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Although nuclear power is considered a low carbon power generation source, its legal inclusion with renewable energy power sources has been a subject of debate and classification. Statutory definitions of renewable energy usually exclude many present nuclear energy technologies, with notable exceptions in the states of Utah,〔(Utah House Bill 430, Session 198 )〕 and Arizona in the United States,〔Arizona House Bill 2701. By 2025 15% of electricity used by retail customers would have to come from the listed sources. ()〕 where only a particular implementation of nuclear fission with "waste"/fuel recycling meets the state's criteria.〔(S. Smith, "Introduced Bill: Renewable Energy; Definition," Arizona State Senate, SB 1134, January 2015. ''nuclear energy from sources fueled by uranium fuel rods that include 80 percent or more of recycled nuclear fuel and natural thorium reactor resources under development'' )〕 Dictionary sourced definitions of renewable energy technologies often omit or explicitly exclude mention to every nuclear energy source, with an exception made for the natural nuclear decay heat generated within the Earth/geothermal energy.〔 The most common fuel used in conventional nuclear fission power stations, uranium-235 is "non-renewable" according to the Energy Information Administration, the organization however is silent on the recycled fuel of MOX. Similarly, the National Renewable Energy Laboratory does not mention nuclear power in its "energy basics" definition. In 1987, the World Commission on Environment and Development (WCED) classified fission reactors that produce more fissile nuclear fuel than they consume (breeder reactors, and if developed, fusion power) among conventional renewable energy sources, such as solar and falling water. The American Petroleum Institute likewise does not consider conventional nuclear fission as renewable, but that breeder reactor nuclear fuel is considered renewable and sustainable, and while conventional fission leads to waste streams that remain a concern for millennia, the waste from efficiently burnt up spent fuel requires storage for no more than a thousand years.〔(【引用サイトリンク】title=Key Characteristics of Nonrenewable Resources )〕〔(pg 15 see SV/g chart, without "TRU" or trans-uranics being present, the radioactivity of the waste decays to levels similar to the original uranium ore in about 300–400 years )〕〔(MIT spent fuel radioactivity comparison, table 4.3 )〕 The monitoring and storage of radioactive waste products is also required upon the use of other renewable energy sources, such as geothermal energy.〔http://www.epa.gov/radiation/tenorm/geothermal.html Geothermal Energy Production Waste.〕 ==Definitions of renewable energy== Renewable energy flows involve natural phenomena, which with the exception of tidal power, ultimately derive their energy from the sun(a natural fusion reactor) or from geothermal energy, which is heat derived in greatest part from that which is generated in the earth from the decay of radioactive isotopes, as the International Energy Agency explains:〔IEA Renewable Energy Working Party (2002). ''Renewable Energy... into the mainstream'', p. 9.〕 Renewable energy resources exist over wide geographical areas, in contrast to other energy sources, which are concentrated in a limited number of countries.〔 In ISO 13602-1:2002, a renewable resource is defined as "a natural resource for which the ratio of the creation of the natural resource to the output of that resource from nature to the technosphere is equal to or greater than one". 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nuclear power proposed as renewable energy」の詳細全文を読む スポンサード リンク
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