Mounting pressure on UK plant margins

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Report summary

In December 2012, we published an Insight report, 'UK Gas Generation, is the Strategy Clear?', examining the implications of the imminent loss of a significant quantity of conventional generation in the UK, the principal elements of the government's Electricity Market Reform (EMR) package and the related Gas Generation Strategy document. Since then, market developments in the UK have pointed towards further downward pressure on system margins and a corresponding increase in the risk that,

What's included

This report contains

  • Document

    Mounting pressure on UK plant margins

    PDF 471.49 KB

Table of contents

  • Executive Summary
  • A fuel mix shifted towards coal in the short term
  • Pressure on plant margin – mothballed gas adds to coal and oil retirements
  • Weak margins increase the level of reliance placed on remaining suppliers
  • Conclusions

Tables and charts

This report includes 5 images and tables including:


  • UK Power Supply by Source
  • Clean Spark & Dark Spreads
  • Plant Margin Cases - the Implications of Recent Announcements
  • Margin Reliance - Low Case
  • Margin Reliance - High Case

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