J Lamar Stall Unit
Natural gas power plant in Caddo Parish, Louisiana. 624 MW of nameplate capacity across 3 generators, operated by Southwestern Electric Power Co.
Also known as EIA plant 56565
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 624 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- June 2010First generator online
- Operator
- Southwestern Electric Power CoEIA operator ID 17698
- Grid
- SPPBalancing authority SWPP
- Price nodes
- 1 SPP nodeResource nodes with prices
- Location
- Caddo Parish, LA32.5195, −93.7601
- EIA plant ID
- 56565EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power J Lamar Stall Unit produces
Free · EIA-923Net generation, 2025
3.33 TWh
3,330,880 MWh, final
Capacity factor, 2025
60.9%
2024: 61.1%
January to July 2026
1.87 TWh
Provisional
Range, 2015 to 2025
2.5–3.6
TWh a year. Low 2019, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | 1,358,641 | Not reported | 7 of 12 |
| 2011 | 3,001,247 | 54.9% | 12 of 12 |
| 2012 | 3,552,982 | 64.8% | 12 of 12 |
| 2013 | 2,924,587 | Not reported | 12 of 12 |
| 2014 | 3,302,550 | 60.4% | 12 of 12 |
| 2015 | 3,588,706 | 65.7% | 12 of 12 |
| 2016 | 3,559,317 | 64.9% | 12 of 12 |
| 2017 | 2,885,455 | 52.8% | 12 of 12 |
| 2018 | 2,677,131 | 49.0% | 12 of 12 |
| 2019 | 2,529,547 | 46.3% | 12 of 12 |
| 2020 | 3,473,383 | 63.4% | 12 of 12 |
| 2021 | 2,768,717 | 50.7% | 12 of 12 |
| 2022 | 3,121,630 | 57.1% | 12 of 12 |
| 2023 | 3,452,782 | 63.2% | 12 of 12 |
| 2024 | 3,348,706 | 61.1% | 12 of 12 |
| 2025 | 3,330,880 | 60.9% | 12 of 12 |
| 2026 (provisional, partial year) | 1,866,588 | 58.8% | 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 account · SPPEmissions
Free · EPA CAMPDCO₂, 2025
1.42M
US short tons. 2024: 1.35M
SO₂, 2025
7
US short tons
NOx, 2025
140
US short tons
CO₂ per MWh, calculated
0.43 t
About 854 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (CTG-6A, CTG-6B), matched to EIA plant 56565 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
1,019
million gallons
Consumption, 2024
572
million gallons
Source
Cross Bayou
Surface, Fresh. Induced-draft tower
Watershed stress
Low · 0.279
USGS SUI, HUC12 Cross Lake-Cross Bayou
12 of 12 cooling months report withdrawal. SUI of the HUC12 containing the plant. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 6A | Natural Gas Fired Combined Cycle | 184.0 | June 2010 |
| 6B | Natural Gas Fired Combined Cycle | 184.0 | June 2010 |
| 6STG | Natural Gas Fired Combined Cycle | 256.0 | June 2010 |
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 Southwestern Electric 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 J Lamar Stall Unit
More plants operated by Southwestern Electric Power Co
Questions about J Lamar Stall Unit
How much power does J Lamar Stall Unit produce?
J Lamar Stall Unit reported 3,330,880 MWh (3.33 TWh) of net generation in 2025, a 60.9% capacity factor on 624 MW of nameplate capacity. From January to July 2026 it reported 1.87 TWh, which is provisional.
Where is J Lamar Stall Unit?
J Lamar Stall Unit is in Caddo Parish, Louisiana, at 32.5195, −93.7601. It is in the Southwest Power Pool balancing area (SWPP).
Who operates J Lamar Stall Unit?
EIA-860M for August 2026 lists Southwestern Electric Power Co as the operator (EIA operator ID 17698). The operator is not always the owner.
When did J Lamar Stall Unit start operating?
Its first generator began operating in June 2010, according to EIA-860M.
Does InfraMap have power prices for J Lamar Stall Unit?
Yes. InfraMap has SPP day-ahead and real-time prices at 1 price node linked to J Lamar Stall Unit, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
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
- SPP day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- 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
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page