著者

杉山 昌広 杉山 大志

出版者

生態工学会

雑誌

Eco-Engineering (ISSN:13470485)

巻号頁・発行日

vol.22, no.4, pp.155-165, 2010-10-31 (Released:2011-01-05)

参考文献数

104

被引用文献数

1

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We review climate geoengineering, which is receiving increasing attention due to the slow progress of global climate policy and recognition of potential catastrophic effects of climate change. Climate engineering schemes are intended to modify part of the global climate system to countervail the effect of global climate change. There are two main categories of climate engineering options: carbon dioxide removal (CDR) such as ocean iron fertilization and CO2 air capture; and solar radiation management (SRM) including stratospheric aerosol injection. SRM options are generally affordable, and timely in their effect, but come with side effects. CDR techniques tend to be costly and slow, but address ocean acidification as well as climate change. Terminating an SRM scheme would cause a rapid rise in global-mean temperature, whereas CDR does not pose such a problem. Both options entail significant uncertainties, which should be resolved through further research. Discussions on governance of climate engineering have already begun at various forums, mainly led by the United Kingdom and the United States.

著者

星野 優子 杉山 大志

出版者

一般社団法人 エネルギー・資源学会

雑誌

エネルギー・資源学会論文誌 (ISSN:24330531)

巻号頁・発行日

vol.32, no.1, pp.22-27, 2011 (Released:2019-08-08)

参考文献数

15

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We compared the generation costs of photovoltaic (PV) with thermal and nuclear power during the period of the recent price surge of fossil fuels and raw materials by a bottom up analysis using a Japanese life cycle assessment (LCA) data for power plants. Although the steep rise of fossil fuel price had spurred the political mood in favor for renewable energy, we found that the impacts on the cost of PV systems by the price rise were not necessarily small compared to those on the costs of thermal or nuclear power. Due to the price hike of materials from 2003 to 2008, the cost of a PV system had increased by 2.7 yen per kWh. It is close to the price increase of coal power by 3.5 yen per kWh in the same period due to fuel and material price hike. Moreover, the impacts on the cost of a nuclear power were as small as 0.4 yen per kWh in the same period, in spite of the steep rise of uranium price. We conclude that a surge of resource and energy price does not necessarily make PV more cost competitive against nuclear and fossil fuel power, since PV is more material intensive than nuclear and fossil fuel power and the material price also surges when the fuel price does.

著者

杉山 大志

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.123, no.9, pp.578-581, 2003-09-01 (Released:2008-04-17)