Mountaineer — 1,300 MW coal plant, Mason County, WV

Mountaineer — 1,300 MW coal plant, Mason County, WV · Ask the Grid

Generation and physical site

EIA plant 6264 · Inventory for Sep 2026.

Reported operating nameplate by technology

Coal: 1,300 MW

Operating generators only. Battery power is in MW; stored energy is in MWh. These ratings do not establish a shared export limit.

Generator records (1)

EIA generator status and nameplate capacity for Mountaineer
Generator	Technology	Status	Power (MW)	Energy (MWh)
1	Conventional Steam Coal	Operating	1,300	Unknown

Physical map location · OpenStreetMap: 38.97849, -81.93595
Filed location · EIA: 38.97940, -81.93440

Sources and observation dates

Inventory source: EIA-860M workbook (preliminary)
EIA reporting month: Sep 2026
EIA retrieved: Oct 24, 2026
OSM extract: Oct 9, 2026
OSM last mapped edit: Aug 9, 2022
Map prepared: Oct 24, 2026
Field verification: Not reported

Reporting month describes the inventory. Retrieval and map preparation describe processing; an OSM edit does not establish an in-service date.

EIA source inventory

Units and generators

Current generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
1	1,300 MW 1,299 MW summer	Conventional Steam Coal ST	Sep 1980	Operating

Commercial, land, and environmental record

Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.

Financing

Financing Authorization

Sep 2, 2025

West Virginia PSC approved Appalachian Power's use of securitization and authorized securitization of the company's West Virginia share of undepreciated Amos, Mountaineer, and Mitchell plant balances. Source does not allocate separate dollar amount to Mountaineer.

Appalachian Power Company · Public Service Commission of West Virginia

Securitization proposal approved by the PSC of West Virginia, leading to lower customer rates in the future

Financial Close And Debt Issuance

May 27, 2026

Appalachian Power Recovery Funding LLC issued $1.3755 billion of Series 2026-A Senior Secured SAC Bonds. Financing includes approximately $1.2 billion of combined Virginia-jurisdictional undepreciated Amos and Mountaineer plant balances, plus storm-restoration and financing costs; no separate Mountaineer allocation disclosed. Three tranches mature 2037, 2042, 2048. APCo acted as seller, sponsor, servicer.

$1.4BAppalachian Power Recovery Funding LLC · Appalachian Power Company · U.S. Bank Trust Company, National Association · U.S. Bank National Association

8-K

Transactions and agreements

Pilot Project Cost Share

Date not disclosed

Mountaineer carbon-capture pilot's initial phases received a $7.2 million contribution from U.S. Department of Energy's Office of Fossil Energy; Alstom and AEP contributed $1.4 million. Source does not provide exact agreement date.

$7.2MU.S. Department of Energy · Alstom · American Electric Power

Carbon Capture and Sequestration Technologies @ MIT

DOE Grant Award

Dec 4, 2009

DOE selected the Mountaineer Carbon Dioxide Capture and Storage Demonstration for up to $334 million in DOE funding under CCPI. Project designed to capture CO2 from a 235-MW flue-gas stream at the existing 1,300-MW Mountaineer plant. Specified 10-year project duration. Later terminated after Phase 1.

$334.0M235 MW contracted10 yearsU.S. Department of Energy · American Electric Power

Secretary Chu Announces $3 Billion Investment for Carbon Capture and Sequestration | Department of Energy

Land and environmental record

Air Permit

Jan 1, 2023

Permit No. Acid Rain Permit R33-6264-2027-6

West Virginia DEP Acid Rain permit identifies Mountaineer Power Station, Permit R33-6264-2027-6, operator Appalachian Power Company, ORIS Code 6264, Unit 1, effective January 1, 2023 through December 31, 2027.

Pre-R33-6264-2022-6_Mountaineer_DraftProposed

Coal Ash Waste Management

Apr 2022

Two CCR surface impoundments and one CCR landfill

Facility's CCR Fugitive Dust Control Plan identifies two CCR surface impoundments and one CCR landfill. Little Broad Run Residual Waste Landfill receives gypsum, fly ash, and bottom ash. Bottom ash is wet-sluiced to the bottom-ash-pond complex.

Source

Emissions Controls

Flue-gas scrubbers (98% SO2 reduction) and selective catalytic reduction (SCR) (up to 90% NOx reduction)

Appalachian Power reports that its environmental-control program installed scrubbers and SCR equipment for Mountaineer. Scrubbers reduce sulfur-dioxide emissions by 98%; SCRs reduce nitrogen-oxide emissions by as much as 90%.

APPALACHIAN POWER, WHEELING POWER SEEK THIRD YEAR PHASE-IN OF COAL COSTS; INCREASE TO BE ABOUT 25¢ A DAY FOR RESIDENTIAL CUSTOMERS

Environmental Compliance Milestone

2018

CCR location restrictions satisfied; continued monitoring and bottom-ash-pond closure planning

AEP reports that both CCR storage sites met the CCR rule's location restrictions. Groundwater sampling to continue twice annually. Company stated it would develop a plan to stop placing material in the bottom-ash pond and close the site.

