according to estimates is 2,640 terrawatt-hours per year Bureau of Ocean Energy Management could provide 470 terawatt-hours per year Bureau of Ocean Energy Management is 2,640 terrawatt-hours per year Electric Power Research Institute according to estimates wave energy Ocean Wave Energy | Bureau of Ocean Energy Management Bureau of Ocean Energy Management. website more than half Bureau of Ocean Energy Management is 2,640 terrawatt-hours per year is 2,640 terrawatt-hours per year could provide 470 terawatt-hours per year (Bureau of Ocean Energy Management) Bureau of Ocean Energy Management: Ocean Wave Energy could provide 470 terawatt-hours per year Electric Power Research Institute could provide 470 terawatt-hours per year could provide 470 terawatt-hours per year