Regional Waste Systems — Plant Summary
- EIA Plant ID
- 50225
- Capacity
- 13.3 MW
- Primary Fuel
- MSW
- Technology
- Municipal Solid Waste
- Status
- Operating
- Location
- Cumberland, ME
- Operating Since
- 1988
- Generators
- 1
- Operator
- Ecomaine
- Parent Company
- municipally owned
- Annual Generation
- 88,510 MWh
- Capacity Factor
- 76.0%
- Balancing Authority
- ISO New England Inc.
- ISO/RTO
- ISONE
- NERC Region
- NPCC
Regional Waste Systems
OperatingMuni. Waste
Ranked #2 of 3 Muni. Waste plants in ME#49 of 56 nationally
13.3 MW Muni. Waste operating in Cumberland, ME — ISO New England Inc.
EIAGEMWD
13.3 MW
Nameplate Capacity
1
Generators
unit
Municipal Solid Waste
Technology
1988
Operating Since
Location
Coordinates
43.6551, -70.3347
County
Cumberland, ME
Nearby Plants
- Westbrook Energy Center Power PlantNatural Gas563.9 MW · 3.3 km
- South Portland ESS, LLCBESS10 MW · 3.6 km
- S D Warren WestbrookHydro69.7 MW · 3.6 km
Ownership & Operator
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 | Ecomaine | Eco Maine Inc | — |
| Owner(s) | Ecomaine | municipally owned | — |
| Status | Operating | operating | — |
Ownership Chain
About
Regional Waste Systems is a 13.3 MW waste-to-energy plant located in Cumberland County, Maine. The facility, which began operating in 1988, utilizes municipal solid waste (MSW) as its primary fuel source. It is municipally owned and operated by Ecomaine. The plant has a single generator and ranks second out of three MSW plants in the state, and 49th out of 56 nationally.
The plant operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. In its latest year of operation, Regional Waste Systems generated 88,510 MWh of electricity, achieving a capacity factor of 76.0%.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
34.5 kV
Regulatory Status
NR
Entity Type
Municipal
Sector
IPP Non-CHP
Generation
8.1K MWh
Latest Month
88.5K MWh
Annual Generation
76.0%
Capacity Factor
Dec 2022 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
ISO-NE
LMP Node
4001:Z.Maine
Pricing Hub
.Z.MAINE
Node Source
EIA-860 direct report
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