Such projects use buoys equipped with turbines that harness the power of the rolling waves to generate electricity.
Finavera declined to comment about why it decided to give up its wave-energy projects, but officials said its most pressing concern is finishing a handful of wind projects in Canada and Ireland.
The company's wave-power buoy sank unexpectedly during a test run more than a year ago off the Oregon coast, and the plans to place four buoys in Makah Bay have lagged because of state and federal permitting.
Finavera's decision isn't surprising given the wave-energy industry's infancy compared with wind, which now has honed its turbine technology and lowered power costs, said Roger Bedard, ocean-energy leader with the nonprofit Electric Power Research Institute.
Bedard said he was optimistic that wave-device testing and planned commercial projects by different companies and Oregon State University off the Oregon coast will propel the young field forward.