Ofgem published the RIIO-GD3 gas distribution price control guidance effective 1 April 2026, establishing the regulatory framework for the 2026-2031 period. The guidance is accompanied by several governance documents including the Collaborative Streetworks Governance Document, Fair Treatment Guidance, and Gas Network Vulnerability and Carbon Monoxide Initiatives (VCMI) Governance Document. This represents a new price control period under the RIIO (Revenue = Incentives + Innovation + Outputs) framework for gas distribution networks.

Gas distribution network companies must use this guidance in conjunction with the Network price control 2026 to 2031 (RIIO-3) guidance to comply with their licence conditions. Operators should review all associated governance documents and ensure their systems and processes align with the framework requirements before the control period commences. Non-compliance with licence conditions may result in regulatory enforcement action.