A bipartisan group formed by the Washington Legislature has been meeting with since spring to come up with ways to cut greenhouse gas pollution.
But as a Dec. 31 deadline approaches to finalize a report, there appears to be little agreement yet on those strategies.
The five-member group, which includes the governor as a non-voting member, meets again Friday. A public hearing is scheduled for Dec. 13 in Olympia.
A 2008 state law called for Washington to return to 1990 emissions levels by 2020, and for greater reductions beyond that.
Any recommendation needs approval from at least three panelists. With the group split along party lines on some of the bigger, more ambitious proposals such as a cap on carbon pollution, consensus may be difficult.