But renewable energy's backers say the Washington Energy Independence Act has helped attract $7.9bn of investment in the state, employing hundreds of people.
Washington lawmakers have proposed a bevy of bills that would significantly change the state's renewable energy mandate, which requires utilities to add renewables to serve 15% of their load by 2020.
The most dramatic changes would halve the state's renewable energy targets and allow utilities to count electricity from regional hydroelectric dams built before 1999.
Because
