The Sierra Club proclaimed in an Aug. 23 press release that Los Angeles, San Francisco, San Jose, and Santa Monica “just announced their intent to join 15 other cities around the world and adopt a plan for zero-carbon buildings by 2050.”
The World Green Building Council (WGBC) defines a net zero-carbon building as “a highly energy-efficient building with all remaining operational energy use from renewable energy, preferably on-site but also off-site production, to achieve net zero-carbon emissions annually in operation.”