Smog in your heart
So, if you live in the city, then you really need to listen to your doctor if she tells you to lower your LDL/HDL levels.
Anyway, I suppose PG&E is moving in the right direction by building the world's largest solar plant in Southern California -- a 6000 acre, half-gigawatt solar thermal plant in the Mojave desert. PG&E has contracted Solel, and Israeli company specializing in solar energy, to build the plant. There are already nine solar thermal plants operating in the Mojave desert, totaling 354 megawatts in capacity. When the new plant comes online, Mojave will have nearly a gigawatt of solar thermal generating capacity.
According to LADWP, the city's peak demand is 5.7 gigawatts, and a little more than half of that demand, or about 2.97 gigawatts, is met by burning coal. Assuming LADWP substitutes the new solar thermal capacity for coal capacity, LADWP could reduce its utilization of coal generating capacity, and thus emissions from coal, by about 18%. That's a significant chunk, but not nearly good enough.