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1 MW Hydro operating in St Lawrence, NY — New York Independent System Operator
1 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1987
Operating Since
Coordinates
44.2965, -75.3362
County
St Lawrence, NY
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Ampersand Hollow Dam Hydro LLC | — | — |
| Owner(s) | Ampersand Hollow Dam Hydro LLC | — | — |
| Status | Operating | — | — |
Hollow Dam Power Partnership is a 1 MW hydroelectric power plant located in St. Lawrence County, New York. The plant began operating in 1987 and consists of two generators utilizing conventional hydroelectric technology. The primary fuel source is water (WAT). Ampersand Hollow Dam Hydro LLC is the current operator of the facility.
The plant's latest annual generation was 1,592 MWh, resulting in a capacity factor of 18.2%. Hollow Dam Power Partnership operates within the New York Independent System Operator (NYISO) balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. In terms of size, the plant ranks 161 out of 165 power plants in New York and 1460 out of 1464 nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
NYISO
Market
ISO/RTO Member
NERC Region
NPCC — Northeast Power Coordinating Council
Balancing Authority
0 MWh
Latest Month
1.6K MWh
Annual Generation
18.2%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $2.3M
Market Position
ISO/RTO Market
NYISO
LMP Node
—
Pricing Hub
NYISO Zone D
Node Source
Plant coordinates only
Last updated 2026-03-21
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ask pi about Hollow Dam Power PartnershipNew York Independent System Operator (NYIS)
Grid Voltage
2.4 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP