R D Morrow
Lamar County, Mississippi · EIA plant ID 6061 · Operator: South Mississippi El Pwr Assn
Nameplate558MWSummer 531 MW
Generators2in service
Net generation3,160GWh12 mo to Aug 2026
Capacity factor68%gas/coal/oil units, summer MW
Heat rate6,750Btu/kWhfossil units, electric fuel, HHV
First online2023Runs as baseload
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 | 2,154 | — | — |
| 2002 | 2,329.1 | — | — |
| 2003 | 2,642.5 | 75.4% | 10,558 |
| 2004 | 2,538 | 80.3% | 10,731 |
| 2005 | 2,551.3 | 80.9% | 10,737 |
| 2006 | 2,636.9 | 83.6% | 10,819 |
| 2007 | 2,679.5 | 85.0% | 10,579 |
| 2008 | 2,545.8 | 80.5% | 10,641 |
| 2009 | 1,903.3 | 60.4% | 10,779 |
| 2010 | 2,230.5 | 70.7% | 10,860 |
| 2011 | 1,480.9 | 47.0% | 11,229 |
| 2012 | 1,070.7 | 33.9% | 11,576 |
| 2013 | 991.1 | 31.4% | 11,832 |
| 2014 | 764.2 | 24.2% | 10,967 |
| 2015 | 245.9 | 7.8% | 11,517 |
| 2016 | 391.7 | 12.4% | 11,357 |
| 2017 | 95.1 | 3.0% | 11,608 |
| 2018 | 119.3 | 4.5% | 12,062 |
| 2019 | 0 | — | — |
| 2023 | 2,859.5 | 73.4% | 6,496 |
| 2024 | 2,677.7 | 57.5% | 6,538 |
| 2025 | 2,805.4 | 60.4% | 6,702 |
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 |
|---|---|---|---|---|---|---|---|---|
| MOR1 | Natural Gas Fired Combined Cycle | CA | 156 | 155 | Mar 2023 | Operating | — | coming soon |
| MOR2 | Natural Gas Fired Combined Cycle | CT | 402 | 375.5 | Mar 2023 | Operating | — | coming soon |
| 1 | Conventional Steam Coal | ST | 200 | 180 | Apr 1978 | Retired Nov 2018 | — | coming soon |
| 2 | Conventional Steam Coal | ST | 200 | 180 | Dec 1978 | Retired Nov 2018 | — | coming soon |
Owner / operator
Operator: South Mississippi El Pwr Assn. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| South Mississippi El Pwr Assn | 100.0% | 558 MW |
Nearby plants
Within 80 km.
| Hattiesburg Solar Farm | 50 MW | 10.9 km |
| Sumrall II Solar Farm | 52 MW | 21.7 km |
| Sumrall I Solar Farm | 52 MW | 22.8 km |
| OE_MS4 | — | 26 km |
| Leaf River Cellulose LLC | 50 MW | 33.2 km |
| Moselle | 511 MW | 35.5 km |