Next Generation of GREEN Energy -- Demonstrate the latest in fuel cell technology! Using ethanol as its fuel source, this kit includes tools to create hours of electricity without combustion. Bio energy is energy derived from biomass or materials derived from recently living organisms or their metabolic byproducts. -- Biofuels can be broadly defined as a combustible fuel produced from biomass including solid, liquid, or gas forms of fuel derived from recently dead biological material, most commonly plants. This device uses biofuel and runs non-stop for days, providing an amazing demonstration of next-generation fuel cell technology.