The current use of hydroelectric energy in Japan Shunpei Furuta

1. For Hydroelectric power Net domestic energy responsible for 35% of the energy independence of our country Renewable energy generation does not emit carbon dioxide in the process Long-term fixed supply, contributing to the stability of electricity prices Quickly respond to rapidly changing demand and generation 1/6

Conventional Hydroelectric Collect the water flow to generate electricity was brought to a high place by the forces of nature, water flows to the sea end of the power through the river. 2. Kind of Hydroelectric power 2/6

2. Kind of Hydroelectric power Pumped-Storage Hydroelectric Periods of low load (mainly at night), an artificial force (pump) every time the load is concentrated to high water pumped up by the (mostly daytime) in flowing water to generate electricity, power generation is finished Make water reservoir 3/6

3.Current use of hydroelectric energy According to the demand for electricity, which controls the generator output When Sudden changes in demand or peak demand, Hydropower is utilized. 4/6

In recent years, the center of hydropower development, hydropower has been changed to small hydro (less than 1000kW in particular) from large hydro. 3.Current use of hydroelectric energy small hydro large hydro 5/6

4. conclusion There is potential for future development are small and medium hydropower. Large initial investment, have shown a long number of years required to recover costs from the small scale investment. 6/6

Thank you for attention

Reference [1] 科学技術動向 2010 年 3 月号 レポート 2/201003_fa02.html [2] 水力・地熱発電、雪氷エネルギー等の現状と取 組について [3] 水力ドットコム