わが国における太陽電池の価格低減に対する研究開発と導入助成の費用対効果

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2016/02/01

タイトル(英語): Cost-effectiveness of R&D and Subsidization in Japan from Solar Cell Price Reduction Point of View

著者名: 遠藤　栄一（（独）産業技術総合研究所）

著者名(英語): Eiichi Endo (National Institute of Advanced Industrial Science and Technology)

キーワード: 太陽電池，価格低減，技術進歩，量産効果，技術知識ストック，費用対効果分析　　solar cell，price reduction，technological progress，mass production effect，technology knowledge stock，cost-effectiveness analysis

要約(英語): This paper analyzes contribution ratios of technological progress and mass production effects, and cost-effectiveness of R&D and subsidization from the viewpoint of solar cell price reduction in Japan. For the analysis, contribution ratio of mass production effects by scale merit and learning-by-doing is estimated based on annual and cumulative production of solar cells and allocated into subsidy, net-metering, Feed-in Tariff and secondary effects of R&D. Contribution ratio of technological progress is estimated based on correlation between solar cell price reduction and technology knowledge stock after removing mass production effects estimated as their contribution ratio. Cost-effectiveness is analyzed based on the estimated contribution ratios and R&D expenditures and subsidy. The results of the analysis show contribution ratio of technological progress, which is contribution ratio of R&D, is around half of the total price reduction. Contribution ratio of mass production effects is around quarter and mainly based on subsidy and net metering. Cost-effectiveness of subsidy was higher than that of R&D initially, but it has dropped rapidly. In 2000s, cost-effectiveness of R&D became higher than that of subsidy. This means R&D should have been allocated more expenditures, especially on crystalline silicon solar cells, which could decrease solar cell price more cost-effectively.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.136 No.2 （2016）

本誌掲載ページ: 161-169 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/136/2/136_161/_article/-char/ja/