S O Purdom
Natural gas power plant in Wakulla County, Florida. 270.1 MW of nameplate capacity across 2 generators, operated by City of Tallahassee - (FL).
Also known as S O Purdom Power Plant · S.O. Purdom · SO Purdom · EIA plant 689
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Key facts
- Capacity
- 270.1 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- July 2000First generator online
- Operator
- City of Tallahassee - (FL)EIA operator ID 18445
- Grid
- TALBalancing authority TAL
- Price nodes
- None linkedNo verified ISO node
- Location
- Wakulla County, FL30.1623, −84.2007
- EIA plant ID
- 689EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power S O Purdom produces
Free · EIA-923Net generation, 2025
1.38 TWh
1,383,380 MWh, final
Capacity factor, 2025
58.5%
2024: 50.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
0.9–1.4
TWh a year. Low 2016, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 570,171 | Not reported | 12 of 12 |
| 2001 | 1,566,742 | Not reported | 12 of 12 |
| 2002 | 1,623,738 | Not reported | 12 of 12 |
| 2003 | 1,203,551 | Not reported | 9 of 12 |
| 2004 | 1,105,657 | Not reported | 12 of 12 |
| 2005 | 1,571,567 | Not reported | 12 of 12 |
| 2006 | 1,736,142 | Not reported | 12 of 12 |
| 2007 | 1,448,602 | Not reported | 12 of 12 |
| 2008 | 1,450,886 | Not reported | 12 of 12 |
| 2009 | 632,633 | Not reported | 6 of 12 |
| 2010 | 862,653 | 40.0% | 9 of 12 |
| 2011 | 1,328,263 | 46.4% | 12 of 12 |
| 2012 | 1,068,063 | 37.2% | 12 of 12 |
| 2013 | 1,097,993 | Not reported | 12 of 12 |
| 2014 | 118,119 | 57.3% | 1 of 12 |
| 2015 | 1,327,010 | 54.7% | 12 of 12 |
| 2016 | 904,191 | 37.2% | 12 of 12 |
| 2017 | 1,250,741 | Not reported | 12 of 12 |
| 2018 | 967,818 | Not reported | 10 of 12 |
| 2019 | 1,300,167 | 55.0% | 12 of 12 |
| 2020 | 1,033,960 | 43.6% | 12 of 12 |
| 2021 | 1,338,590 | 56.6% | 12 of 12 |
| 2022 | 1,354,941 | 57.3% | 12 of 12 |
| 2023 | 1,394,752 | 58.9% | 12 of 12 |
| 2024 | 1,206,312 | 50.8% | 12 of 12 |
| 2025 | 1,383,380 | 58.5% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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
647,224
US short tons. 2024: 560,603
SO₂, 2025
3
US short tons
NOx, 2025
162
US short tons
CO₂ per MWh, calculated
0.47 t
About 936 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (7, 8), matched to EIA plant 689 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
68
million gallons
Consumption, 2024
68
million gallons
Source
ST. MARKS RIVER
Surface, Brackish. Induced-draft tower
Watershed stress
Very low/none · 0.116
USGS SUI, HUC12 Moriah Creek-Saint Marks River
12 of 12 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 |
|---|---|---|---|
| 8 | Natural Gas Fired Combined Cycle | 180.0 | July 2000 |
| 9 | Natural Gas Fired Combined Cycle | 90.1 | July 2000 |
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 City of Tallahassee - (FL) 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 S O Purdom
More plants operated by City of Tallahassee - (FL)
Questions about S O Purdom
How much power does S O Purdom produce?
S O Purdom reported 1,383,380 MWh (1.38 TWh) of net generation in 2025, a 58.5% capacity factor on 270.1 MW of nameplate capacity.
Where is S O Purdom?
S O Purdom is in Wakulla County, Florida, at 30.1623, −84.2007. It is in the City of Tallahassee balancing area (TAL).
Who operates S O Purdom?
EIA-860M for August 2026 lists City of Tallahassee - (FL) as the operator (EIA operator ID 18445). The operator is not always the owner.
When did S O Purdom start operating?
Its first generator began operating in July 2000, 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