Over 100,000 businesses are affected by P272.

 P272 ‘Mandatory Half Hourly Settlement for Profile Classes 5-8 was raised on 20 May 2011. This Modification proposed mandatory Half Hourly (HH) Settlement for Profile Classes (PCs) 5-8 from 1 April 2014. An alternative Modification, which was identical to the original but with an Implementation Date of 1 April 2015, was subsequently developed by the P272 Workgroup. On the 29 October 2014 the Authority approved the alternative Modification with an Implementation Date of 1 April 2016.

 The amendment requires that meters in the profile classes of 05, 06, 07 and 08 (max demand meters) that are AMR are billed using half-hourly (HH) consumption by 1st April 2017

 The DCUSA (Distribution Connection Use of System Agreement) change DCP179 that introduced HH metered tariffs for non-100kW Metering Systems was raised to amend the charging arrangements for HH Metering Systems. This change was necessary to accommodate Metering Systems that would be required to register as HH following the implementation of P272. P300 ‘Introduction of new Measurement Classes to support Half Hourly DCUSA Tariff Changes (DCP179)’ was raised on 5 March 2014 to make consequential changes to the BSC to support the proposed DCP179 solution.

 The P300 Modification will provide a mechanism for Licensed Distribution Systems Operators (LDSOs) to distinguish between HH-settled customers whose network charges should be calculated on a site specific basis rather than on an aggregated basis. Measurement Class E will be split into three Measurement Classes (for HH Metering Systems that are not 100kW Metering Systems). The Authority approved this change on 15 October 2014 with an Implementation Date of 5 November 2015.

 The two Modifications, P272 and P300, will impact a number of areas of the BSC, including Performance Assurance and potentially the Performance Assurance Monitoring System (PARMS).