South Essex Overhead Line Refurbishment

Power generation in the Thames Estuary area has long been important to the supply of electricity across the UK. This is set to continue over the coming decade as Britain strives to meet its projected future energy demands while at the same time tackling climate change.

National Grid is at the heart of this challenge, connecting people to the energy they use through our ownership and management of the national power grid.

So that we can all continue to benefit from safe, secure and reliable energy supplies, we must now undertake works along the length of our overhead line between Tilbury, Coryton and Rayleigh in south Essex.

The refurbishment programme

Our refurbishment work will replace the overhead wires and strengthen some of the pylons along the overhead line that connects our substations at Tilbury, Coryton and Rayleigh.

Over the past few months, we have been preparing for the work by inspecting the pylons and cables along the length of the 24-mile overhead line, completing ground surveys and creating access points.

We are now ready to start the refurbishment works and will be carrying out these in two stages in summer 2013 and summer 2014, each for about five months in duration.

So that we can safely work on the overhead line, we only refurbish one side of the line at a time. This means we will need to work on each pylon twice to complete the refurbishment.

Tilbury - Coryton - Rayleigh

Where are we now?

Work to upgrade the electricity line between Rayleigh, Coryton and Tilbury began in Spring.

We are currently working on parts of the line close to the A130, A13 and Sadlers Farm Interchange, A127 and B1464 London Road. This work will require scaffolding to be erected under the overhead line at road crossings and some road closures for short periods at night and lane restrictions at certain points during the project.

Next Steps

Stage One: July to September 2013

Lane Restrictions

To allow for these works the following lane restrictions will be in place:

Sunday 21 July to Sunday 15 September
A130 - One lane nearside on the Underpass Link westbound (towards London)

This is to ensure that there is enough space between the road traffic and the temporary scaffold structure during the refurbishment of the overhead line.

Road Closure

A130 Night-time closure

Thursday 5 September to Friday 6 September
A130 closed westbound

This road closure will be required at night-time between 10pm and 5am.

The A130 will be closed westbound to allow for the removal of safety barriers and any remaining equipment.

The night-time closure will be publicised by the use of advance warning signs on the road itself.


Stage Two: June 2014 to October 2014

We will come back with more details including road closures and lane restrictions, for this work closer to June 2014.

Contact us

If you have a question or enquiry related to the project you can contact us by phone or email.

Where energy comes from

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