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Prevention of Global Warming 02


(1) Development and use of nuclear power

[Reduction of CO2 emissions by sustaining a high operation factor of nuclear power operation]
Unlike thermal power generation, which results in emission of CO2 from burning fossil fuel, nuclear power generation does not produce CO2. This means a drastic reduction of CO2 emission can be realized simply by increasing the operating factor of nuclear power facilities. Kyushu Electric is currently promoting preventive maintenance and quality assessment to enhance equipment reliability and to maintain the level of nuclear power operation to the order of 80%. The proportion of nuclear power operation in fiscal 1999 was a high 84.0%.

Changes in nuclear power operating factor at Kyushu Electric
Changes in nuclear power operating rate at Kyushu Electric




[Effect of CO2 emission reduction]
Through harnessing sources such as nuclear power, new energy and LNG thermal power, Kyushu Electric estimates that CO2 emissions were reduced by about 48 million tons in fiscal 1999. This implies that by using these sources, CO2 emissions can be cut to half the levels expected to be emitted by conventional energy sources. Nuclear power generation in particular contributes to CO2 reduction. If the electricity during this period had been generated by thermal power instead of nuclear power, CO2 emissions would have been 2.4 times higher or about 53.5 million tons more.

Results of Kyushu Electric CO2 reduction efforts by energy type (FY1999)
Results of Kyushu Electric CO2 reduction efforts by energy type (FY1999)


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