Hanging Rock Energy Facility
Lawrence County
Overview
- Reported capacity
- 1,429.8 MW
- EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
- Technology
- Natural Gas Fired Combined Cycle
- Primary generation technology.
- Registry anchor
- Plant 55736
- Lawrence County · PJM
- Operating status
- Operating
- Hanging Rock Energy Facility is operating.
Infrastructure record
- Operator
- Dynegy Hanging Rock Energy Facility
- Mapped facility footprint
- Mapped infrastructure footprint
Mapped infrastructure geometry associated with this asset.
- In service
- 2003
Profile
- Grid role
- PJM generation-capacity resource using combined-cycle gas generation; the available records do not establish a baseload or peaking designation.
- Physical build
- Four General Electric PG7241 FA/7FA gas-turbine generators rated at 155 MW each, four heat-recovery steam generators, and two General Electric D11 steam-turbine generators. EIA plant records identify six operating generating units totaling 1,429.8 MW.
Structured profile
- Reported capacity
- 1,429.8 MW
Natural Gas Fired Combined Cycle
- Operating status
- operating
Hanging Rock Energy Facility is operating.
- Location
- Lawrence County
PJM
- Asset role
- natural gas
PJM · Lawrence County
Generation and physical site
EIA plant 55736 · Inventory for Sep 2026.
Reported operating nameplate by technology
- Natural gas
- 1,429.8 MW
Generator records (6)
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 1GT1 | Natural Gas Fired Combined Cycle | Operating | 198.9 | Unknown |
| 1GT2 | Natural Gas Fired Combined Cycle | Operating | 198.9 | Unknown |
| 1ST | Natural Gas Fired Combined Cycle | Operating | 317.1 | Unknown |
| 2GT1 | Natural Gas Fired Combined Cycle | Operating | 198.9 | Unknown |
| 2GT2 |
Related assets
Similar plants ranked by technology, capacity, and distance.
Units and generators
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1GT1 | 198.9 MW 181 MW summer | Natural Gas Fired Combined Cycle CT | Jun 2003 | Operating |
| 1GT2 | 198.9 MW 183 MW summer | Natural Gas Fired Combined Cycle CT | Jun 2003 | Operating |
| 1ST | 317.1 MW 316 MW summer | Natural Gas Fired Combined Cycle CA | Jun 2003 | Operating |
| 2GT1 | 198.9 MW 185 MW summer | Natural Gas Fired Combined Cycle CT | Jul 2003 | Operating |
| 2GT2 | 198.9 MW | |||
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 1,429.8 MW
- Natural Gas Fired Combined Cycle
- National rank
- #27
- of 540 operating peers
- OH rank
- #2
- of 15 operating peers
Monthly generation
Download CSVLatest 12 months
9.95 TWh
Reported net generation
Latest report
Jul 2026
EIA-923 monthly filing
2025 capacity factor
81.5%
Using current reported nameplate capacity
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Nearby substations
HIFLD infrastructure inventoryIN SERVICE · 765 kV
0.1 km
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
EPC Award
Apr 15, 2002
Duke/Fluor Daniel awarded turnkey engineering, procurement, and construction contract for 1,240 MW facility. Contract value not disclosed; 1,240 MW is facility capacity, not contracted capacity. Commercial operation scheduled for summer 2003.
Duke Energy North America · Fluor Daniel
Land and environmental record
Emissions Control
Dry low-NOx combustors
Fluor identifies dry low-NOx combustors as turbine-exhaust emissions control technology for the facility.
Environmental Compliance Milestone
Oct 1, 2025
NPDES special conditions cover stormwater compliance, mercury tracking, Clean Water Act Section 316(b), PCBs, cooling-water additives, and outfall signage
Requirements expressly included in Part II of renewed Ohio EPA permit.
Environmental Permit
Oct 1, 2025
Ohio EPA NPDES Permit No. 0IB00032*HD; Application No. OH0127931
Final permit issued September 3, 2025; effective October 1, 2025; expires September 30, 2030.
Land Area Scope
Jan 31, 2002
Plant-site acreage not established. 2002 FERC notice reported 146.9 acres for Hanging Rock Lateral natural-gas pipeline construction, not generating-plant footprint.
146.9 acres includes pipeline construction right-of-way, work spaces, access roads, and pipeyards. Must not be treated as plant's parcel acreage.
Reported Emissions
2023
EPA Greenhouse Gas Reporting Program: 4,157,061.7 tCO2e for reporting year 2023
EPA GHG report identifies Hanging Rock Power Company LLC, plant code 55736, total facility CO2-equivalent emissions from listed facility subparts.
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
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AssetOwner / operatorContractorEquipmentOrganizationMarket / regulator
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Construction BeganSource
Construction of Hanging Rock began before the plant entered commercial service.