Biomass is one of the renewable energy. Which the world needs more renewable energy. However, we also need to examine whether biomass energy is green energy. Some examples of sources for biomass energy is as follows: From the agricultural waste, agricultural waste a lot that can be used for biomass energy sources, such as straw, animal manure and poultry. From energy crops, for example is jatropa , corn, etc Wood, wood can be burned, and generate heat energy, but it will produce carbon dioxide and the greenhouse effect. In the processing of biomass energy and energy conversion, we can do with the direct combustion, termokimiawi conversion and biochemical conversion. Direct combustion is the simplest energy conversion. But it will produce the greenhouse effect. Bebrapa biomasssa utilization is: Gasification, pyrolysis, liquification, etc.
Saving energy we must do, because we know that the energy we use today, such as petroleum is a limited energy. In a sense the ability of the earth to provide energy is very limited. Therefore there must be a balance between supply and consumption. How can we save energy? In daily life many things we can do to conserve energy, including a save on electricity usage. We must save electricity, is one thing we can do to save energy. how do we save on electricity usage? This can be done with the use of electricity-saving equipment, such as using lcd monitor as lcd monitor has a smaller power consumption compared to the tube.