Network Asset Secondary Deliverables rebasing requirements and assessment methodology

This document provides guidance to the Distribution Network Operators (DNOs) on the rebasing methodology and Ofgem’s assessment process.

Further to Ofgem’s direction letter on 1 February 2016 and the subsequent approval of the Common Network Asset Indices Methodology v1.0 (CNAIM) on 21 October 2016, CRC 5D Part C of the Electricity Distribution Licence sets out the requirements for rebasing the Network Asset Secondary Deliverables (NASD) monetised risk target.