Penticton Herald

Turning up voltage at B.C. hyrdro dams

- BILL STOLLERY Bill Stollery is a retired constructi­on manager living in Penticton and aspiring author “How WE Can Save the World.”

Hydroelect­ric power is an important source of green energy. B.C. is lucky to have a significan­t supply of hydroelect­ric power as we continue to address the concerns of climate change.

While on a short vacation recently to the West Kootenays, I stopped to pursue my interest in dams at the Hugh Keenleysid­e Dam just north of Castlegar. I noticed that a significan­t portion of the river flow was through the dam control gates rather than the electric turbines.

From my experience, one of the advantages of hydroelect­ric facilities is the ability for them to address the high-value power which occurs at peak demand each day, when most people return home in the evening and initiate power demand activities.

This is possible because of the ability of the hydroelect­ric facility to quickly and easily adjust the flow through the turbines. This is not possible for steam-generated power from coal and nuclear plants.

The recent improvemen­ts in the efficiency of electrical storage should make it possible to use almost 100% of the river flow to generate power and use the combinatio­n of the turbines and storage at appropriat­e rates to meet the peak demands. This would require increasing the hydroelect­ric power capacity at the chosen dams to an appropriat­e level.

The addition of added hydroelect­ric power generation at an existing dam will have a significan­tly lower cost.

The appropriat­e dam locations for adding generating capacity may depend on such considerat­ions as the alternate green electrical generation appropriat­e for the specific location.

I believe, almost any existing dam in B.C. could be included.

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