CMP292: Introducing a Section 8 cut-off date for changes to the Charging Methodologies

The purpose of this modification is to ensure that the charging methodologies (all Charging Methodologies as defined in the CUSC) are fixed in advance of the relevant Charging Year to allow The Company - as Electricity System Operator - to appropriately set and forecast charges. Introducing a cut-off date for changes to the methodologies will help to reduce the risk of charges out-turning differently to the forecasts produced by the Company and created by Users.