What are the methods currently in use or under trial for deriving energy from biomass? The first is the traditional use outlined in paragraph C, which may be termed the “non-commercial” use of biomass energy. The second also has a long traditional history: the use of wood-fuel under boilers to generate steam. This has now been revised on an intensive scale. In a study from the Philippines, it has been estimated that a 9,100 hectare fuel wood plantation “would supply the needs of a 75 megawatt steam power station if it were not more than fifty kilometres distant”. Such a platation would use a species of fast-growing tree — leucaena leucocephala, or the giant “ipil-ipil”. The investment requirements and cost of power produced looks favourable and competitive with oil-fired power stations of similar capacity. In addition, residues from cropland after harvest and from sawmills could be used as steam- producing fuel. The steam could then be used to generate electricity.
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