What's in a big wave? Potential electricity for MN homes, businesses

DULUTH — It's that time of year, when a strong winter storm might produce giant waves along Lake Superior shorelines that aren't frozen over.

Minnesota researchers are looking at how to harness those forces and turn them into usable energy. Superior's waves can sometimes top out at 10 to 15 feet in height before crashing into the shore.

University of Minnesota Duluth Assistant Professor of Mechanical and Industrial Engineering Craig Hill and his team have been looking into wave pattern data to learn just how powerful they can be.

Additional work will focus on deploying efficient devices that can convert wave energy into storable electrical energy. Hill said the Great Lakes region is a good "testing lab."

"We occasionally get these big storms," said Hill, "where we could, if the technologies were out there, we could power tens of thousands of homes from the waves in those storms."

Hill said one challenge is that Great Lakes waves are more intermittent compared to coastal areas on either side of the U.S.

He said those regions are seeing acceleration of this type of work, but noted that Superior can still be an ally in the movement, especially for testing.

He added that if the technology is perfected, waves could be one of many sources used in the transition away from fossil fuels.

Climate change is resulting in less ice cover on Lake Superior. Hill suggested that they can take that unfortunate impact and turn it into an opportunity.

"That has a big impact on the wave conditions," said Hill. "That has a big impact on the coastlines around the Great Lakes. And so, there might be opportunities to test out the devices year-round in the coming future here, on Lake Superior."

Hill said securing enough research funding is another challenge.

And before this technology is turned into a commercial-scale option, experts will have to ensure fish, aquatic mammals and shorelines aren't negativity impacted.