Jack Watson
Natural gas power plant in Harrison County, Mississippi. 919.1 MW of nameplate capacity across 3 generators, operated by Mississippi Power Co.
Also known as Plant Jack Watson · EIA plant 2049
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Key facts
- Capacity
- 919.1 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- June 1968First generator online
- Operator
- Mississippi Power CoEIA operator ID 12686
- Grid
- SOCOBalancing authority SOCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Harrison County, MS30.4392, −89.0286
- EIA plant ID
- 2049EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Jack Watson produces
Free · EIA-923Net generation, 2025
2.63 TWh
2,633,847 MWh, final
Capacity factor, 2025
32.7%
2024: 29.7%
January to July 2026
1.52 TWh
Provisional
Range, 2015 to 2025
1.7–3.3
TWh a year. Low 2015, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 5,619,578 | Not reported | 12 of 12 |
| 2001 | 4,868,196 | Not reported | 12 of 12 |
| 2002 | 4,731,902 | Not reported | 12 of 12 |
| 2003 | 2,606,299 | Not reported | 6 of 12 |
| 2004 | 4,701,252 | Not reported | 12 of 12 |
| 2005 | 3,773,739 | Not reported | 12 of 12 |
| 2006 | 4,878,069 | Not reported | 12 of 12 |
| 2007 | 4,802,210 | Not reported | 12 of 12 |
| 2008 | 316,272 | Not reported | 1 of 12 |
| 2009 | 297,690 | Not reported | 1 of 12 |
| 2010 | 259,018 | 28.6% | 1 of 12 |
| 2011 | 2,621,043 | 26.9% | 11 of 12 |
| 2012 | 1,960,589 | 18.4% | 12 of 12 |
| 2013 | 3,178,913 | 29.9% | 12 of 12 |
| 2014 | 3,852,956 | 39.5% | 11 of 12 |
| 2015 | 1,655,871 | Not reported | 12 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | 596,062 | Not reported | 6 of 12 |
| 2019 | 2,558,552 | 31.8% | 12 of 12 |
| 2020 | 2,234,851 | 27.7% | 12 of 12 |
| 2021 | 2,155,493 | 26.8% | 12 of 12 |
| 2022 | 2,595,782 | 32.2% | 12 of 12 |
| 2023 | 3,271,540 | 40.6% | 12 of 12 |
| 2024 | 2,397,023 | 29.7% | 12 of 12 |
| 2025 | 2,633,847 | 32.7% | 12 of 12 |
| 2026 (provisional, partial year) | 1,522,181 | 32.6% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDCO₂, 2025
Not reported
US short tons. 2024: Not reported
SO₂, 2025
Not reported
US short tons
NOx, 2025
3,538
US short tons
2 of 4 EPA units reported CO₂ in 2025 (1, 2, 3, 4, 5, CTA, CTB), matched to EIA plant 2049 through the EPA–EIA crosswalk.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
51,281
million gallons
Consumption, 2024
2,477
million gallons
Source
Biloxi River
Surface, Brackish. Once-through
Watershed stress
Very low/none · 0.191
USGS SUI, HUC12 Fritz Creek-Biloxi River
24 of 24 cooling months report withdrawal. Saline, brackish or ocean intake; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 4 | Natural Gas Steam Turbine | 299.2 | June 1968 |
| 5 | Natural Gas Steam Turbine | 578.0 | May 1973 |
| A | Natural Gas Fired Combustion Turbine | 41.9 | June 1970 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Mississippi Power Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Jack Watson
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Questions about Jack Watson
How much power does Jack Watson produce?
Jack Watson reported 2,633,847 MWh (2.63 TWh) of net generation in 2025, a 32.7% capacity factor on 919.1 MW of nameplate capacity. From January to July 2026 it reported 1.52 TWh, which is provisional.
Where is Jack Watson?
Jack Watson is in Harrison County, Mississippi, at 30.4392, −89.0286. It is in the Southern Company Services, Inc. - Trans balancing area (SOCO).
Who operates Jack Watson?
EIA-860M for August 2026 lists Mississippi Power Co as the operator (EIA operator ID 12686). The operator is not always the owner.
When did Jack Watson start operating?
Its first generator began operating in June 1968, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page