It looks like California's energy regulators could vote next month on a proposal long feared by consumers yet welcomed by utilities. The rule change would reduce the compensation received by rooftop solar customers, diminishing the financial incentive for solar in the state where solar paneled roofs have become almost ubiquitous. This comes at an interesting time, where California, in the face of more extreme heatwaves, has well-publicized problems with its capacity to meet peak demand.