We’re expanding our record level of investment in Britain and our northeast territories in the US by another £10 billion, up to £70 billion over 5 years to March 2031.
This expansion recognises the broad change across today’s energy system. Demand for electricity is skyrocketing. From EVs and heat pumps to data centres, hospitals and industry, our networks must respond.
Our networks are the backbone of economic growth: enabling homes, businesses and communities to access reliable, cleaner energy, while supporting jobs and prosperity across our service territories.
This investment will increase efficiency to help industries grow and our communities thrive over the next five years and beyond.
Where we’re investing
Our investment in the UK
We’re investing around £40 billion in the UK, split between electricity transmission and distribution. This is part of the RIIO-T3 framework, which we accepted in December 2025.
~£31 billion in UK Electricity Transmission and Strategic Infrastructure like The Great Grid Upgrade and other major delivery programmes
~£9 billion in UK Electricity Distribution, supporting growing demand from heat pumps, EVs and new connections.
Our investment in the US
In the US, we’re investing around $39 billion across our regulated networks.
~£17 billion in New York, including transmission upgrades, the Upstate Upgrade and investment in New York gas through new rate cases
~£12 billion in electricity distribution modernisation in New England through our Electric Sector Modernization Plan.
National Grid Ventures
About £1 billion will be split across the Atlantic through projects such as Offshore Hybrid Assets (OHAs) in the UK and developing competitive transmission projects in the US.
