Implications of paradigm shift in Japan's electricity security of supply: A multi-dimensional indicator assessment

Joana Portugal-Pereira*, Miguel Esteban

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

66 Citations (Scopus)


The present study developed a series of indicators to assess the electricity generation security of supply under different energy portfolios in Japan in a post-3/11 context. A baseline and four alternative scenarios were designed assuming different shares of fossil fuel and nuclear thermal power and renewables in a 2030 timeframe. The analysis revealed that expanding endogenous energy resources together with a reduction of nuclear power and fossil fuel technologies appears to be a promising strategy to enhance electricity security of supply. Under this strategy imported fossil fuel dependence would decrease to 69.3%, whereas environmental impacts would decline 15-22%, compared to pre-Fukushima levels (baseline scenario). However, an immediate transition to grid-connected renewable energies is not realistic and would increase stress on the system reliability in the short-term, given infrastructure and technical constraints. Investment should be channelised to develop storage and back-up systems, as well as de-centralisation of supply systems to increase energy system resilience and security of supply.

Original languageEnglish
Pages (from-to)424-434
Number of pages11
JournalApplied Energy
Publication statusPublished - 2014 Jun 15
Externally publishedYes


  • Electricity generation portfolios
  • Energy security of supply
  • Hourly supply/demand balance
  • Japan
  • Nuclear power
  • Renewable energy

ASJC Scopus subject areas

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law


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