St. Mary Clean Energy Center — Plant Summary
- EIA Plant ID
- 60610
- Capacity
- 50.9 MW
- Primary Fuel
- WH
- Technology
- All Other
- Status
- Operating
- Location
- St Mary, LA
- Operating Since
- 2019
- Generators
- 1
- Operator
- Cleco Power LLC
- Parent Company
- Cleco Corporate Holdings
- Annual Generation
- 201,188.01 MWh
- Capacity Factor
- 45.0%
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- SERC
St. Mary Clean Energy Center
OperatingWaste Heat
Ranked #1 of 7 Waste Heat plants in LA#6 of 33 nationally
50.9 MW Waste Heat operating in St Mary, LA — Midcontinent Independent Transmission System Operator, Inc..
EIAWD
50.9 MW
Nameplate Capacity
1
Generators
unit
All Other
Technology
2019
Operating Since
Location
Coordinates
29.6853, -91.4730
County
St Mary, LA
Nearby Plants
- Neptune Gas Processing PlantOther4.5 MW · 6.1 km
- TecheNatural Gas42.2 MW · 16.6 km
- LEPA Unit No. 1Natural Gas74.1 MW · 27.1 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Cleco Power LLC | Cleco Power | — |
| Owner(s) | Cleco Power LLC | Cleco Corporate Holdings | — |
| Status | Operating | — | — |
Ownership Chain
About
The St. Mary Clean Energy Center is a 50.9 MW power plant located in St. Mary County, Louisiana. The facility, which began operating in 2019, utilizes waste heat (WH) as its primary fuel source and is operated by Cleco Power LLC, a subsidiary of Cleco Corporate Holdings. It has one generator employing "All Other" technology. The plant is within the Midcontinent Independent Transmission System Operator, Inc. (MISO) balancing authority and the SERC NERC region. St. Mary Clean Energy Center is ranked as the largest of six waste heat plants in Louisiana and the sixth largest of 31 such plants nationally.
In its most recent year of operation, the plant generated 201,188 MWh of electricity, achieving a capacity factor of 45.0%. Financial data indicates an installed cost of $2611.75 per kW. The power plant also has a PPA price of $7.5 per MWh.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
SERC
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
34.5 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
17.9K MWh
Latest Month
201.2K MWh
Annual Generation
45.0%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Form 1, FERC Electric Quarterly ReportsHIGH
$7.5/MWh
PPA Price
Cleco Power LLC
Contract Seller
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
MISO
LMP Node
—
Pricing Hub
LOUISIANA.HUB
Node Source
OSM spatial match
News & Articles (2)Beta
Industry·corporate
Cleco announces plans for solar farm at closed DeSoto lignite power plant
Cleco has announced plans to help bring one of the largest solar facilities in Louisiana to De Soto Parish through a partnership with a New York-based energy...
Cleco (developer)New York-based energy (partner)
KTALnews.com·3 years ago
Deals·ppa
Cleco Power and DESRI Announce 240 MWac Solar Power Agreement
PRNewswire/ -- Cleco Power (Cleco) and D.E. Shaw Renewable Investments (DESRI), a leading renewable energy producer in the U.S.,...
Cleco Power (buyer)D.E. Shaw Renewable Investments (seller)
PR Newswire·3 years ago
Last updated 2026-03-14
View all articles