OrganisationGB

UK Power Networks

Electricity distribution network operator for London, the east and south-east of England.

In 2026, UK Power Networks operates the local electricity distribution networks serving London, the South East and the East of England.

Last refreshed: 22 October 2026

Key Question

How did grid capacity derail Nscale's proposed Loughton data centre?

Timeline for UK Power Networks

#17 19 Oct

Microsoft quits Nscale's Essex AI site

Data Centres: Boom and Backlash

View full timeline →

Background

UK Power Networks owns and maintains electricity distribution networks across London, the South East and the East of England. It carries electricity from the high-voltage transmission system to local users.

The National transmission grid sits outside its ownership. Large connections can therefore depend on reinforcement delivered by the transmission owner as well as work on UK Power Networks' local assets.

Common Questions

What is UK Power Networks?

It owns and maintains the electricity distribution networks serving London, the South East and East of England.Source: UK Power Networks

Where does UK Power Networks operate?

Its three licensed networks cover London, the South East and East of England.Source: UK Power Networks

Does UK Power Networks own the national transmission grid?

No. It operates local distribution networks, while National Grid owns the transmission network in England and Wales.Source: UK Power Networks

Why did UK Power Networks warn Nscale about Loughton?

It warned that enough grid capacity might not reach the proposed data-centre site until the 2030s because transmission upgrades were needed.Source: Reuters

Source Material

Microsoft pulls out of UK Nscale data-centre deal over power delay What's the difference between UK Power Networks and National Grid?About UK Power Networks

Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Updated 22 October 2026. Editorial standards.