California governor Gavin Newsom has signed bill AB525 into law, moving ahead long-anticipated plans to develop offshore wind power in the US Pacific by mandating state agencies to prepare a concrete plan to develop some 4GW of floating projects.

The bill, passed with unanimous bipartisan support as part of a $15bn climate change mitigation and preparation legislation package, requires the California Energy Commission (CEC) to set hard targets for offshore wind for 2030 and 2045 in a roadmap to submitted to the legislature and the state Natural Resources Agency by June 2023.