Is the requirement really cost-effective? Solar lease or purchase? Will new homes be net zero? And answers to other burning questions.

California’s recently approved solar roof mandate for all new homes came as a surprise to many people — even though stakeholders have been working on the rule change for roughly two years.

That’s likely because the California Energy Commission (CEC) passed the requirement earlier this month as an update to the state’s 2019 Title 24, Part 6, Building Energy Efficiency Standards. Not quite everyday reading.

“Building codes are a sleeper issue,” joked Kelly Knutsen, director of technology advancement at California Solar & Storage Association (CALSSA). “But if you get them right, you can do some pretty cool stuff.”

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