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The construction of new electricity-transmission infrastructure is construed in UK energy policy documents as necessary for achieving government targets to increase low-carbon electricity provision to combat climate change and ensure long-term energy security. Siting high-voltage overhead lines and substations is publicly controversial, however, due to their potential environmental, social, and economic impacts. Also controversial are issues of governance, procedural justice, and technological choice in decision making, particularly in light of recent legislative changes to the planning of nationally significant infrastructure projects in the UK. This study uses the Q-method to assess the discourses emerging from stakeholder and local community actor responses to line siting in the context of proposed transmission network upgrades in the southwest of England to support a new nuclear power station at Hinkley Point in …