We are a separate company

On 1 April the Electricity System Operator became a legally separate company within the National Grid Group. Find out more about what this change means.

Connection and Use of System Code (CUSC)

The Connection and Use of System Code (CUSC) is the contractual framework for connection to, and use of, the National Electricity Transmission System (NETS).

ID Name Status Last updated Sort ascending
CMP285 CUSC Governance Reform – Leveling the Playing Field Current 21 May 2019
CMP313 CMP313 Critical Friend review period for submission of new modifications Current 21 May 2019
CMP314 CMP314 - Updating the CUSC to align Power Available with the Grid Code definition for Power Park Modules Current 21 May 2019
CMP316 CMP316: TNUoS Arrangements for Co-located Generation Sites Current 20 May 2019
CMP315 CMP315: TNUoS: Review of the expansion constant and the elements of the transmission system charged for Current 20 May 2019
CMP311 CMP311: Reassessment of CUSC credit requirements for Suppliers, specifically for “User Allowed Credit” as defined in Section 3, Part III section 3.27 of the CUSC Current 16 May 2019
CMP287 Improving TNUoS Predictability Through Increased Notice of Inputs Used in the TNUoS Tariff Setting Process Current 16 May 2019
CMP300 CMP300 - Cost reflective Response Energy Payment for Generators with low or negative marginal costs Current 15 May 2019
CMP306 Align annual connection charge rate of return at CUSC 14.3.21 to price control cost of capital Current 1 May 2019
CMP308 CMP308 'Removal of BSUoS charges from Generation' Current 30 Apr 2019