![CLEAN BY 2045](https://cisp.cachefly.net/assets/articles/images/resized/0000751633_resized_enpiccaliforniasolarpanelsbloomberg0820181022.jpg)
Last month, Californian lawmakers approved a measure mandating that all electricity come from wind, solar and other clean-energy sources by 2045. The state currently gets about 44% of its power from renewables and hydro. California was also the first US state to require solar panels on almost all new homes as part of a mandate to take effect in 2020. The photo above shows contractors installing solar panels on the roof of a new home in Sacramento.