A California state agency is expected to approve regulations Thursday that could break an impasse in a long-sought goal to require utilities in California to obtain a third of their power from solar and other renewable sources by 2020.  The vote by the California Air Resources Board is being watched closely by many who have curtailed expansion of their operations in the state because of the regulatory deadlock.  Some say the regulations, which would also include a streamlined permitting process for renewable energy projects, could face an uphill battle with an unsympathetic new governor and could be overturned by a ballot initiative.  As they wait for a resolution, solar, wind and other alternative power companies say they have been unable to lay out business plans, court investors or attract customers. Many said they were considering focusing their efforts in other states or abroad, where clean-tech policies are more comprehensive.  Read More About California Wind and Solar