We are becoming a separate company

In April 2019, the Electricity System Operator is becoming a separate company within the National Grid Group. Find out more about what this change will mean.

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
CMP303 Improving local circuit charge cost-reflectivity Current 21 Mar 2019
CMP312 Correcting erroneous legal text in Section 14 following implementation of CMPs 264/5 (consequential) Current 18 Mar 2019
CMP304 Improving the Enhanced Reactive Power Service by making it fit for purpose Current 15 Mar 2019
CMP285 CUSC Governance Reform – Leveling the Playing Field Current 12 Mar 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 7 Mar 2019
CMP281 'Removal of BSUoS Charges From Energy Taken From the National Grid System by Storage Facilities' Current 5 Mar 2019
CMP280 ‘Creation of a New Generator TNUoS Demand Tariff which Removes Liability for TNUoS Demand Residual Charges from Generation and Storage Users' Current 5 Mar 2019
CMP298 Updating the Statement of Works process to facilitate aggregated assessment of relevant and collectively relevant embedded generation Current 4 Mar 2019
CMP310 CUSC section 14 changes in the event the UK leaves the EU without an agreement Current 28 Feb 2019
CMP309 CUSC changes in the event the UK leaves the EU without an agreement Current 28 Feb 2019