Announced at HydroVision: GE Renewable Energy awarded contract to refurbish 1,117-MW Boundary powerhouse

GE Renewable Energy announced at HydroVision International that it has been chosen by Seattle City Light to rebuild three generators in its 1,117-MW Boundary powerhouse.

The Boundary project is located on the Pend Oreille River in northeastern Washington State and supplies up to 30% of Seattle City Light’s annual energy needs.

The work to be performed includes refurbishment of powerhouse generators 51, 52, and 54, as well as engineering and site work. The work will increase the nameplate output of the generators to 190 MVA, from 166 MVA for two generators and 170 MVA for the third, reducing power loses and enhancing grid stability.

This rehabilitation will allow safe and reliable operation of these units for the next 40 years, GE Renewable Energy says. Onsite work on these three generators will begin in July 2019 and is scheduled to be completed by May 2022.

“Seattle City Light is pleased with the outcome of this solicitation and looks forward to a strong relationship with GE as we continue to enhance our renewable energy portfolio for our customers,” said Seattle City Light Power Supply Officer Mike Haynes.

Pierre Marx, General Manager for GE Renewable Energy’s Hydro business in North America, said, “We appreciate the confidence that Seattle City Light … [has] shown in GE Renewable Energy. It is more important than ever to keep the U.S. hydro fleet operating at full capacity given its critical role in maintaining stable and efficient electric service while enabling the addition of other renewable power sources like wind and solar.”

Seattle City Light’s power mix in 2016 was about 88% hydro.

GE Renewable Energy is a $10 billion start-up that combines onshore and offshore wind, hydro, and concentrated solar power and has installed more than 400 GW of capacity globally.


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