The California Public Utilities Commission has come out against Proposition 7, calling the measure bad for consumers and a prelude to less, not more, renewable energy.

The commission, which regulates utilities such as telephones and electricity, unanimously voted to oppose the measure at its meeting Thursday.

A press release from the No on 7 campaign included analysis by the PUC's legal counsel, who also pointed out that renewable energy plants that generated less than 30 megawatts would also suffer under the measure.

"'Renewable power sources smaller than 30MW are unlikely to survive... This would, in turn, unnecessarily increase costs, as well as decrease competition and innovation in the renewable energy market...,'" the counsel had in an analysis partially included in the release.

Proposition 7 opponents, which include both major power utilities and some environmental groups, have said the measure is riddled with loopholes and could result in higher energy bills for consumers. Supporters have said consumers are protected from price hikes within the measure.

If approved, Proposition 7 would mandate that by 2025, half of California's energy would be generated by renewable energy sources. Most believe the bulk of that would come from solar power.