Biofuels, nuclear energy and coal are the worst choices for energy alternatives to petroleum products and wind, solar, geothermal, tides and waves are the best, according to results from the first quantitative, scientific evaluation of the proposed, major, energy-related solutions that assesses not only their potential for delivering energy for electricity and vehicles, but also their impacts on global warming, human health, energy security, water supply, space requirements, wildlife, water pollution, reliability and sustainability.

Scientists are working toward a biofuel-driven, zero-carbon home energy system. It works by burning vegetable oil to power a generator and provide electricity for the home.