Science and EnvironmentNorthwest clean-energy advocates eye pumped hydro to fill gaps, with tribes noting concernsBy Courtney Flatt (OPB)July 27, 2020 7:43 p.m.Many states – including Oregon and Washington – have set renewable energy goals. But, there’s a problem. The wind isn’t always blowing and the sun isn’t always shining. Advocates say pumped hydro could solve those problems.THANKS TO OUR SPONSOR:Become a Sponsor📨 Daily news in your inboxSign up today for OPB’s “First Look” – your daily guide to the most important news and culture stories from around the Northwest.EmailPlease leave this field blankSign up