Ames P-400

General information

Waterway  South Fork San Miguel River Tributary
Current status   Active license 
Type of facility Conventional Hydro
Mode of hydropower generation Peaking
Type of permit FERC License

FERC information

FERC docket # P-400
FERC project name Ames
Permit issued 5/14/10
Permit expiration 6/26/50

Ownership and operation

Owner Public Service Co of Colorado
Owner type Investor-Owned Utility
Year first online (conventional hydro) 1906
Transmission or distribution system owner Tri-State G & T Assn, Inc

Power and generating capacity

Number of units 1
Total capacity from hydraulic turbine-generator units within each plant 3.6 MW
Average annual net hydropower generation 8,332.7 MWH

This project is located on the Lake Fork and Howards Fork of the San Miguel River, in San Miguel County, about 6 miles south of Telluride, Colorado. The project currently occupies 99 acres of the Uncompahgre National Forest.

The Ames Hydroelectric Project is one of two developments currently licensed as the Tacoma-Ames Project. The other,Tacoma project (P-400), is located on the Cascade Creek about 20 miles north of Durango, CO. The Tacoma Project has a total generation capacity of 8 MW and the Ames project has a total generation capacity of 3.5MW.

Annual generation varies substantially depending on snow pack and runoff from snowmelt. For the period 1995 to 2004, which includes a relatively dry period year in 2002, the Ames Project had an average annual generation of 12,682 megawatt-hours (MWh).

Check out the project website at



License Application Filed 06-26-2008
DEA Released 05-01-2009
FEA Released 10-22-2009

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