How big is Covanta Hempstead?

Covanta Hempstead has a reported capacity of 78.6 MW. Source: EIA Form 860M.

What kind of plant is Covanta Hempstead?

Covanta Hempstead is a Municipal Solid Waste facility in Nassau County, NY, participating in the NYISO market.

Where is Covanta Hempstead located?

Covanta Hempstead is in Nassau County, NY, inside the NYISO balancing area.

Who operates Covanta Hempstead?

Covanta Hempstead is operated by Covanta Hempstead Company according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Covanta Hempstead generate?

Covanta Hempstead reported 480 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.

How does Covanta Hempstead compare to other plants?

By capacity, Covanta Hempstead ranks #6 of 55 operating plants of the same technology nationally. It ranks #1 of 10 in NY.

Covanta Hempstead — 79 MW biomass plant, Nassau County, NY

Ask the Grid/

Create free workspace

Ask the Grid

Create free workspace

Covanta Hempstead — 79 MW biomass plant, Nassau County, NY · Ask the Grid

Overview

Nameplate capacity: 78.6 MW
Canonical EIA plant baseline.
Registry anchor: Plant 10642
plant-10642

Infrastructure record

Operator: Covanta Hempstead Company

Structured profile

Technology: Municipal Solid Waste

Related assets

Similar plants ranked by technology, capacity, and distance.

Wheelabrator Westchester

Biomass · 59.5 MW

Westchester County

Same typeComparable scale41 mi away

Compare with this plant

Huntington Resource Recovery Facility

Biomass · 28 MW

Suffolk County

Same type19 mi away

Compare with this plant

Units and generators

Operating generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
GEN1	78.6 MW 71.8 MW summer	Municipal Solid Waste Municipal Solid Waste (All) · ST	Apr 1989	Operating

Performance

Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.

Peer context

Technology capacity: 78.6 MW
National rank: #6
NY rank: #1

Monthly generation

Download CSV

Latest 12 months

480 GWh

Reported net generation

Latest report

Jun 2026

EIA-923 monthly filing

2025 capacity factor

85.3%

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 inventory

MITCHELL GARDENS

IN SERVICE

0.2 km

UNKNOWN129574

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

Permit Modification

Oct 30, 2012

The facility's annual waste-throughput limit of 975,000 tons was converted to a steam-generation limit. The facility-wide NOx emissions cap was reduced from 1,457 tons per year to 1,280 tons per year.

New York State Department of Environmental Conservation · Covanta Hempstead Company

extapps.dec.ny.gov

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

Drag organizations to explore the network. Select a node to pin its details and available page link.

AssetOwner / operatorOfftakerMarket / regulator

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Apr 1989
Apr 1989
Generator enters operationEIA-860
EIA-860 lists generator GEN1 with this operating date.
Oct 30, 2012
Oct 30, 2012
Waste-throughput and emissions-permit modification

Covanta Hempstead