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78.6 MW Muni. Waste operating in Nassau, NY — New York Independent System Operator
78.6 MW
Nameplate Capacity
1
Generators
unit
Municipal Solid Waste
Technology
1989
Operating Since
Coordinates
40.7389, -73.5906
County
Nassau, NY
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Covanta Hempstead Company | Covanta Hempstead | — |
| Owner(s) | Covanta Hempstead Company | EQT | — |
| Status | Operating | operating | — |
Reworld Hempstead, formerly Covanta Hempstead, is a waste-to-energy plant in Uniondale, New York operated by Reworld. It is the tallest structure in Nassau County, and the fourth largest power generation facility on Long Island by net energy generated.
Read more on WikipediaCovanta Hempstead is a 78.6 MW waste-to-energy power plant located in Nassau County, New York. The plant, which began operating in 1989, utilizes municipal solid waste (MSW) as its primary fuel source. It has one generator. The facility is owned by EQT, a company based in Sweden, and operated by Covanta Hempstead Company. Covanta Hempstead is connected to the New York Independent System Operator (NYISO) grid and falls within the North American Electric Reliability Corporation (NERC) NPCC region.
In the most recent year of data, Covanta Hempstead generated 587,403 MWh of electricity, achieving a capacity factor of 85.3%. The plant is ranked as the largest of 10 waste-to-energy facilities in New York state, and the sixth largest of 56 such facilities 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
49.3K MWh
Latest Month
587.4K MWh
Annual Generation
85.3%
Capacity Factor
CO₂ Intensity
2036 lb/MWh
NOx
4 lb/MWh
SO₂
2013
$3,495/kW
Est. Construction Cost
Total estimated cost: $274.7M
Point of Interconnection
Nearest Substation
ELEC_TRO_TEK
Substation Distance
< 10 km
Coord Source
NYISO direct
Market Position
ISO/RTO Market
NYISO
LMP Node
—
Pricing Hub
NYISO Zone K
Node Source
Shared substation inference
Substation identified. Node ID not yet resolved against ISO roster.
Last updated 2026-03-26
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ask pi about Covanta HempsteadNew York Independent System Operator (NYIS)
Grid Voltage
69.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
Commercial Non-CHP
3 lb/MWh
CH₄
1 lb/MWh
N₂O
0.171 lb/MWh
Capacity Factor
72.5%
Annual Net Gen
499 GWh
CO₂eq
2118 lb/MWh
Subregion
NPCC Long Island