California commits to 100% clean electricity by 2045: governor

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California is doing a pretty good job of flying the flag for renewable energy in the USA, as the state has just announced it will aim to bolster its climate targets.

Gov. Jerry Brown on Monday signed a bill requiring that 100% of California's electricity be generated by renewables like wind and solar by 2045.

Finally, Brown signed an executive order to spur the state toward "carbon neutrality" by 2045, meaning it will remove as much carbon dioxide from the air as it emits.

He also signed a bill, SB100, making the state's electricity completely emissions-free by 2045.

Brown's action comes as thousands of scientists, political leaders, celebrities and others are arriving in San Francisco this week for the "Global Climate Action Summit", a meeting at the Moscone Center that is spearheaded by Brown and United Nations officials. The state's biggest utilities, however, opposed the measure. Yes, they do. So what we believe is that people are increasingly seeing the symptoms.

"This summit is going to be a showcase for the whole world in terms of climate action", said Ethan Elkind, head of the climate program at the Center for Law, Energy & the Environment at the University of California, Berkeley.

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The law sends a message that California supports the global Paris agreement to fight climate change, he said.

While 32% of commercial energy sale past year was purchased from renewable sources, one glaring problem California faces is having the overall energy supply matchup with overall demand for electricity. The bill also requires electric utilities and other service providers to generate 60% of their power from renewable sources by 2030, up from the 50% goal previously set for that date.

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. Kevin de León, D-Los Angeles.

And earlier this year, for one entire month, Portugal produced enough renewable energy to meet its entire electrical demand - although the country did rely on fossil fuels to balance out the periodic disconnect between supply and demand. Another potential solution is pumped storage, in which water is pumped uphill in the afternoon using solar energy and then released through hydroelectric generators after the sun sets.

The three largest investor-owned utilities collectively served 34.76 percent of their 2016 retail electricity sales with renewable power sources like wind, hydroelectricity, geothermal and bioenergy. Natural gas, considered a "cleaner" fossil fuel, makes up 49 percent of the energy mix.

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