When Marin Clean Energy announced it would halve 2015 purchases of the controversial “unbundled” renewable energy certificates to only 15 percent of its total electricity, Paul Fenn, a pioneer in the community choice aggregation movement, was cautiously optimistic.
Mr. Fenn, the author of a 2002 state bill that led to the creation of M.C.E., has worked for decades to develop policies permitting local governments to aggregate electricity demand and provide renewable energy to customers.