Coal got knocked out in Calif. Now, gas is on the ropes

"In general, it's going to be renewables in, gas out, so you've got that sort of long, slow good-night of lots of gas," said Jim Caldwell, a senior technical consultant with the Center for Energy Efficiency and Renewable Technologies, a Sacramento think tank that has been advocating for regulators to reconsider their grid policies to better account for renewables and climate change.