Climate commissioner Connie Hedegaard discusses compatibility of the two programmes with state governor Jerry Brown
New bill strengthens target requiring state to deliver a third of energy from renewables by 2020
California's emissions trading plans represent arguably the last chance of delivering a US carbon pricing mechanism - BusinessGreen takes the microscope to the wide-ranging scheme
Officials say plan will boost jobs, but green groups warn scheme will lead to increased air pollution
State of California provides $4m in funding to support rollout of 2,750 recharge points
Campaigners voice fears that little-known Proposition 26 could undermine California's efforts to tackle corporate pollution
State accepts request from Federal government to hold off on new clean air standards
Environmental group files suit alleging Ivanpah approval came without due consideration to wildlife and the environment
California ports test seawater scrubber that aims to slash sulphur oxide and diesel soot emissions
Wave of solar plants faces legal challenge, despite government approval