This paper intends to develop a new model for estimating the dissemination curves of the solar water heater and PV, both of which have been calculated on a nationwide basis and for each prefecture. This model is based on public research that evaluated the purchasing eagerness of this equipment based on the actual numbers of dissemination and actual diffusion rates. The newly established model of the solar water heater based on the actual dissemination of three successive types of this equipment is recognized as sufficiently reliable, for its estimation is close to the actual trend. This equipment has also been spreading by word-of-mouth through recognizing that there is an inverse proportion between the dissemination numbers of the solar water heater and the population density of the areas. The newly established PV model estimates that 5.7 millions units will be accumulated by 2020, which is quite close to the deployment scenario set by the government of Japan. However, the correlation between word-of-mouth advertising and PV dissemination is not clearly recognized at this early stage of deployment.

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The next generation LNG vaporization system has been proposed in order to promote the usage of LNG cold energy. It is composed of two regenerative Rankine cycle with sea water and waste heat from a LNG thermal power plant. It is estimated that a delivery distribution rate and an available temperature of waste water influence on the power output. It is found that a power output increases with increasing a waste water temperature due to rising vaporization pressure of mixed refrigerants. When natural gas at 7 and 3MPaG is send out in a waste water temperature of 70 °C, power output is approximately 57 and 82 kWh/ton LNG, respectively. Next, the possibility of GTCC and AHAT is investigated whether to be suitable for a waste water source of this system. And finally, when two facilities of the rated vaporization capacity (180ton/h) are installed in LNG terminals, economic potential and carbon dioxide emissions are estimated.

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The use of woody biomass as fuel for energy production has gained new attention now that it is eligible under the Feed in Tariff scheme ‘FIT’. However the supply of woody biomass is insufficient, which causes problems for starting and managing power generation businesses. This paper examines a new method of expanding woody biomass energy use.
The investigation of some current practices, that use woody biomass for energy production, has revealed that the concentration of lumber industry is an important factor affecting woody biomass supply formation. The paper analyzes regional characteristics such as the rate of forest land, sawmill capacity and population density. The investigated areas were classified into five groups, as providing a separate strategy for each group was considered a necessary measure in achieving further increases in woody biomass energy use.
In addition, this paper explores the problems related to supply and demand balance, and clarifies the characteristics of each fuel. Maintaining supply and demand balance plays an important role for expanding the use of woody biomass in the region. If demand increases, supply should be increased as well. In this regard a special attention should be drawn to co-firing of coal with biomass fuels for power generation.
This paper summarizes the planning and measuring sequence. And it presents the creation of a new entity that coordinates energy business and energy distribution throughout the whole region.

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