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Historic Linepack Usage

This report reviews the historic usage of linepack in gas pipelines over the past two years, focusing on the closing linepack data and its management within a specified range to balance seasonal demand variations. It examines the relationship between closing linepack, demand fluctuations, and residual balancing trades. Additionally, the report analyzes predicted closing linepack values at midnight for day-ahead assessments and highlights the uncertainties in early PCLP values that affect decision-making processes.

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Historic Linepack Usage

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  1. Historic Linepack Usage Review Group 291 – May 2010

  2. Historic Closing Linepack New pipelines

  3. Closing Linepack – last two years

  4. Seasonal variation with demand

  5. Clsoing linepack variation with demand

  6. Closing linepack and residual balancing trades

  7. Closing linepack and aggregate trades

  8. Predicted closing linepack - midnight day-ahead

  9. PCLP – start of the gas day

  10. PCLP – midnight on the day

  11. PCLP evolution

  12. Summary • Closing linepack is managed in a range, with seasonal variation, using residual balancing actions when required. • Large uncertainty in early PCLP values means other considerations needed for day-ahead assessment.

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