National Grid PLC

NG.: XLON (GBR)

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National Grid: Ofgem Final Determination for RIIO-3 an Improvement but Below Firm's Request

Tancrede Fulop

Dec 4, 2025

On Dec. 4, UK watchdog Ofgem released its final determination for the 2026-31 RIIO-3 regulatory regime. For electricity transmission networks, it approved a baseline total expenditure of GBP 10.3 billion, up from GBP 8.8 billion in the July draft determination.

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National Grid PLC

National Grid: Ofgem Final Determination for RIIO-3 an Improvement but Below Firm's Request

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