Time Flexibility to Reduce Climate Change Mitigation Costs for Japanese Electricity Supply Sector

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  • 時間的柔軟性を考慮した電力供給部門の温暖化問題対応戦略-電源構成モデルを用いて-
  • ジカンテキ ジュウナンセイ オ コウリョ シタ デンリョク キョウキュウ ブモ

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Abstract

The idea of greenhouse-gas credit borrowing in global or national context faces severe problems such as international and intergenerational equity issues. Though the merit of cost reduction is obvious, there is minimum possibility for such a scheme to be massively allowed in future international negotiation.<br>Still, there is a good chance for some players to use the idea of time flexibility. Through numerical model analysis this paper demonstrates the cost reduction merits of using time flexibility on a sector base, taking the Japanese utility sector as an example. Time flexibility is important specifically to the sector because of two characteristics: (1) the sector is capital intensive and has long capital turnover time, and (2) available mitigation option is limited for near future.<br>A sector like Japanese utility needs some kind of flexibility to virtually realize the merit of using time flexibility. Domestic and international emission trading systems are the most promising candidate to date.

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