Markland
Switzerland County, Indiana · EIA plant ID 1005 · Operator: Duke Energy Indiana, LLC
Nameplate78MWSummer 54 MW
Generators3in service
Net generation253GWh12 mo to Dec 2025
Capacity factor54%hydro units, summer MW
Heat rate—thermal plants only
First online1967
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), hydro 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 | 445.8 | 113.1% | — |
| 2002 | 319.8 | 81.1% | — |
| 2003 | 332.2 | 84.3% | — |
| 2004 | 334.4 | 84.6% | — |
| 2005 | 360 | 91.3% | — |
| 2006 | 386.5 | 98.0% | — |
| 2007 | 351.4 | 89.1% | — |
| 2008 | 341.9 | 86.5% | — |
| 2009 | 406.7 | 103.2% | — |
| 2010 | 359.1 | 91.1% | — |
| 2011 | 306.4 | 77.7% | — |
| 2012 | 371.3 | 93.9% | — |
| 2013 | 332.3 | 84.3% | — |
| 2014 | 300 | 76.1% | — |
| 2015 | 303.1 | 76.9% | — |
| 2016 | 342.8 | 86.7% | — |
| 2017 | 204.3 | 51.8% | — |
| 2018 | 129.8 | 32.9% | — |
| 2019 | 164.4 | 36.9% | — |
| 2020 | 204.7 | 45.9% | — |
| 2021 | 320.3 | 68.1% | — |
| 2022 | 285.4 | 60.7% | — |
| 2023 | 394.7 | 83.9% | — |
| 2024 | 298.8 | 63.3% | — |
| 2025 | 252.6 | 53.7% | — |
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 Hydroelectric | HY | 25.9 | 17.9 | Apr 1967 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 25.9 | 17.9 | Jan 1967 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 25.9 | 17.9 | Feb 1967 | Operating | — | coming soon |
Owner / operator
Operator: Duke Energy Indiana, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Duke Energy Indiana, LLC | 100.0% | 78 MW |
Nearby plants
Within 80 km.
| Ghent | 2,226 MW | 7 km |
| East Bend | 772 MW | 16.9 km |
| Bavarian LFGTE | 5 MW | 28.2 km |
| Crittenden Solar Facility | 3 MW | 30.6 km |
| Flag Run Solar | — | 32.3 km |
| Walton 1 Solar Facility | 2 MW | 33.2 km |