財団法人 電力中央研究所

電力中央研究所 研究報告書(電力中央研究所報告)
[CRIEPI Research Report]

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研究報告書 詳細情報
[Detailed Information]

報告書番号 [Report Number]
Estimation of Power Generating Cost Reduction by Introduction o Demand Response Program in Japan
概要 (図表や脚注は「報告書全文」に掲載しております)
Demand response (DR) is a tariff or program established to motivate changes in electric use by end-use customers in response to changes in the price of electricity over time or to give incentive payments designed to induce lower electricity use at times of high market prices or when grid reliability is jeopardized.
Because demand grows very slowly in Japan, it is not expected to fall into the situation that power supply and demand is stringent as in the U.S. However, there is still a need for improvement of the annual load factor. Further rise of the fossil fuel expense is expected in the future. Although some has studied DR potential in Japan from the customer-side views through pilot projects using smart meters and customer surveys so far, the cost-benefit analysis of DR introduction has not been performed yet.
Using CRIEPI's Long-term Power Generation System Expansion Model, we estimated the impact of a peak-cutting DR program on the power generation cost of Japanese power system toward 2040 as a part of the cost-benefit analysis. We assumed the peak-cutting DR program as follows. The DR program period was set three hours between 13H and 16H on the three highest days of maximum demand in a year. During the program period, it is assumed that we can reduce the demand in LT(peak)*(1-alpha/100) by the DR program. Where, LT (peak) is the peak demand in fiscal year (FY) T and alpha(%) is the peak cutting rate.
According to our result, the unit generation cost averaged during the estimation period (FY2010 – FY2040), which is total cost divided by total generated energy during the period, decreases as the peak cutting rate of DR increases. When the peak demand is cut by 1.0%, the annual road factor increases by 0.6% and the unit generation cost decreases by 0.19% compared to the non-DR case. The avoided cost of the DR program, which is a power generation cost merit by reducing 1kW of peak demand, is about 8500yen/kW on average. This avoided cost is approximately equal to the annualized unit construction cost of LNG power plant.
報告書年度 [Report's Fiscal Year]
発行年月 [Issued Year / Month]
報告者 [Author]




高山 正俊

社会経済研究所 エネルギー技術政策領域

高橋 雅仁

社会経済研究所 エネルギー技術政策領域

加藤 力也

社会経済研究所 エネルギー技術政策領域

山口 順之

社会経済研究所 エネルギー事業政策領域

キーワード [Keywords]
和文 英文
デマンドレスポンス Demand Response
費用便益分析 Cost-Benefit Analysis
発電コスト Power Genetating Cost
回避可能原価 Avoided Cost
電源構成モデル Power Generation System Expansion Model
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