Commissioners wanted to bring relief to many homeowners who consistently land in the upper tiers, arguing that they were in effect subsidizing their thriftier neighbors. But the commissioners also wanted to preserve the principle that bigger users should pay more for power than those who conserve. Balancing those goals proved tricky.
The new plan will cut the number of tiers from four to two, with electricity prices in the upper tier set 25 percent higher than prices in the lower tier. For many above-average users that represents a substantial break. PG&E customers, for example, currently pay twice as much for electricity in the fourth tier as they do in the first.
Changing the number of tiers and cutting the difference between them will raise bills for the most energy-efficient households. Neither the commission nor PG&E, however, offered any specific estimates Friday.
The commission also voted to slap a surcharge on the biggest residential energy users, those whose electricity usage is four times higher than the bottom tier. Any electricity consumed above that threshold will cost more than twice as much as electricity in the bottom tier.