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Post implementation review of P305

Posted: 21 February 2017

ELEXON has conducted a 12 month review into System Prices since the implementation of BSC Modification P305 ‘Electricity Balancing Significant Code Review developments’. This modification changed the System Price calculation on 5 November 2015.

BSC Modification P305 implemented the conclusions to Ofgem’s Electricity Balancing Significant Code Review (EBSCR), and introduced a single marginal Imbalance Price, Reserve Scarcity Pricing and pricing for Demand Control actions.

This post implementation review does not take a position on the success of these changes. Instead, the report provides analysis and insight into System Prices, market conditions, behaviour and Trading Charges affected by the modification.

Using BSC data, the 12 month period from 1 December 2015 to 30 November 2016 has been compared against the same period in previous years.

The full Post Implementation Review of P305 report and a short summary and key points are available on the Operations Reports page of our website.

For further information, please email market.analysis@elexon.co.uk.