California wants to go carbon-negative. No one knows the cost

By the middle of this century, Gov. Jerry Brown wants California to pull more greenhouse gases out of the atmosphere every year than it puts in.

That vision will almost certainly cost Californians. No one can say how much, however, because no one quite knows how we’ll achieve it.

California has years of experience ramping up its use of renewable power, plugging ever more solar plants and wind turbines into the grid.

By David R. Baker

https://www.sfgate.com/business/article/California-wants-to-go-carbon-negative-No-one-13231686.php?t=d83a8736d1