In Japan, oil accounts for 60% of its energy consumption.
Besides the oil resource is limited, it is concerned that the use of fossil fuel affects environmentally, such as air pollution or destruction of ecosystem. Under this situation, natural, and clean "new energy" is required for our future life and is drawing much attention. |

|
Solar energy
From a solar vehicle to a photovoltaic power generation system on a private house and a school, utilization of the photovoltaic is on the rise. This system utilizes a principle that a insolated silicon generates power. A solar car is introduced in a marathon race as a leading car. A photo on the left shows Misaki light-house in Nagasaki prefecture.
|

|
Wind energy
In Japan, wind power facilities have been installed in about 30 sites through out the country according to a wind resource survey results. Although weather conditions affect its output, it is typical of new energy, and one of the most appropriate indigenous energy. The photo on the left shows a wind park at Tappi Point, Aomori prefecture. At present, eleven wind turbines are operating at the site. Its total capacity is 3,375 kW.
|

|
Geothermal energy
Magma under the ground has enourmous energy. And this magma is utilized as a resource of geothermal power generation. It generates power using a steam turbine by drawing hot water and steam from a well, which was drilled under the ground. In Japan, 18 units are at work at present. The photo on the left shows Hacchobaru geothermal power plant, Oita prefecture (Kyushu). Its total capacity is 110,000 kW.
|

|
Small-to-Medium Scale Hydraulic energy
In hydraulic power generation, a difference of height and water pressure are utilized as power sources. In the past, a large river was a subject of development. At present, even small to medium scaled river and agricultural water conduit are also utilized. The photo on the left is Tengu-iwa power plant, Gumma prefecture. Its capacity is 540 kW.
|

|
Ocean energy
The ocean accounts for some 71% of the whole area of the earth. And the huge amount of power of ocean has become a useful energy resource. In ocean power generation, wave, a difference of temperature, current, and tide are utilized to generate electricity. A photo on the left shows a wave power plant system at Kuju-kuri seashore, Chiba prefecture.
|

|
Recycle energy
In the past, thermal energy caused by waste incineration, and waste heat emitted from a subway station and a factory were abondoned. At present these heat is recovered and utilized effectively. A photo on the left shows a waste incineration facility of Saitama-ken East Waste Management Association, Saitama prefecture. It deals with 800 tons of wastes per day. The maximum output is 24,000 kW.
|