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Ocean Energy Concepts Proliferate

Ocean Energy Concepts Proliferate

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TILLAMOOK, Ore. – If you’re out near the Pacific Coast today, the steady, powerful pounding of the surf might remind you why marine energy developers love this region. This alternative energy sector has been slow to coalesce around one technology. Quite the opposite, in fact. Unconventional ideas are blooming like algae. Correspondent Tom Banse reports on the proliferation of creative electric engineering on the coast.

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Rendering of floating offshore wind farm. Courtesy of Principle Power, Inc. hide caption

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Wave Energy AS program director Stephanie Thornton admires the crashing surf near Barview, Ore. By Tom Banse. hide caption

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Sound: jetty ambience/crashing waves

It’s a mouth watering display if you’re an ocean energy developer. Huge waves crash against the jetties at the mouth of Tillamook Bay. Columns of spray shoot in the air. One company is thinking about redesigning these jetties with electricity generators built inside.

Stephanie Thornton: “When the waves crash or hit against this device, water fills these chambers and runs into the back where the turbine is. Basically it’s very similar to a hydroelectric dam where water just flows through and drives a turbine.”

Stephanie Thornton is the American program director for the aptly named Norwegian company Wave Energy AS. Thornton describes her industry as in its infancy. It’s a period of great experimentation with a panoply of creative technologies.

Stephanie Thornton: “Once they figure out if it can work from a technical standpoint, then it’s the business side of it. The economics may be the key issue.”

For now, for every failed pioneer company about two new startups show up on our coast by my count. A Scottish firm called Aquamarine Power is one of several new foreign companies scouting here. Aquamarine rep Theresa Wisner recently described her firm’s near shore device to the Tillamook County Commission. It’s called the Oyster. It’s a very large mechanical flap resting on the sea bottom.

Theresa Wisner: “What happens is a wave comes in from the ocean. It forces the top of the Oyster down onto some pistons. Those pistons force that water into high pressure water line that goes ashore to a Pelton wheel, which is one of the oldest ways of generating electricity.”

Wisner was followed to the podium in Tillamook by the rep for Seattle-based Principle Power. Kevin Bannister describes his company’s plans for a floating wind farm offshore of Manzanita or Netarts, Oregon.

Kevin Bannister: “The design came from the oil and gas industry. So, semi-submersible platforms like this one are not terribly new. The integration with a wind turbine however is a new idea.”

Yet another company diving in is a Salem-based startup, M3 Wave Energy Systems. Its idea relies on wave pressure passing over air-filled pillows on the sea floor. The pulses compress air, which can then be used to spin an electric turbine.

Tillamook PUD manager Pat Ashby has seen even more far out ideas cross his desk.

Pat Ashby: “We’ve become kind of a bulls-eye for world developers.”

First to connect to the grid will likely be a bobbing buoy generator next year off Reedsport. Ashby says the floating wind farm also seems plausible near term because wind power is “well understood.”

Pat Ashby: “The others have got new technology that needs to be tested. It’s not really existing anywhere in the world right now. And the devices that produce the energy and their ability to withstand saltwater — corrosive elements — need a lot of work yet.”

Ashby says community acceptance also needs some work yet. At the Port of Garibaldi, Oregon, Darren Mobley prepares his boat for winter crabbing. He’s among the many fishermen and crabbers who remain skeptical of ocean energy.

Darren Mobley: “They’re talking about a big area around them that would be closed to fishing. We can’t afford to have any more fishing ground taken from us.”

Electric generation attached to a jetty is the only idea that wins favor from this fisherman. Another boat owner wonders why she should give up her “beautiful ocean to make” costly electricity, which may just go to California.

On the web:

YouTube video of Aquamarine Power’s “Oyster” to embed:

Principle Power, Inc. (Seattle-based):

Aquamarine Power (Scottish):

Wave Energy AS (Norwegian company):

M3 Wave Energy Systems (Salem-based):

Ocean Power Technologies (Reedsport, OR pilot project):

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