There are several kinds of energy around our life. Nowadays, renewable energy is one of the best ways to reduce the pollution. It is generated from natural processes that are continuously replenished. Moreover, alternative energy is a term used for an energy source that is an alternative to using fossil fuels. It indicates powers that are nontraditional and have little environmental impact. Biomass is a renewable organic matter, and can include biological material derived from living, or recently living organisms, such as wood, waste, and alcohol fuels. Biodiesel is fuel made from plant oils that can be used in diesel engines. They are typically made of renewable organic raw materials such as soybean or rapeseed oils, animal fats, waste vegetable oils or microalgae oils.