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Improving Stockport’s electricity network

As part of our ongoing efforts to maintain an efficient supply of electricity, we routinely replace ageing assets on our network.

In January 2014, we embarked on a £15m project to replace a 40-year-old electricity substation in Bredbury.

We are now decommissioning the existing substation and replacing it with modern equipment, which will be housed inside a new purpose-built building.

What is a substation?

A substation changes the voltage of an electricity supply and connects electrical circuits. A substation does not produce electricity.

At Bredbury, the voltage of the electricity supplied from the National Grid transmission system is reduced from 275,000 volts to 132,000 volts for distribution through the Electricity North West substation to the local network.

The project

Having reached the end of its 40-year operational life, the 132kV substation at Bredbury, needs to be replaced to provide continuity of the electricity supply to Stockport and the surrounding area.

The old substation uses air to insulate the electrical equipment and requires a large area to ensure the electrical components are a safe distance from each other.

We decided to replace the existing substation with a substation that uses gas contained in pipes to insulate the electrical equipment. This type of substation takes up less room so we can move it further away from residential areas, and house it in a building.

We’ll protect it with security fencing and plant additional trees to help screen the substation from houses and enhance the existing landscape around the site.

To maintain the electricity supply, we will continue to operate the existing facility until we have completed the new substation and are ready to switch to it. Then the old substation will be dismantled.

The work will not impact on your electricity supply, and noise levels will not increase. The project is set to be completed by October 2016 and will help keep the lights on in Stockport for many years to come.

If you have any queries, please contact us

Major incident

Engineers are working to restore power to properties after severe flooding in Lancashire and Rochdale.

We are doing everything we can to restore power and we'll update you regularly on our news section and TwitterFor emergencies, please call us on 0800 195 4141.