Covanta Hempstead
Reworld Waste, LLC - Nassau County - NYISO
Covanta Hempstead is a municipal solid waste-to-energy facility located at 600 Merchants Concourse, Westbury, Nassau County, New York. The facility comprises three identical energy-from-waste combustion units that generate steam to drive a single 78.6 MW steam turbine generator. It opened in October 1989 and processes approximately 1 million tons of waste annually, generating electricity sold to the Long Island Power Authority. The facility diverts substantial waste from landfills and recovers ferrous metals for recycling.
Overview
Key fields
- 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
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 CSVMonthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
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 inventoryCommercial, 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
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
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Parties and identifiers
| Relationship | Entity | Basis |
|---|---|---|
| Owner / operator | Former legal owner/operator; regulatory entity on permits | |
| Offtaker / transmission owner | Long Island Power Authority | Electricity purchaser and transmission/distribution operator |
| Owner / former owner | American Ref-Fuel Holdings Corp. | Former owner/operator |
| Portfolio acquirer | Danielson Holding Corp. | Financing covers a portfolio that includes Covanta Hempstead. |
| Regulator | State environmental regulator | |
| Grid selection | plant:plant-10642 | Canonical asset page /nyiso/assets/plant/covanta-hempstead. |
Reporting portfolio
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Generator enters operationEIA-860
EIA-860 lists generator GEN1 with this operating date.
- Waste-throughput and emissions-permit modificationextapps.dec...
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.
Sources
Common questions about Covanta Hempstead
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
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 516.8 GWh over the twelve months to 2026-04. 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.
Co-located assets
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
Related assets
Similar plants ranked by technology, capacity, and distance.
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