Half of New York's power will come from renewable sources in the next 15 years, under a new state energy plan released Thursday.

According to the plan, the state will try to reduce carbon emissions by 40 percent from 1990 levels by 2030. New York now gets just under a quarter of its power from renewable sources, including, hydro, wind and solar, but that will double to 50 percent in the next 15 years, the plan says.

The state also plans to increase energy efficiency efforts by 23 percent.