Robert Raymer, technical director for the California Building Industry Association, called it a "quantum leap".
Almost 16% of the state's electricity a year ago came from solar.
About 117,000 new single-family homes and 48,000 multi-family units will be built in 2020, the commission estimates.
One dead after attack on Durban mosque where victims' throats slit
Three people are in a serious condition after a mosque in Verulam , KwaZulu-Natal came under attack at 14:39 on Thursday. The Muslim Judicial Council of South Africa "vehemently condemned" the attack on the mosque.
Homes built in California in a couple of years will have to be equipped with solar energy systems.
The minimum amount of solar power required by the new standards wouldn't be enough to meet all the needs of most homes. If they save on electricity bills, however, it will be because customers who do not have solar panels are subsidizing them. "The buildings that Californians buy and live in will operate very efficiently while generating their own clean energy".
"We are first but we will not be last", said Commissioner David Hochschild after vote. The extra expense would hit at a time when California is suffering a severe and deepening housing affordability crisis.
The Sacramento Bee reports that the California Building Industry Association, which represents new homebuilders, has expressed reservations about the new rules, adding it wished the state would've postponed the regulations for a few years. Exceptions will also be granted to properties where it's not feasible or cost-effective, such as for properties that are located entirely under shade.
Warren Buffett: Berkshire-Amazon-JPMorgan healthcare initiative to name CEO soon
According to Market Watch , the stock is jumping towards its biggest six-day rally in nine years. It now has a 5 percent stake in the iPhone maker, trailing only Vanguard Group and BlackRock.
"Anything that's going to expand the market and increase awareness is great", Barry Cinnamon, CEO of San Jose-based Spice Solar, which specializes in residential installations, told the paper.
Renewable energy is California governor Jerry Brown's thing.
Even so, one of the members of the Energy Commission, Andrew McAllister, sees it as an advance against global warming and an advantage for the citizen.
California has long led the nation's battle against climate change and has adopted tough regulations to curb greenhouse gas emissions.
This story was reported by The Associated Press.
Charlie Rose and CBS sued for sexual harassment
In the following three decades, three CBS managers had been made aware of the complaints, according to the Post investigation. Rose fired Harris and McNeal following last year's Post story, and CBS did not offer them new positions, the lawsuit said.