Photo by Sonia Carcoilo, Government of Ontario:  Governor Brown (right), Ontario Premier Kathleen Wynne (left) and Quebec Premier Philippe Couillard (center) sign agreement to expand cap-and-trade partnership.

Source: Governor’s office and government of Ontario, Canada

September 24, 2017 (Quebec City) – California Governor Edmund G. “Jerry” Brown Jr. yesterday signed an agreement with the leaders of Quebec and Ontario to officially integrate their cap-and-trade programs, expanding the three-year partnership between California and Quebec to include Ontario, Canada's most populous province and leading industrial region. The agreement takes effect January 1, 2018.