California Governor Newsom Forges Global Climate Alliances at COP30 in Brazil

Newsom Concludes Landmark Participation at COP30

California Governor Gavin Newsom has concluded his significant participation at the 30th United Nations Climate Change Conference (COP30) in Belém, Brazil, from November 10 to 21, 2025. Newsom emerged as the highest-profile American official at the summit, stepping into a leadership void created by the absence of a federal U.S. delegation. Representing the U.S. Climate Alliance and America Is All In coalitions, the Governor highlighted California's proactive stance on climate action and its commitment to global partnerships.

Expanding International Climate Partnerships

During his time at COP30, Governor Newsom spearheaded the formation of several new international partnerships and Memorandums of Understanding (MOUs), reinforcing California's role in the global fight against climate change. These agreements aim to boost innovation, improve environmental protection, and strengthen cooperation on climate and clean energy initiatives.

• With the State of Pará, Brazil, Newsom signed an MOU to enhance cooperation on wildfire prevention and response, including forest monitoring and sharing expertise. A broader partnership with Brazil was also announced to advance market-based carbon pricing programs, clean transportation (including zero-emission vehicles and low-carbon fuels), and strengthen air quality management.
• An MOU with Colombia was established to advance joint efforts on biodiversity, clean energy, clean transportation, nature-based solutions, and methane reduction.
• Cooperation with Chile was expanded, including an MOU focused on methane management.
• A significant MOU was signed with Nigeria, covering sustainable urban transportation, green ports, low-carbon transportation fuels, climate adaptation, methane detection and abatement policies, greenhouse gas emissions, air quality, and academic exchange.
• California also reaffirmed its commitment to stronger climate cooperation with the German state of Baden-Württemberg through a joint statement, focusing on renewable energy expansion, resilient grids, hydrogen, storage, circular economy, water management, and climate adaptation.

Newsom also toured the Amazon Bioeconomy and Innovation Park and met with Brazil's Minister of Indigenous Peoples, Sonia Guajajara, and Minister of Management and Innovation, Esther Dweck, to discuss collaborative efforts.

California's Assertive Climate Leadership

Governor Newsom utilized the COP30 platform to underscore California's leadership in driving climate progress, particularly in the absence of federal U.S. engagement. He emphasized that California's 'results-driven model' demonstrates how cutting pollution and creating clean-energy jobs can go hand-in-hand with economic growth. Newsom openly criticized the Trump administration's decision not to send a federal delegation, calling it an 'abomination' and a 'disgrace,' and asserted that while federal policies may shift, California remains a 'stable, reliable partner' for low-carbon, green growth. His presence, accompanied by a large alternate U.S. delegation of over 100 state and local officials, highlighted the growing role of subnational governments in global climate diplomacy.

Implications for Global Climate Action

Newsom's active engagement at COP30, including marking the tenth anniversary of the Under2 Coalition, showcased California's long-standing commitment to subnational climate alliances. The agreements forged and the leadership demonstrated by California at COP30 are seen as a framework for future subnational collaboration, aiming to accelerate international cooperation on innovation and climate action, especially when national governments fall short.