TO CHANGE TO A MANDATE THE CURRENT OPTION THAT AN ELECTRIC PUBLIC UTILITY MEET UP TO TWENTY-FIVE PERCENT OF ITS RENEWABLE ENERGY AND ENERGY EFFICIENCY PORTFOLIO STANDARD (REPS) REQUIREMENTS THROUGH SAVINGS DUE TO IMPLEMENTATION OF ENERGY EFFICIENCY MEASURES THROUGH CALENDAR YEAR 2020 AND, BEGINNING IN CALENDAR YEAR 2021, MEET UP TO FORTY PERCENT OF ITS REPS REQUIREMENTS THROUGH SAVINGS DUE TO IMPLEMENTATION OF ENERGY EFFICIENCY MEASURES.