110 MW Distillate Oil operating in Nassau, NY — New York Independent System Operator
110 MW
Nameplate Capacity
2
Generators
units
Petroleum Liquids
Technology
1972
Operating Since
Coordinates
40.8261, -73.6475
County
Nassau, NY
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | National Grid Generation LLC | National Grid Generation | — |
| Owner(s) | National Grid Generation LLC | National Grid | — |
| Status | Operating | — | — |
Glenwood is a 110 MW petroleum-fueled power plant located in Nassau County, New York. The plant began operating in 1972 and has two generators utilizing petroleum liquids technology. It is owned by National Grid, a company based in the United Kingdom, and operated by National Grid Generation LLC. The plant operates within the New York Independent System Operator (NYISO) balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region.
In the most recent year with available data, Glenwood generated 2,566 MWh, resulting in a capacity factor of 0.3%. Financial data indicates an installed cost of $201.07 per kW, based on FERC filings. Glenwood is ranked as the 3rd largest petroleum plant in New York, and 60th nationally among plants using the same fuel.
Generated from EIA, GEM, and public data sources
NERC Region
NPCC
Balancing Authority
New York Independent System Operator
Grid Voltage
69 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
14 MWh
Latest Month
2.6K MWh
Annual Generation
0.3%
Capacity Factor
$240/kW
Installed Cost
$107.5/MWh
Operating Cost
National Grid Generation LLC
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Point of Interconnection
Nearest Substation
GLENWOOD_IC_2_G1
Substation Distance
< 10 km
Coord Source
NYISO direct
Market Position
ISO/RTO Market
NYISO
LMP Node
23688
Pricing Hub
NYISO Zone K
Node Source
EIA-860 direct report
Last updated 2026-03-26
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