The uncertainty stems from a proposal to reduce state-established credits for surplus solar power — power produced by rooftop panels over and above what is needed by the home, a system called net metering — and also add an extra fee for homeowners with solar. The plan, which was initially proposed in December, caused public protests and an outcry from solar leaders.

Regulators said changes are needed to more accurately reflect the cost of maintaining existing grid infrastructure like power lines, which solar users pay little for but still rely on. The proposal was indefinitely delayed in February, and the commission made some adjustments in May and sought additional input in June. It’s unclear when the commission will hold a vote on the proposed plan.