Prospects for Methanation in Japan: Techno-economic Assessment on a CO<sub>2</sub> capture, Water Electrolysis and Sabatier Reaction System Using an Electricity and City Gas Supply Model

DOI
  • Otsuki Takashi
    一般財団法人日本エネルギー経済研究所　電力・新エネルギーユニット　新エネルギーグループ　兼　計量分析ユニット　エネルギー・経済分析グループ
  • Shibata Yoshiaki
    一般財団法人日本エネルギー経済研究所　電力・新エネルギーユニット　新エネルギーグループ

Bibliographic Information

Other Title
  • 日本国内でのメタネーションの可能性：電力・都市ガス需給モデルによるCO<sub>2</sub>回収・水電気分解・サバティエ反応システムの技術経済的評価

Abstract

Methanation, or methane synthesis, attracts the energy sector in the context of sector integration and climate change mitigation. This study presents a techno-economic assessment on synthetic methane in Japan employing an electricity and city gas supply model. This model, formulated as a linear programming problem, explicitly considers a carbon recycling system, including carbon capture, water electrolysis and Sabatier reaction processes. The electricity and city gas sectors in this model are temporally disaggregated, balancing hourly consumption and supply for a year, to incorporate the intermittent output of solar and wind power (Variable Renewable Energy = VRE) as well as hourly CO2 generation profiles of thermal power plants. Simulation results imply that cost reductions of VRE as well as high carbon prices, such as 75% cost reduction of VRE (from the level in 2014) and 1000 US$/tCO2, would be crucial to boost the deployment of methane synthesis in Japan. Significant amount of VRE capacity would be necessary to decarbonize the both sectors. The results also suggest that water electrolysis and methanation in VRE rich regions, combined with inter-regional methane transportation to demand centers, could be a costefficient option to promote synthetic methane.

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Details 詳細情報について

  • CRID
    1391412326429382784
  • NII Article ID
    130007938054
  • DOI
    10.24778/jjser.41.6_266
  • ISSN
    24330531
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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