Fuel cell fuel cells so efficiencies vary, but most are between 40% and 60% energy efficient. However, when the fuel cell's waste heat is used to heat a building in a cogeneration system this efficiency can increase to 85%. This is significantly more efficient than traditional coal power plants, which are only about one third energy efficient. Assuming production at scale, fuel cells could save 20–40% on energy costs when used in cogeneration systems. Fuel cells are also much cleaner than traditional power generation; a fuel cell power plant using natural gas as a hydrogen source would create less than one ounce
Ethanol fuel by country ethanol (E10) on a large scale in the local market. Beginning in 2008 Thailand started with the sale of E20 and by late 2008 E85 flexible fuel vehicles were introduced with only two gas stations selling E85. Thailand is now converting some of the cassava stock held by the government into fuel ethanol. Cassava-based ethanol productions are being ramped up to help manage the agricultural outputs of both cassava and sugar cane. With its abundant biomass resources, it is believed that the fuel ethanol program will be a new means of job creation in the rural areas while enhancing the