
| 2023 | 7,985.7 | 102.0% | — |
| 2024 | 7,368.1 | 93.8% | — |
| 2025 | 7,791.9 | 99.5% | — |
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 | Nuclear | ST | 925.2 | 894 | Nov 1977 | Operating | — | coming soon |
Owner / operator
Operator: Energy Harbor Nuclear Generation LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Energy Harbor Nuclear Generation LLC | 100.0% | 925 MW |
Nearby plants
Within 80 km.
| Genoa Diesel Generating Station | 6 MW | 24.8 km |
| Fremont Energy Center | 740 MW | 25.2 km |
| Martin Marietta Wind Project | 5 MW | 27.5 km |
| Woodville RTO BTM | 3 MW | 28.1 km |
| Oregon Clean Energy Center | 1,062 MW | 30.8 km |
| FirstEnergy Bay Shore | 187 MW | 31.1 km |