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Development and Introduction of New Energy




[Hydroelectric and geothermal power generation]
Hydroelectric and geothermal power generation are important domestic energy sources. As no CO2 is emitted during generation, they are also excellent power generation methods in addressing global warming issues.

Hydroelectric and geothermal powers are also characterized by the fact they are generated mainly in resource-rich natural areas, and yield only certain amounts of energy. Kyushu Electric strives to use these energy sources more efficiently while giving due consideration to the surrounding landscape and environment.

Kyushu Electric's geothermal power generating facility capacity is 39% of Japan's national total.
Hydroelectric and geothermal power
Takigami Power Station [geothermal] (Oita Prefecture)

Kyushu Electric's hydroelectric and geothermal electric power production
Kyushu Electric's hydroelectric and geothermal electric power production




[Wind and photovoltaic power generation]
One disadvantage of generation methods utilizing natural energy such as wind and photovoltaic powers is that the amount of power produced is unstable, being dependent on weather and other conditions. Power generation costs are subsequently high due to their low energy density. Under the current situation, these methods can not fulfill the task of becoming a key energy source in the way that thermal and nuclear power generation can.

However, Kyushu Electric has implemented measures such as offering subsidies to customers and continuing to conduct technical research into new energy within the company. The company also implements the favorable power purchase system, on the basis that these are clean energy sources that place little burden on the environment and have low CO2 emissions.

Installation of power generation facilities utilizing new energy
Kyushu Electric has introduced photovoltaic and wind power generation facilities in its premises to conduct technical research and collect data. Facility capacity as of the end of fiscal 1999 was 325kW (22 locations) and 1,750kW (6 units) for photovoltaic power generation and wind power generation respectively.

Kyushu Electric's new energy power generating facility capacity
 Kyushu Electric's new energy power generating facility capacity


Purchase of power from customers
Kyushu Electric supports the utilization of new energy with initiatives such as offering customers the favorable system. In this system, Kyushu Electric purchases surplus power generated at customers' wind or photovoltaic power generation facilities at the same unit price as Kyushu Electric's power supply. In fiscal 1999, Kyushu Electric purchased 3.95 million kWh (3,735 contracts) of photovoltaic power, and 2.82 million kWh (9 contracts) of wind power generation through this system.

Past record of power purchase (wind power generation) at Kyushu Electric
Past record of power purchase (wind power generation)

Past record of power purchase (photovoltaic power generation) at Kyushu Electric
Past record of power purchase (photovoltaic power generation) at Kyushu Electric

Subsidy for photovoltaic power generation facility installation
One of Kyushu Electric's larger-scale measures is to offer cooperation and support towards the "Renewable Energy Promoting People's Forum West Japan"(R.E.P.W), a NGO which undertakes activities to promote the introduction of photovoltaic power generation at households. This group actively promotes photovoltaic power generation as a means of tackling environment and energy issues. Subsidy for photovoltaic power generation
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Subsidy for photovoltaic power generation facility installation


Photovoltaic power generation promotion activities by R.E.P.W
Contents A subsidy to partially cover costs is offered to households (individuals) in Kyushu to help install photovoltaic power generation facilities
Number of subsidized installations
FY 1999 record
Network type: 88 installations (260kW)
Independent type: 1 installation (75W)
FY 2000 plan
Network type: 165 installations
Independent type: 40 installations
Subsidy amount
Network type 200,000 yen/kW
where a government subsidy is also used. (However, if the total subsidy amount including that from the government exceeds 600,000 yen/kW, it is subject to reduction)
Independent type 30,000 yen/100W
(50,000 yen/100W for FY 2000)
Subsidy scale Max. 3kW
Evaluation Effects are evaluated and published by the evaluation council with third party attendance, based on operational data provided by the customer for a period of several years after installation.
Subsidy period Three years from FY 1999
Inquiries Renewable Energy Promoting People's Forum West Japan(R.E.P.W)
Tel: +81-92-752-7769 Fax: +81-92-752-7766



Subsidy for R&D into new energy
Kyushu Electric offered researchers in Kyushu a subsidy to conduct research into better utilization of photovoltaic and wind power generation. In response, Kyushu Electric received 29 applicants and consequently selected 5 excellent research themes to receive the subsidy.
The research period is from FY 1999 to FY 2000.
Research results will be presented at a symposium Kyushu Electric will hold in FY 2001.


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