California has been able to decrease emissions by about 12% from 2000 to 2017. Most of this reduction was from shifting from coal use to natural gas.
There was a drop of about 8% in the overall electricity from coal from 16% to 8% in 2008. This dropped CO2 emissions by about 30 million tons of CO2 per year. It took California about 4 years to replace the clean energy generated by the San Onofre nuclear plant.
The 18.8 cents per kWh Los Angeles households paid for electricity in September 2019 was 35.3 percent more than the nationwide average of 13.9 cents per kWh. California’s electricity prices have increased about 40% from 2011.
If California had ordered 20 OPR1000 reactors from South Korea, they would have cost $100 billion if they were twice regular South Korea construction costs.
20 OPR1000s operating at the current U.S. national average 93% capacity factor and San Onofre and Diablo canyon still online, California could be producing 200 terawatt-hours of clean electricity — more than total in-state generation in 2016 and 97 percent of in-state generation in 2017.