AUGUSTA, Maine (AP) The Maine Public Utilities Commission has approved 17 renewable energy projects, representing the largest procurement of renewable energy in Maine’s history.

Officials say the projects totaling more than 500 megawatts of energy would reduce greenhouse gas emissions by approximately 500,000 tons per year while helping the state achieve its renewable energy portfolio goals.

Democratic Gov. Janet Mills called it “a historic step” in embracing renewable energy, creating good-paying jobs, and combating climate change.

The 20-year contracts were required by legislation boosting Maine’s Renewable Portfolio Standard from 40% to 80% by 2030 and 100% by 2050.