Draft Determinations on RIIO-2 Re-opener Applications 2025: Electricity Transmission Medium Sized Investment Projects

Draft Determinations on RIIO-2 Re-opener Applications 2025: Electricity Transmission Medium Sized Investment Projects | Ofgem Please enable JavaScript in your web browser to get the best experience. BETA This site is currently in BETA. Help us improve by giving us your feedback . Close alert: Draft Determinations on RIIO-2 Re-opener Applications 2025: Electricity Transmission Medium Sized Investment Projects Publication type: Consultation Publication date: 10 December 2025 Last updated: 2 March 2026 Closed date: 20 January 2026 Status: Closed (with decision) Topic: Electricity transmission Related consultations: RIIO-2 Re-opener Applications 2025: Electricity Transmission, Electricity Distribution and Gas Distribution Show all updates Print this page Share the page Share on Facebook Share on Twitter Share on LinkedIn We are consulting on our Draft Determinations and draft direction for five Electricity Transmission Medium Sized Investment Project applications. Details of outcome We consulted on our assessment of the application from National Grid Electricity Transmission (NGET) for additional allowances for five projects submitted using the Medium Sized Investment Projects (MSIP) re-opener mechanism between 10 December 2025 and 19 January 2026. Following our review of the responses to our consultation, we are now publishing our Final Determinations for these five MSIP projects. Read the full outcome RIIO-2 NGET MSIP Re-opener Applications 2025 Final Determinations [PDF, 186.05KB] RIIO-2 NGET MSIP Re-opener Applications 2025 Consultation Responses [ZIP, 2.67MB] Original consultation Consultation description As part of the RIIO-2 price control, network companies can apply for additional allowances via re-opener mechanisms. We are consulting on our proposals following our assessment of five Medium Sized Investment Project (MSIP) applications submitted by National Grid Electricity Transmission (NGET) in January 2025. Who should respond We would like views from people with an interest in electricity transmission networks. We would also welcome responses from other stakeholders and the public. How to respond Submit your responses by 19 January 2026 by emailing reopenerconsultations@ofgem.gov.uk . Consultation documents RIIO-2 NGET MSIP Re-opener Applications 2025 Draft Determinations [PDF, 420.47KB] Print this page Share the page Share on Facebook Share on Twitter Share on LinkedIn All updates 02 March 2026: Added consultation responses and updated consultation status to 'closed with decision' Close