Mountaineer Plant

Groundwater Compliance

Sep 2019

Lithium groundwater impact associated with the bottom-ash pond; mitigation planning required

AEP's September 2019 groundwater report states that lithium in groundwater within the plant site rose above EPA standards near the bottom-ash pond. No impacts found from the landfill. Appalachian Power would develop a mitigation plan.

Mountaineer Plant

Mapped facility footprint

Mapped infrastructure geometry associated with this asset.© OpenStreetMap contributors · way/186792675

Related parties and identifiers

Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.

Relationship graph

Drag organizations to explore the network. Select a node to pin its details and available page link.

AssetOwner / operatorEquipmentFinancierOrganizationMarket / regulator

Parties and identifiers

OrganizationRoleBasis

Appalachian Power CompanyOperatorOwner / developer associated with Mountaineer.

AlstomEquipment OEMAlstom partnered with AEP on the 2009 Mountaineer demonstration and supplied the chilled-ammonia CO2-capture technology.

Reporting portfolio

EIA reporting entity

Appalachian Power Co

Entity 733

Operating portfolio

16 plants

4 states

Reported capacity

6,863 MW

Conventional Hydroelectric · Conventional Steam Coal · Hydroelectric Pumped Storage

Largest reported plants in this portfolio
Largest reported plants	Capacity	State
John E Amos	2,932.6 MW	WV
MountaineerCurrent	1,300 MW	WV
Dresden Energy Facility	678.3 MW	OH
Smith Mountain	547.5 MW	VA
Ceredo Generating Station	519 MW	WV
Clinch River	475 MW	VA

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

1980
1980
Construction and commercial operationFederal Reg...
The regulatory project description records Mountaineer beginning commercial operation in 1980 as a nominally rated 1,300-MWe pulverized-coal generating unit. A plant-level construction start date is not stated in the cited records.
Sep 1980
Sep 1980
Generator enters operationEIA-860
EIA-860 lists generator 1 with this operating date.
Oct 30, 2009
Oct 30, 2009
CCS pilot construction and commissioningAEP and Als...
AEP and Alstom formally commissioned a chilled-ammonia carbon-capture and storage demonstration at Mountaineer; the pilot was designed to capture and store approximately 100,000 tonnes of CO2 annually.
View 1 more milestoneHide 1 milestone
1. Jun 2010
  Jun 2010
  Proposed CCS expansion and DOE assistanceFederal Reg...
  DOE's Mountaineer CCS II proposal contemplated a 235-MWe flue-gas slipstream system capturing approximately 1.5 million metric tonnes of CO2 annually. DOE proposed up to $334 million in cost-shared assistance, approximately half of estimated development cost.
Jul 7, 2011
Jul 7, 2011
CCS Expansion TerminationFederal Reg...
AEP notified DOE that it intended to terminate the CCS II cooperative agreement at the end of Phase I, citing unfavorable economic conditions and regulatory uncertainty.
Jan 24, 2012
Jan 24, 2012
CCS EIS CancellationFederal Reg...
DOE published notice cancelling the environmental impact statement for the proposed Mountaineer commercial-scale CCS project after AEP's Phase I termination decision.
Feb 11, 2026
Feb 11, 2026
Planned ModernizationEnergy Depa...
DOE announced that Appalachian Power would upgrade the Mountaineer Power Plant in Letart, West Virginia, as part of a broader program for coal-plant modernization. The announcement does not establish completion or repowering.

Sources

PublisherReferenceType

U.S. Energy Information AdministrationEIA-860 generator inventoryFederal registry

U.S. Energy Information AdministrationEIA-923 generation filingsFederal filing

downloads.regulations.govForm EIA-923, "Power Plant Operations Report" 2010regulatory

Common questions about Mountaineer

Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.

How big is Mountaineer?

Mountaineer reports 1,300 MW coal of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.

What kind of plant is Mountaineer?

Mountaineer is a Conventional Steam Coal facility in Mason County, WV, participating in the PJM market.

Where is Mountaineer located?

Mountaineer is in Mason County, WV, inside the PJM balancing area.

Who operates Mountaineer?

Mountaineer is operated by Appalachian Power Co according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

When did Mountaineer start operating?

Mountaineer reports a commercial operation date of 1980. Current status: operating. Source: EIA Sep 2026.

How much electricity does Mountaineer generate?

Mountaineer reported 6,991.6 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.

Where does Mountaineer connect to the grid?

Mountaineer on the Appalachian Power Company system.

How does Mountaineer compare to other plants?

By capacity, Mountaineer ranks #57 of 205 operating plants of the same technology nationally. It ranks #6 of 9 in WV.

Co-located assets

Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.

RacineConventional HydroelectricConventional Hydroelectric47 MW7.4 km BHER Ravenswood Solar 1Batteries, Solar PhotovoltaicBatteries, Solar Photovoltaic192 MW12 km Great Bend Solar ProjectSolar PhotovoltaicSolar Photovoltaic48 MW15 km Gavin Power, LLCConventional Steam CoalConventional Steam Coal · same type

Overview

Overview

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Structured profile

Generation and physical site

Reported operating nameplate by technology

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