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California Mandate For Solar Panels On Homes’ Roofs Tested

A home in the El Cerrito neighborhood of San Diego has solar panels on its ro...

Photo by Richard Klein

Above: A home in the El Cerrito neighborhood of San Diego has solar panels on its roof, Jan. 25, 2016.

California's mandate for rooftop solar panels on all new low-rise homes was tested for the first time on Thursday when regulators approved a Sacramento utility's proposal to give homeowners an alternative to installing rooftop solar.

Over the objections of environmentalist activists, the California Energy Commission approved the Sacramento Municipal Utility District's plan to build its own large-scale solar site that homeowners can tap into, forgoing the need to install solar individually on each new home.

Environmentalists said it undercuts the mandate for a solar panel on every roof. But regulators sided with the utility after support from home builders and lawmakers who said the proposal provides clean energy without raising home prices in a state facing a housing crisis.

“This is something that is bold and cutting edge,” Commissioner Janea Scott said of the Sacramento Municipal Utility District's application.

RELATED: California Gives Final OK To Require Solar Panels On New Houses

The mandate that took effect Jan. 1 calls for new single-family houses or low-rise apartments to install solar panels. Alternately, utilities and organizations can apply to the California Energy Commission to build an offsite "community shared solar" site for buildings to draw from.

Using the latter option, the Sacramento Municipal Utility District's plan sets a blueprint for private and public entities to seek their own large solar sites to meet the mandate, watchers say. The largest public utility in the U.S. — the Los Angeles Department of Water & Power — endorsed the idea in filings to the commission.

Public testimony ran for two hours at the commission meeting Thursday. Environmentalists and some homeowners denounced the move as gutting the mandate. They said consumers save more money with their own solar panels rather than the savings from the Sacramento Municipal Utility District's proposed plan.

Supporters, including a dozen unionized workers at the Sacramento Municipal Utility District, said the utility's option will give homeowners a chance to tap into solar power without needing to maintain their own panels.

The mandate of a panel on every roof was seen as a revolutionary model for other counties and states when the California Energy Commission originally approved it in 2018. The provision allowing an offsite solar site was less noticed, loosely worded to allow for buildings that can't support solar onsite to comply with the mandate by using a nearby solar facility.

RELATED: SDG&E Wants To Nearly Quadruple Its Minimum Charge To Customers

Energy Commissioner Andrew McAllister said the provision was intentionally vague because "we wanted to see some innovation."

A bipartisan group of 16 Assembly members and 16 senators representing districts statewide signed onto a letter from Sen. Richard Pan endorsing the Sacramento Municipal Utility District's application ahead of Thursday. Assemblyman Kevin Kiley, a Republican representing part of Sacramento County, told commissioners the proposal would help prevent construction costs and home prices from rising further.

One senator who disagreed, Scott Wiener, a Democrat from San Francisco, said that the Sacramento Municipal Utility District's proposal is “anti-rooftop” because it is "an effort to shift away from rooftop solar and to utility-scale solar."

Many environmentalists agreed and said the Sacramento Municipal Utility District's large-scale solar plan went dramatically beyond the spirit of the alternative energy spelled out in the mandate. They said "community shared solar" sites ought to be small and close to buildings being served.

The Sacramento Municipal Utility District counters that homeowners can still apply with the utility to install rooftop solar panels if their energy use demands it. The utility, which serves 1.5 million residents in Sacramento County and parts of neighboring counties, says its program would guarantee a financial benefit of $10 kW per year for 20 years.

“Both rooftop and community solar have unique benefits," said Steve Lins of the utility district. “But at the end of the day, they both reduce carbon.”


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