The change in electricity use during the "Challenge" hour will be measured against a baseline set from earlier that day. Penn has pledged to reduce its electricity use by three megawatts during the "Challenge," but is aiming for a reduction of five to six megawatts, enough energy to power approximately 500 homes for a whole year. This initiative is part of Penn's larger commitment to reduce energy use by 17 percent by 2014, as outlined in its Climate Action Plan.
Power Down visitors enjoyed free lemonade,Tastykakes, music, games, even a free giveaway of Penn beach pails for kids which grown-ups seemed to enjoy just as much, if not more.