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IECR Incremental Step Size

IECR Incremental Step Size. Transmission Workstream, 5 th November 2009. Background. The Incremental Entry Capacity Release Methodology Statement: provides the rules by which National Grid will consider the release of incremental entry capacity.

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IECR Incremental Step Size

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  1. IECR Incremental Step Size Transmission Workstream, 5th November 2009

  2. Background • The Incremental Entry Capacity Release Methodology Statement: • provides the rules by which National Grid will consider the release of incremental entry capacity. • defines incremental step sizes which are offered at the QSEC auction. • provides a methodology to determine the number of incremental steps and the step size. • For a new ASEP the minimum step size is 15 GWh • When the IECR was first drafted this value was considered sufficiently small for any anticipated new and increased supplies.

  3. Potential Developments New ASEPs have been identified that • may bid in the QSEC auction in March 2010. • will have a low peak gas input (<15 GWh). • hence may have to bid for significantly more capacity than they need. • table below shows extent of potential over-bidding required.

  4. Proposal National Grid is proposing to revise the IECR: • such that the minimum incremental step size for new ASEPs is no lower than 5GWh (currently 15GWh) (paragraph 82). • smaller increments are allowed for existing ASEPs. • to improve the drafting of paragraph 82. • does not change the meaning (except as above). • to remove the references to P0 prices being set to zero (paragraph 84 and footnote). • following implementation of GCM17.

  5. Consultation

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