- Clean firm
- Wind & solar
- In development
- Retired
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Wind & solar
- In development
- Retired
Hill Mill: location and 5 exact-grade projects within 15 mi. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Hill Mill
Power plant · Hydro
Key facts
Power plant · Hydro Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1986
- Net generation, 2014
- 0 MWh
- Grid
- 0.6 kV to Central Maine Power Co (ISNE)
- Location
- Androscoggin County, Maine
- Operated by
- Lewiston, City of - (ME)SourceEIA-860M Preliminary Monthly Electric Generator Inventory
Output
Details
Who’s behind it
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- Technology
- Hydro source: “Conventional Hydroelectric”
- Age
- 40 years since 1986
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
- September 2006
- Capacity retired
- 1.8 MW
- Generators retired
- 6
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| HM1 | Conventional Hydroelectric | 0.3 MW | Retired | September 2006 |
| HM2 | Conventional Hydroelectric | 0.3 MW | Retired | September 2006 |
| HM3 | Conventional Hydroelectric | 0.3 MW | Retired | September 2006 |
| HM4 | Conventional Hydroelectric | 0.3 MW | Retired | September 2006 |
| HM5 | Conventional Hydroelectric | 0.3 MW | Retired | September 2006 |
| HM6 | Conventional Hydroelectric | 0.3 MW | Retired | September 2006 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 1 kV
- Transmission or distribution system owner
- Central Maine Power Co
- Balancing authority
- ISO New England Inc.
- NERC region
- NPCC
Transmission lines within 15 mi (7)
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 HM1, HM2, HM3, HM4, HM5, HM6 scheduled to retire, 1.8 MW · EIA-860M
- In service · EIA-860M
Sources
4 sourcesSources EIA-860M · LBNL · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory
Sources
- EIA-860M
- LBNLYin, 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.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
Around this plant
Nearby
within 15 mi| Project | Kind | Away | MW |
|---|---|---|---|
| Auburn PV - BD Solar Auburn LLC Filed | Solar | 5.1 mi | 5 |
| Lewiston Jn PV - BD Solar Lewiston Jn LL Filed | Solar | 5.1 mi | 5 |
| Dynamic - Wales Pond Road Postponed | Solar | 9.4 mi | 4.9 |
| Turner Meadow Solar Station Permitted | Solar | 9.9 mi | 19.8 |
| Topsham Meadow Solar Station Filed | Solar | 13.1 mi | 17.2 |
Sources EIA-860M