Defining and Evaluating the Capacity Value of Distributed Generation

C Dent, A HernandezOrtiz, S Blake, D Miller, D Roberts

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Installed capacities of distributed generation (DG) are projected to increase substantially in Great Britain and many other power systems. This paper will discuss the definition of capacity value of DG arising from its ability to support additional demand without the need for new network capacity, in analogy with the definition of effective load carrying capability (ELCC) at transmission level. This calculated ELCC depends on the precise detail of its definition; in particular in a demand group fed by a pair of circuits where the double outage state dominates the calculated reliability index, the ELCC will be very small unless the generator can run in islanded mode. Finally, requirements for use in practical planning studies and development of formal planning standards will be discussed.
Original languageEnglish
Pages (from-to)2329-2337
Number of pages9
JournalIEEE Transactions on Power Systems
Issue number5
Publication statusPublished - 23 Oct 2014

Keywords / Materials (for Non-textual outputs)

  • Power system operation
  • Power system planning
  • Power system reliability
  • Risk analysis
  • Wind energy


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