Alcona P-2447

General information

Waterway  Au Sable River
Current status   Active license 
Type of facility Conventional Hydro
Mode of hydropower generation Run-of-river
Type of permit FERC License

FERC information

FERC docket # P-2447
FERC project name Alcona
Permit issued 7/10/94
Permit expiration 6/26/34

Ownership and operation

Owner Consumers Energy Co
Owner type Investor-Owned Utility
Year first online (conventional hydro) 1924
Transmission or distribution system owner ITC Transmission

Power and generating capacity

Number of units 2
Total capacity from hydraulic turbine-generator units within each plant 8.0 mW
Average annual net hydropower generation 27,098.3 mWH
  • Dam containing two existing earth fill embankment sections, a concrete core wall, and a steel sheet pile cutoff wall
  • A 250-foot-long emergency spillway
  • An existing impoundment with an area of 1,470 acre-feet
  • A 135-foot-long tailrace
  • A concrete and masonry powerhouse containing two generating units
  • Transmission facilities, including a powerhouse step-up substation and a 400-foot-long, 138-kilovolt transmission line, and appurtenant facilities
  • The project has an average annual energy production of 26,038 MWh, based on a ten-year period of record from 1980 through 1989.

For a detailed description of this project and 10 others included in the Consumers Settlement Agreement, read this summary.

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