SEATTLE (AP) — Ever since voters passed a law requiring the state’s largest utilities to get more electricity from wind, solar and other renewable sources, there’s been no shortage of attempts to overhaul the rules.

Several bills being considered would make it easier for utilities to meet the standard, drawing criticism from Gov. Jay Inslee and opponents who say it would undercut the law aimed at spurring clean energy development and reducing pollution.

Passed in 2006, Initiative 937 requires utilities to ramp up to getting 15 percent of their power from wind, solar, geothermal and certain woody biomass by 2020.

One bill opposed by environmental groups would change the law to allow hydroelectric power to be counted as a renewable energy source. Another measure says utilities that have enough power would not have to meet an I-937 target.