Miami Fort — 1,181 MW hybrid plant, Hamilton County, OH

Miami Fort — 1,181 MW hybrid plant, Hamilton County, OH · Ask the Grid

Generation and physical site

EIA plant 2832 · Inventory for Sep 2026.

Reported operating nameplate by technology

Coal: 1,114.8 MW
Petroleum: 66 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 (8)

EIA generator status and nameplate capacity for Miami Fort
Generator	Technology	Status	Power (MW)	Energy (MWh)
7	Conventional Steam Coal	Operating	557.1	Unknown
8	Conventional Steam Coal	Operating	557.7	Unknown
GT3	Petroleum Liquids	Operating	16.5	Unknown
GT4	Petroleum Liquids	Operating	16.5	Unknown
GT5	Petroleum Liquids	Operating	16.5	Unknown
GT6	Petroleum Liquids	Operating	16.5	Unknown
6	Conventional Steam Coal	Retired	163.2	Unknown
5	Conventional Steam Coal	Retired	100	Unknown

Physical map location · OpenStreetMap: 39.11457, -84.80335
Filed location · EIA: 39.11280, -84.80360

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: Jun 19, 2024
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
7	557.1 MW 510 MW summer	Conventional Steam Coal ST	May 1975	Operating
8	557.7 MW 510 MW summer	Conventional Steam Coal ST	Feb 1978	Operating
GT3	16.5 MW 14 MW summer	Petroleum Liquids GT	Jul 1971	Operating
GT4	16.5 MW 14 MW summer	Petroleum Liquids GT	Aug 1971	Operating
GT5	16.5 MW 14 MW summer	Petroleum Liquids GT	Sep 1971	Operating
GT6	16.5 MW 14 MW summer	Petroleum Liquids GT	Oct 1971	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.

Transactions and agreements

Acquisition Agreement Signed

Apr 2017

Asset Purchase Agreement: Dynegy Miami Fort, LLC and Dynegy Zimmer, LLC agreed to acquire 36% undivided interest in Miami Fort Units 7 and 8 (approximately 740 MW combined with Zimmer) plus Zimmer interest for $50 million base cash purchase price plus assumed liabilities. Amount not allocated between Miami Fort and Zimmer.

$50.0M740 MW contractedAES Ohio Generation, LLC · The Dayton Power and Light Company · Dynegy Zimmer, LLC · Dynegy Miami Fort, LLC

Asset Purchase Agreement among AES Ohio Generation, LLC, The | DYNEGY INC. | Business Contracts | Justia

Land and environmental record

Air Compliance And Retirement Order

Jan 1, 2028

Ohio EPA ordered permanent shutdown of coal-burning activities at emission units B015 and B016 (Miami Fort Units 7 and 8) no later than January 1, 2028.

2021 Ohio EPA Director's Final Findings and Orders identify units and impose shutdown deadline. Order followed owner's announced retirement plan for year-end 2027.

AppC_DFFOs for Miami Fort_Zimmer shutdown - final_.pdf

Offsite Ash Landfill And Remediation

Dec 28, 2023

Former Miamiview Road Ash Landfill: separate Miami Fort-associated waste site at 10414 Miamiview Drive, parcel 57002800001, identified as 130-acre property with approximately 70 acres used for ash disposal. Current owner: Duke Energy Miami Fort LLC.

Hamilton County health assessment states landfill accepted fly ash and bottom ash solely from Miami Fort, operated 1983–1997. Not the plant's main station parcel. Groundwater sampling 1983–1987 below drinking-water standards. Site inspection December 28, 2023 reported no violations or nuisance conditions.

Source

Mapped facility footprint

Mapped infrastructure geometry associated with this asset.© OpenStreetMap contributors · way/28534040

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Jul 1971
Jul 1971
Generator enters operationEIA-860
EIA-860 lists generator GT3 with this operating date.
Aug 1971
Aug 1971
Generator enters operationEIA-860
EIA-860 lists generator GT4 with this operating date.
Sep 1971
Sep 1971
Generator enters operationEIA-860
EIA-860 lists generator GT5 with this operating date.
View 4 more milestonesHide 4 milestones
1. Oct 1971
  Oct 1971
  Generator enters operationEIA-860
  EIA-860 lists generator GT6 with this operating date.
2. May 1975
  May 1975
Apr 21, 2017
Apr 21, 2017
DP&L-Dynegy Miami Fort interest agreementSource
DP&L and AES Ohio Generation entered into an asset purchase agreement with Dynegy Miami Fort LLC for DP&L’s 36% undivided interest in Miami Fort Units 7 and 8, as part of a combined Zimmer and Miami Fort transaction.
Dec 8, 2017
Dec 8, 2017
Dynegy acquired remaining DP&L interestDynegy Clos...
Dynegy closed its $50 million purchase from DPL Inc. of a 36% Miami Fort interest and a 28.1% Zimmer interest, making Dynegy the sole owner of both Ohio coal facilities.
Apr 9, 2018
Apr 9, 2018
Vistra-Dynegy Merger CompletedVistra Ener...
Vistra Energy completed its merger with Dynegy; Vistra became the name of the combined company.

Sources

PublisherReferenceType

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

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

eia.govPowerPlantsAllGE100MWregulatory

Common questions about Miami Fort

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

How big is Miami Fort?

Miami Fort reports 1,114.8 MW coal + 66 MW petroleum of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.

What kind of plant is Miami Fort?

Miami Fort is a Petroleum Liquids, Conventional Steam Coal facility in Hamilton County, OH, participating in the PJM market.

Where is Miami Fort located?

Miami Fort is in Hamilton County, OH, inside the PJM balancing area.

Who operates Miami Fort?

Miami Fort is operated by Luminant Miami Fort according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Miami Fort generate?

Miami Fort reported 6,555.9 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.

Where does Miami Fort connect to the grid?

Miami Fort interconnects at Miami Fort Substation, on the Duke Energy system.

How does Miami Fort compare to other plants?

By capacity, Miami Fort ranks #71 of 205 operating plants of the same technology nationally. It ranks #3 of 7 in OH.

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.

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Overview

Overview

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Structured profile

Generation and physical site

Reported operating nameplate by technology

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Performance

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Monthly generation

Grid and market context

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