National Grid plc (LON: NG, NYSE: NGG) Stock on 5 December 2025: RIIO‑T3 Ruling, £28bn Grid Plan, Dividend Outlook and 2026 Forecasts
National Grid shares closed at 1,142.5p in London on 4 December, near a 52-week high, after Ofgem approved a £28 billion upgrade to Britain’s energy networks under the RIIO-T3 framework. The stock is up about 17% year-on-year, with a trailing yield of 4.1%. Investors are also weighing half-year results and a CEO change. The company will respond to the regulatory package by March 2026.