Those looking to go green and keep a radically progressive stance on alternative energy may want to look into warming their home with biofuels. Biofuels, derived from recently dead material, differ from fossil fuels, which are derived from long dead material, like petroleum.

Biofuel from New Hampshire-based company Simply Green is a blend of oil and another renewable energy source (usually soybean oil). While using biofuels is a great way to be forward-thinking about the environment, they also burn cleaner and reduce emissions.