Two U.S. states recently passed legislation that would require significant increases in renewable electricity generation. On June 8, Hawaii updated legislation setting a 100% renewable portfolio standard (RPS) by 2045. On June 11, Vermont passed a bill creating a 75% RPS by 2032. Both of these RPS target percentages are higher than any other RPS target in the United States.
Renewable portfolio standards are state- or local-level policies that mandate all or certain types of electricity producers to supply a minimum share of their electricity from designated renewable resources. Twenty-nine states and the District of Columbia have RPS policies, and an additional eight states have nonbinding renewable portfolio goals.
Hawaii's previous RPS required 40% renewable energy by the end of 2030. The new policy, H.B. 623, includes interim requirements of 30% by the end of 2020, 40% by 2030, and 70% by 2040, ultimately reaching 100% renewable electricity by 2045. The state has met its annual RPS obligations to date, which for 2014 was 10% renewable energy. Largely because of its isolation, the bulk of Hawaii's electricity generation continues to be from petroleum.