An effort to bring renewable energy to western Alaska was recently recognized by the federal government. The Ocean Renewable Power Company was named the 2016 Outstanding Stewards of America’s Waters for its ability to bring hydropower to the Bristol Bay village of Igiugig.
The Kvichak River flows out of Lake Iliamna and into Bristol Bay. It helps support the world’s largest sockeye salmon run in the world. More recently, it’s been helping fuel the nearby village of Igiugig.
Randy Alvarez has lived in Igiugig for over thirty years. He was born and raised in Naknek, another small town in Bristol Bay. As a longtime resident, Alvarez is familiar with the fact that fuel is often two or three times as expensive in the bush as it is on the road system. He’s also keenly aware because of his job.
“I’ve commercial fished since I was old enough to go in the boat with my father, and I still do it,” Alvarez explained. “I’m planning on doing it as long as I can.”
It was a big surprise to his fellow fishermen when Alvarez got behind a project that would test an underwater turbine in the Kvichak.
“Putting a turbine in the river was a big concern for a lot of fishermen,” Alvarez said.
But it wasn’t going to be the first time a turbine was used in Alaskan waters. The first prototype was tested in the Tanana River near Fairbanks.
Monty Worthington is the Ocean Renewable Power Company’s director of project development in Alaska.
“That river is very silty,” Worthington said. “Not only is it silty, it has lots of woody debris in it and other challenges.”
Worthington said debris did what it does best—it got stuck. He said silt made it so the team of researchers from the University of Alaska Fairbanks couldn’t see what else besides water was moving through the underwater blades. So, Worthington’s team turned to Bristol Bay’s Kvichak River.
“The Kvichak River is fairly unique in Alaska in that it’s a large, fast-flowing, and clear river,” explained Worthington.
The turbine, or RivGen, as Worthington calls it, was lowered into the Kvichak for its first test run from August until September of 2014. Randy Alvarez said they placed the turbine very strategically.
“It was about twenty feet of water where they put it in,” Alvarez explained. “They put it in the deepest part of the river, so that ice and anything floating downriver on top, or even boats, could go over the top of it.”
RivGen is outfitted with five underwater cameras. The crew kept a close eye on all the underwater action during its first test run. They didn’t see any salmon getting stuck, so it was put back to work the following summer. The second test run was from July until September, overlapping with the more than a million sockeye running up the Kvichak.
“After two years of studying it, it didn’t have much impact at all, which was a great relief to us,” Alvarez admitted. “It showed that we can have it and not worry about it chewing up our salmon.”
Those results earned the Ocean Renewable Power Company this year’s Outstanding Stewards of America’s Waters Award, but the real reward won’t be known until the next phase of the project, when Worthington begins work on a commercial turbine. Alvarez says a commercial RivGen could cut Igiugig’s energy bill in half.
“Forty years ago, it was different. It didn’t cost much money to live in villages,” Alvarez explained. “Now, it’s expensive, so we need the jobs, and we need cheaper electricity.”
The design phase of the commercial turbine is expected to be complete by March 2017.
