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Meramec — Power plant · Coal · Union Electric Co - (MO)Castle Bluff Energy Center — Announced · Gas, combustion turbine · MO · 648 MW · 0.0 mi away
  • Combustion
  • In development
  • Retired
  • 10 · 100 · 1,000 MW

Meramec

Power plant · Coal

Key facts

Power plant · Coalran 2% of 2022 Retired
Capacity
Capacity: sourceEIA-860M · Open licenseMW
Commissioned
1953
Net generation, 2022
214,257 MWh
Grid
138 kV to Union Electric Co - (MO) (MISO)
Location
St Louis County, Missouri

Output

Net generation MWh by year, 2001 to 2023
Fuel burned MMBtu by year, 2001 to 2023
  • Gas
  • Coal
  • Oil

Operations detail

Details

Who’s behind it

Owner
Ameren Corp

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Technology
Coal source: “Conventional Steam Coal”
Age
73 years since 1953
All 2 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
AttributeValue
EPA greenhouse gas reporting (GHGRP)
EPA FRS ID
110001958515
Subparts reported
C, D
NAICS code
221112
Subpart PP (CO2 supply)
No
Subpart RR (geologic sequestration)
No
Subpart UU (CO2 injection)
No
Reporting year
2023
GHGRP facility ID
1000707
Balancing authority codeMISO

Retirement

EIA-860M September 2026StatusEvery generator EIA lists at this plant has retired. As of EIA-860M for September 2026.
Retired
December 2022
Capacity retired
1,041 MW
Generators retired
6
GeneratorTechnologyNameplateStateDate
1Natural Gas Steam Turbine137.5 MWRetiredDecember 2022
2Natural Gas Steam Turbine137.5 MWRetiredDecember 2022
3Conventional Steam Coal289 MWRetiredDecember 2022
4Conventional Steam Coal359 MWRetiredDecember 2022
GT1Petroleum Liquids62 MWRetiredDecember 2022
GT2Natural Gas Fired Combustion Turbine56 MWRetiredDecember 2022
By technology
TechnologyRetiredScheduled to retire
Conventional Steam Coal648 MW
Natural Gas Steam Turbine275 MW
Petroleum Liquids62 MW
Natural Gas Fired Combustion Turbine56 MW

Grid

EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).
Grid voltage at the plant
138 kV
Transmission or distribution system owner
Union Electric Co - (MO)
Balancing authority
Midcontinent Independent Transmission System Operator, Inc..
NERC region
SERC
Transmission lines within 15 mi (10)
Can the connection be reused?

A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.

Ownership

2 companies2
CompanyRoleShareAs ofSource
Union Electric Co - (MO) Operator EIA-860M
AMEREN CORP Owner 100.0% Dec 31, 2023 EPA GHGRP

Timeline

  • Stated Units 1, 2, 3, 4, GT1, GT2 scheduled to retire, 1,041 MW · EIA-860M
  • In service · EIA-860M

Sources

5 sources

Sources EIA-860M · LBNL · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)

Sources

Every source and license · Attribution

View at source

Around this plant

Nearby

within 15 mi
ProjectKindAwayMW
Castle Bluff Energy Center Announced Gas, combustion turbine 0.0 mi 648

Sources EIA-860M

Sources

  • EIA-860MOpen license · retrieved Nov 4, 2026

Attribution