Little Horsted

Project update

At National Grid we are at the heart of Britain’s energy system, connecting people to the energy they use, safely and reliably. We're working to build a secure, cleaner and more affordable energy system that serves everyone.

Electricity is carried from power stations, wind farms and other sources through a network of high-voltage electricity lines, owned and operated by National Grid. These electricity lines connect to hundreds of substations around the country, which then transfer electricity to local distributors, who in turn supply it at a lower voltage to local homes, schools and businesses.

We've been building a new electricity supply point (substation) near Little Horsted in East Sussex. In December 2025, we brought the new substation into operation, helping UK Power Networks supply reliable electricity to local homes and businesses and meet increasing demand.

The development ensures a continued safe and secure supply of electricity fit for the future and is part of National Grid's wider investment programme to support growth in the Southeast of England.

We reconductored one of the overhead line circuits coming in and out of Little Horsted substation as part of this work, however the second circuit is still to be completed. This does not affect the operation of the new substation, but we'll need to return to do this work at a later date.

Most of the work to build the new UK Power Networks substation on site, which is being delivered by UKPN and a separate contractor, will be complete by the end of March.