Tyee hydro power maxed out and needs to add third generator

It’s time to expand the generating capacity at the Tyee Lake hydroelectric station to handle growing demand — particularly from heat pumps — the plant’s operator said of its plans to line up $20 million in funding and a federal permit to add a third turbine to the facility.

The Tyee Lake station started supplying Wrangell and Petersburg in 1984. It was built with two turbines rated at 10 megawatts each, with an empty bay at the Bradfield Canal facility to add a third turbine when needed.

That time is now, said Robert Siedman, chief executive officer of the Southeast Alaska Power Agency, or SEA...