This is excellent news from California's Governor Jerry Brown at the United Nations (
Sacramento Bee):
Brown said California will meet its goal of reducing carbon emissions to 1990 levels by 2020 and within six months will set a new goal for 2030 “that will be more ambitious, that will require more technology and will also require heightened political will.”
I’d expect his starting point will be this chart and the discussion about updated climate science in
ARB’s Scoping Plan Update last spring, which established the idea of this curved path from 2020 to 2050. At 5.2% per year that would be a
42% reduction from 2020 to 2030.