Sioux

OperatingSub. Coal

Ranked #5 of 8 Sub. Coal plants in MO#40 of 103 nationally

1099.4 MW Sub. Coal operating in St Charles, MO — Midcontinent Independent Transmission System Operator, Inc..

EIAWD

1,099.4 MW

Nameplate Capacity

Generators

units

Conventional Steam Coal

Technology

1967

Operating Since

Location

Coordinates

38.9155, -90.2903

County

St Charles, MO

Nearby Plants

Big Creek Solar (IL)
Solar5 MW · 21.6 km
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Macon Energy Center
Natural Gas10 MW · 24.3 km

Ownership & Operator

Owner data does not fully agree across sources.

EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.

Field	EIA	GEM	Wikidata
Operator	Union Electric Co - (MO)	—	Ameren Missouri
Owner(s)	Union Electric Co - (MO)	—	—
Status	Operating	—	—

Ownership Chain

No GEM tracker match for this plant — ownership chain unavailable.

About

Sioux Power Plant is a coal-fired power plant in Missouri.

Read more on Wikipedia

The Sioux power plant is a 1099.4 MW coal-fired generating station located in St. Charles County, Missouri. The plant began operating in 1967 and utilizes conventional steam coal technology with subbituminous coal (SUB) as its primary fuel. It consists of two generating units and is operated by Union Electric Co. (MO). Sioux ranks as the 5th largest power plant in Missouri (out of 6 total plants) and 35th nationally (out of 75 plants).

Sioux operates within the Midcontinent Independent Transmission System Operator, Inc. (MISO) balancing authority and the SERC NERC region. The plant's latest annual generation was 3,986,364 MWh, achieving a capacity factor of 41.6%. Financial data indicates an installed cost of $1298.67 per kW, as reported to FERC.

Generated from EIA, GEM, and public data sources

Wikipedia EIA Plant Profile Wikidata

Engineering & Generators

Grid Context

NERC Region

SERC

Balancing Authority

Midcontinent Independent Transmission System Operator, Inc..

Grid Voltage

138 kV

Regulatory Status

Entity Type

Investor-Owned Utility

Sector

Electric Utility

Generation

323.6K MWh

Latest Month

4.0M MWh

Annual Generation

41.6%

Capacity Factor

Jan 2023 – Dec 2025

Financial DataBeta

Source: FERC Form 1HIGH

$1,456/kW

Installed Cost

$37.7/MWh

Operating Cost

UNION ELECTRIC COMPANY

Reporting Utility

Annual Capital & Operating Expenses

Cumulative Installed Cost

Per-Unit Cost Trends

Pricing & Market Data

HIGH confidence

Market Position

ISO/RTO Market

MISO

LMP Node

AMMO.SIOUX1

Pricing Hub

ILLINOIS.HUB

Location Type

Generation Node

Node Source

EIA-860 direct report

News & Articles (10)Beta

Industry·corporate

Missouri River Energy celebrates 60 years | Sioux Center News

SIOUX CENTER—The city of Sioux Center is celebrating the 60th anniversary of the creation of the Missouri River Energy Services,...

Missouri River Energy Services (operator)

The N'West Iowa REVIEW·3 months ago

Industry·corporate

Deuel County targeted for $378M gas-fired power plant

South Dakota Public Utilities Commission to consider facility near Toronto; community meeting slated for next month.

South Dakota Public Utilities Commission (regulator)

The Dakota Scout·7 months ago

Grid·capacity addition

Missouri Utility Plans New 800-MW Gas-Fired Plant, Will Include Energy Storage

A utility that serves customers in Missouri announced it plans to build an 800-MW natural gas-fired power plant, along with the company's first large-scale...

Missouri (operator)

POWER Magazine·8 months ago