PG&E, among the largest regulated US electric utilities, notes that last year was the first time that renewable energy deliveries – including solar, wind, biomass, small hydro-electric and geothermal – exceeded 20% for one year.

This performance gave it a slight surplus for the 2011-2013 compliance period, when renewable deliveries needed to average 20% a year under the mandate.

Since 2002, PG&E has signed 155 contracts for more than 10.6GW