Allegheny Hydro No 9 — Plant Summary
- EIA Plant ID
- 50898
- Capacity
- 17.8 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Armstrong, PA
- Operating Since
- 1990
- Generators
- 2
- Operator
- Allegheny Hydro LP
- Parent Company
- —
- Annual Generation
- 88,164 MWh
- Capacity Factor
- 55.8%
- Balancing Authority
- PJM Interconnection, LLC
- ISO/RTO
- PJM
- NERC Region
- RFC
Allegheny Hydro No 9
OperatingHydro
Ranked #13 of 28 Hydro plants in PA#507 of 1454 nationally
17.8 MW Hydro operating in Armstrong, PA — PJM Interconnection, LLC
EIAWD
17.8 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1990
Operating Since
Location
Coordinates
40.9560, -79.5504
County
Armstrong, PA
Nearby Plants
- Allegheny Hydro No 8Hydro13.6 MW · 8.9 km
- Mahoning Creek Hydroelectric ProjectHydro6 MW · 22.9 km
- Allegheny No 6 Hydro StationHydro9.2 MW · 26.8 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Allegheny Hydro LP | — | — |
| Owner(s) | Allegheny Hydro LP | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Allegheny Hydro No 9 is a 17.8 MW hydroelectric power plant located in Armstrong County, Pennsylvania. The plant began operating in 1990 and utilizes conventional hydroelectric technology. It has two generators and is owned and operated by Allegheny Hydro LP. The plant's primary fuel source is water (WAT).
In the most recent year of reported data, Allegheny Hydro No 9 generated 88,164 MWh of electricity, achieving a capacity factor of 55.8%. The plant operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. It is ranked as the 13th largest hydroelectric plant out of 28 in Pennsylvania, and 516th out of 1464 nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
11.1K MWh
Latest Month
88.2K MWh
Annual Generation
55.8%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
PJM
LMP Node
—
Pricing Hub
WESTERN HUB
Node Source
OSM spatial match
Cowansville SubstationSubstation
News & Articles (2)Beta
Industry·corporate
Are We Heading for a Hydropower Boom on the Three Rivers?
A Boston-based company proposing to build a hydropower plant at Emsworth and nine other dams in western Pennsylvania and West Virginia.
Boston (developer)
The Allegheny Front·8 years ago
Deals·m and a
PSP-owned H2O Power buys Pennsylvania hydroelectric facilities
H2O Power LP, a North American hydro platform, has bought two run-of-river hydroelectric facilities based in Pennsylvania. No financial terms were released.
H2O Power LP (buyer)PSP (other)
pehub.com·10 years ago
Last updated 2026-03-14
View all articles