Major electricity link between Kent and Suffolk receives government approval

The Government has approved Sea Link, a major electricity transmission project connecting Suffolk and Kent. The proposed 2-gigawatt connection is intended to strengthen Britain’s electricity network, improve the movement of power between regions and support longer-term energy security.

What is the Sea Link project?

Sea Link is a proposed undersea electricity connection being developed by National Grid.

It will provide additional capacity to move electricity between Suffolk and Kent, helping transport power from areas where it is generated to those where it is needed.

The Government says the connection will be capable of carrying the equivalent of enough electricity to power approximately two million homes.

This is a measure of transmission capacity rather than a guarantee of electricity supply to a particular number of properties.

The project received government approval on 30 October 2026.

Why does Britain need more electricity transmission capacity?

Electricity generation and electricity demand are not always located in the same places.

As more renewable electricity enters the system, additional transmission infrastructure is needed to move power efficiently around the country.

Without sufficient capacity, electricity generators may sometimes be instructed to reduce output because the network cannot accommodate all the power being produced.

New connections are intended to reduce these constraints.

They may also provide greater operational flexibility within the electricity network.

Will Sea Link prevent power cuts?

Not necessarily.

Although additional transmission capacity can contribute to a more resilient electricity system, it does not eliminate the possibility of local power interruptions.

Many household power cuts occur because of faults affecting local distribution networks, including damage caused by storms, falling trees or equipment failures.

Sea Link is a major infrastructure project, not a household backup power system.

Its approval also does not mean that the connection is already operational.

Construction and commissioning must take place before the project can deliver its intended benefits.

What does this mean for household preparedness?

Improvements to national electricity infrastructure are important, but households should continue to prepare for occasional local outages.

A charged power bank, reliable torch and battery-operated radio can help during shorter interruptions.

Households relying on electrically powered medical equipment should also consider appropriate backup arrangements and register for additional support where eligible.

For more information, see Prepper Weekly’s guides to preparing for a power cut and portable power stations for home emergencies.

Source: Department for Energy Security and Net Zero: Major undersea power cable given green light. Published 30 October 2026.