Looks like early signup aka "positive enrollment" is now available for this CCA/CCE. Anyone in San Mateo County thinking about it? The savings don't look to be huge. One potentially significant drawback is that positive enrollment waives some of the usual flexibility to go back to PG&E. Main benefit is reduced carbon footprint. Peninsula Clean Energy – Peninsula Clean Energy is a community choice energy (CCE) program, also known sometimes as community choice aggregation.