Hydropower Facilities

Hydropower Facilities

YCWA owns and operates three separate powerhouses on the Yuba River: the New Colgate Powerhouse, Narrows 2 Powerhouse, and the New Bullards Bar minimum instream flow powerhouse.

New Colgate Powerhouse – 340 Megawatts

New Colgate Powerhouse is located on the main stem of the Yuba River downstream of the convergence of the North Yuba River, Middle Yuba River, and Oregon Creek.

Water is carried nearly five miles from New Bullards Bar Reservoir through a 26-foot diameter tunnel, and then makes its way down a 15-foot diameter penstock to drive two of the largest single-cast turbines ever built.

These turbines produce 340 megawatts, which is enough electricity for 350,000 people.

Narrows 2 Powerhouse – 55 Megawatts

The Narrows 2 development is located on the main stem of the Yuba River. The development includes one power tunnel and penstock, and one powerhouse.

Narrows 2 Powerhouse is located downstream from Englebright Dam and receives the water to drive its turbine from Englebright Reservoir.

This powerhouse supplements the Narrows 1 Powerhouse, which is owned by Pacific Gas and Electric Company and is located on the opposite side of the river.

New Bullards Bar minimum instream flow powerhouse – 150 Kilowatts

The Fish Release Powerhouse generates power from the water released at the base of the New Bullards Bar Dam used for fishery maintenance on the river.

This facility was added in 1986 and can be used to operate the spillway gates for New Bullards Bar Dam in the case of a power outage.