For now, the best thing you can do to conserve energy is to spend your money on insulating and sealing your home so that the energy you do consume is used more effectively. A couple hundred dollars spent on home weatherization can save thousands of dollars as the years pass, regardless of what method you use to heat and cool your home. Be smart, be green and conserve what you are already using and you'll save more energy and money than any money saving heater sponsor can ever hope to convince you of otherwise.