Leave your feedback Share Copy URL https://www.pbs.org/newshour/show/as-goes-maine-a-tidal-energy-project-powers-up Email Facebook Twitter LinkedIn Pinterest Tumblr Share on Facebook Share on Twitter Story One of the big obstacles to clean energy is that most renewable sources are unreliable. A Maine company has installed the nation’s first commercial, grid connected tidal energy project. Water power – including conventional hydropower and new technologies like ORPC’s tidal turbine – is estimated to nearly double by 2030 and provide an estimated 15% of the total domestic electricity supply.