USA - California Cap-and-Trade Program

Initiated in 2012, the California Cap-and-Trade Program began its compliance obligation on 1 January 2013. California has been part of the Western Climate Initiative (WCI) since 2007 and formally linked its system with Québec's on 1 January 2014. In July 2017, California passed legislation extending the cap-and-trade program to 2030.

The cap-and-trade program covers sources responsible for approximately 85% of California’s GHG emissions. In 2016, California passed legislation to reduce emissions by 40% compared to 1990 levels by 2030.

State and Trends of Carbon Pricing 2018

The State and Trends of Carbon Pricing series reflects on the growing momentum for carbon pricing worldwide. It targets the wide audience of public and private stakeholders engaged in carbon pricing design and implementation. This report provides an up-to-date overview of existing and emerging carbon pricing instruments around the world, including national and subnational initiatives. It also investigates trends surrounding the development of carbon pricing instruments and how they could accelerate to deliver long-term mitigation goals.