- Combustion
- Retired
- 10 · 100 · 1,000 MW
Map
- Combustion
- Retired
Millinocket Mill: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Millinocket Mill
Power plant · Oil
Key facts
Power plant · Oilran 4% of 2008 Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1957
- Net generation, 2008
- 31,495 MWh
- Location
- Penobscot County, Maine
- Operated by
- HC-50 Main Street, LLCSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Output
- Oil
- Biomass and waste
Details
Who’s behind it
No companies named in filings yet.
Interested in this project?
Set an alert Book a call Join the beta
Our team gets you what you need.
Beta: private project space · data room · readiness check
- Technology
- Oil source: “Petroleum Liquids”
- Age
- 69 years since 1957
1 attribute from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Balancing authority code | ISNE |
Retirement
EIA-860M September 2026StatusEvery generator EIA lists at this plant has retired. As of EIA-860M for September 2026.- Retired
- December 2013
- Capacity retired
- 86.2 MW
- Generators retired
- 4
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| M1S1 | Petroleum Liquids | 15.6 MW | Retired | December 2013 |
| M1S2 | Petroleum Liquids | 15.6 MW | Retired | December 2013 |
| M1S3 | Petroleum Liquids | 31.5 MW | Retired | December 2013 |
| M1S4 | Petroleum Liquids | 23.5 MW | Retired | December 2013 |
Grid
EIA-860Grid fieldsAs the plant reported them to EIA-860 (Schedule 2).- Balancing authority
- ISNE
Transmission lines within 25 km (1)
Can the connection be reused?
A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.
Timeline
- Stated Units M1S1, M1S2, M1S3, M1S4 scheduled to retire, 86.2 MW · EIA-860M
- In service · EIA-860M
Sources
4 sourcesSources EIA-860M · LBNL · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory
Sources
- EIA-860M Preliminary Monthly Electric Generator Inventory
- LBNL — A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024 (OEDI submission 8742)Yin, Nait Belaid & Heleno (2026), Lawrence Berkeley National Laboratory, OEDI, CC BY 4.0: A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024. Modified by Inframation: HIFLD-side fields only, names re-cased, coordinates rounded.
- EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory