Biomass generation technology is compared with the other generation technology (coal fired, oil fired, LNG fired, hydropower, ocean thermal energy conversion, photovoltaic). The biomass power generation is defined as the scale that can manage as much as biomass grown by 30km2 afforestation in North America, Indonesia, and Brazil. Annual quantity of sending end generation and power station scale of each power station are shown in table 6.3.2.

The CO2 emission per 1kWh of each generation plant can be found dividing the sum of CO2 emission on power station construction and operation (fuel burning and maintenance repair) by the amount of total generated energy, assuming durability year of each generation plant. The durability of all power stations was defined as 30 years here.

Table 6.3.3 and Fig. 6.3.1 show each plant CO2 emission based on LCA. While facilities of biomass power generation have a similarity to thermal power generation by fossil fuel, CO2 emission per unit electricity of the biomass generation has a drastic reduction because CO2 emission on the biomass combustion is not counted. About CO2 emission, biomass power

generation is a highly competitive technology to the other renewable energy generation.

Fig. 6.3.1. Unit CO2 Emission of Various Power Generation.