Under the newly signed bill, the state's RPS will be updated to require 50 percent renewables by 2026, increasing to 60 percent renewables by 2030.
And even those standards are now in danger, thanks to a Trump action last month that aims to rescind the power of California and other states to set stricter fuel-mileage targets.
Data from the U.S. Energy Information Administration shows California is ranked sixth among states in crude oil production and 15th in natural gas, though production of both has declined since the mid-1980s. "This clean energy bill is also a big win for our economy and jobs, as we have already demonstrated here in California that we can improve our energy resources while making a positive economic impact".
"We want others to do likewise, and if enough people often enough do what is needed we will curb global warming", Brown said during an interview with The Associated Press.
Last year, California joined Washington state and NY to form the U.S. Climate Alliance, which now includes 17 U.S. states committed to achieving the goals of the Paris climate agreement and meeting or exceeding the targets of the Clean Power Plan crafted by the Obama administration's Environmental Protection Agency. It's merely a goal, with no mandate or penalty for falling short.
Here's what we know about this new era for California.
SB 100 has been a two-year project by de León, who will face off against sitting U.S. Sen.
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"Today we're setting a marker that will be remembered by future generations", de Leon said.
It directs the state to achieve "carbon neutrality" by 2045 at the latest, and after that to begin to reduce the state's net carbon emissions.
Major cities will likely announce greenhouse gas emissions trending downward, and governors will unveil partnerships supporting indigenous efforts to sustainably manage tropical, carbon-dense forests.
San Diego's Republican Mayor Kevin Faulconer was one of many lawmakers praising the bill.
The bill also requires the state's Public Utilities Commission and its Energy Resources Conservation and Development Commission to take steps to ensure that a transition to a zero-carbon electric system for California does not cause or contribute to greenhouse gas emission increases elsewhere in the western grid.
Some environmentalists are pushing Brown to end new drilling permits.
Jerry Brown signed into law on Monday a bill that commits the state to a 100 percent renewable energy power grid by 2045, which would make it the world's largest economy to pledge to rely completely on renewable energy generated from solar, wind and water, according to The Hill. Assemblywoman Lorena Gonzalez Fletcher, D-San Diego, left, who carried the bill in the Assembly, watches.