Regional Waste Systems
Regional Waste Systems is a 13 MW biomass power plant in Cumberland County, Maine, operated by Ecomaine. EIA-860M lists 1 generating unit here, inside ISO New England. Its unit entered service in 1988.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 13.3 MW
- 11.5 MW net summer
- Generating units
- 1
- In service
- 1988
- EIA plant ID
- 50225
Where it is
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- County
- Cumberland County, Maine
- Coordinates
- 43.6556, -70.3347
- Balancing authority
- ISNE
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Ecomaine
- Primary energy source
- Biomass
- Technologies
- Municipal Solid Waste
- Status
- Operating
Regional Waste Systems: FAQ
- Where is Regional Waste Systems?
- In Cumberland County, Maine (ME). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Regional Waste Systems?
- 13 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Regional Waste Systems?
- EIA-860M names Ecomaine as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Regional Waste Systems LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Ecomaine here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Regional Waste Systems LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Regional Waste Systems still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.