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New York restarts second unit at 1,160-MW Blenheim-Gilboa

New York Power Authority announced June 3 it refurbished and returned to service a second unit at the 1,160-MW Blenheim-Gilboa Pumped-Storage project.

The newly refurbished pump-turbine generator, Unit 1, resumed operation June 1. It had been out of service since September 2007. (HNN 9/7/07) Unit 2, the first unit refurbished in a four-year, $135 million program to modernize and extend the life of Blenheim-Gilboa (No. 2685), was returned to service in May 2007.

With the overhaul of two units now complete, the state-owned utility said all four units would be available this year to meet demand during the peak-demand summer season.

In September, NYPA will begin work on the third pump-turbine generator, shutting down the entire station for part of October and November to lower the water level of the upper reservoir to prepare for work. The third unit is to return to service in June 2009. Work on the final unit will be performed in the same manner the following year.

The Life Extension and Modernization program is scheduled for completion in June 2010. It includes replacement of major mechanical and electrical components, and maintenance and repairs to most other parts.

NYPA said the overhauls would allow the facility to produce more power from the same amount of water while extending reliable service. Following overhauls, each unit will have a capacity of 290 MW.

Blenheim-Gilboa began service in 1973. It is in the Catskill Mountains, in the towns of Blenheim and Gilboa, about 65 miles southwest of Albany, the state capital.


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