California and Brazil sign expanded climate partnership

Governor Gavin Newsom announced an expanded partnership between California and Brazil to scale cooperation on climate, clean energy, pollution reduction, and related policy ahead of COP30.

• Main announcement: The State of California signed a Memorandum of Understanding (MOU) with Brazil during Climate Week to pursue joint work on market-based carbon pricing, high-quality carbon offsets, clean transportation (including low-carbon fuels and expansion of zero-emission vehicles and infrastructure), conservation of 30% of lands and oceans by 2030, and strengthening air quality management; the MOU text is available (see document URLs) and the collaboration is timed ahead of UN COP30 in November 2025.
• Background and details: The partnership builds on a February 2025 MOU with 21 Brazilian state governors (Consórcio Brasil Verde) and ongoing cooperation through the Governors’ Climate and Forests (GCF) Task Force and Subnational Methane Action Coalition (SMAC); cited metrics include California GHGs down 20% since 2000, GDP +78% since 2000, ~15,000 MW battery storage, and two-thirds clean energy in 2023.