Alaska Harnesses Power of Tides, Rivers, and Waves
July 11, 2014
By Joaquin Palomino | Alaska Public Radio Network: Engineers have tried to harness the power of pounding waves and shifting tides for generations, but only recently has the goal been attainable. With 90 percent of the nation’s tidal power, and a good chunk of its wave and river energy, Alaska’s quickly become the epicenter for this budding technology.
“We are clearly the ocean energy, hydrokinetic energy leader in America,” says Doug Johnson, director of business at the Ocean Renewable Power Company. Johnson is overseeing four hydrokinetic projects this summer, from False Pass in the Aleutians to Yakutat in south-east Alaska. One project, along the Kvichak River near the town of Igiugig, could provide about half of the energy needs for the 50-person community
“If it’s successful you could literally turn the diesel off and use diesel as back-up power,” Johnson says. “It’s just a really excellent way to provide energy to the community. There’s no emissions and there’s really no negative impacts that we’ve seen so far of these devices in the water.”
Despite its technical name, hydrokinetic power is pretty straightforward. It’s basically just a turbine placed in water. As the current or wave moves it, electricity is made. Like any new invention hydrokinetic power is pretty expensive. But in rural Alaska where people pay a premium for energy, it could still pencil out.