The Energy to Thrive Beat the heat Reduce your electric bill by cooking outside, installing a smart thermostat and staggering your use of large appliances, especially during the "on-peak" period of 4 to 8 p.m. Visit www.CORE.coop for more energy efficiency tips. CORE ELECTRIC COOPERATIVE fin The Energy to Thrive Beat the heat Reduce your electric bill by cooking outside , installing a smart thermostat and staggering your use of large appliances , especially during the " on - peak " period of 4 to 8 p.m. Visit www.CORE.coop for more energy efficiency tips . CORE ELECTRIC COOPERATIVE fin