It’s the utilities vs. rooftop solar, and with PV becoming more accessible and installations soaring, the fight is heating up.
In San Antonio, the municipally owned CPS Energy last week said it will slash the value of the credit for solar produced from rooftop installations. Its claim is a central one made by the utilities: as more people produce their own power through rooftop solar — and reduce their electricity bills — utilities are left unable to meet their cost of maintaining the energy infrastructure. CPS Energy said it had two options: reduce the amount it credits solar households for rooftop-produced solar, or raise rates for everyone.
These power company fears about distributed solar aren’t new; investor-owned utilities in California have long fought to temper net metering and community solar, for instance. But the issue is top of mind now amid widespread discussion of a report [PDF] by the utility trade association Edison Electric Institute that said solar photovoltaics, along with battery storage, fuel cells, geothermal energy systems, wind, micro turbines, and electric vehicle (EV) enhanced storage, “could threaten the centralized utility model.”
CPS Energy seemed to waste little time in moving to keep the upper hand. Here’s how Cris Eugster, executive vice president and chief strategy and technology officer for the utility, explained the move in a statement:
Costs to install photovoltaic systems continue to fall, making them increasingly available for more customers. And with that growth, the costs of the utility infrastructure are borne by fewer customers — those who don’t have solar systems. To ensure that solar customers continue to enjoy the benefits of any distributed energy they produce, and pay a fair share of the infrastructure that they rely on, we’re taking a different approach. This is really important in San Antonio, where one quarter of the community’s residents are at or below the poverty level, and monthly energy bills absorb a larger portion of their monthly budgets.
But not everyone is buying that solar is putting such a squeeze on CPS Energy. Lanny Sinkin, executive director of the advocacy group Solar San Antonio, told Texas Public Radio that the utility’s customers don’t have anywhere near enough solar to present a cost-structure issue.
“In San Antonio, we have about 8 megawatts of solar distributed in a system that’s more than 7,000 megawatts,” Sinkin said.
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