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Our support of the Accelerated Loss of Mains Programme


We are committed to ensuring our network is as safe, secure and reliable as possible for our customers now and in the future which is why we are supporting a new National Grid ESO-led change programme to make sure our connected generation assets meet new national guidelines.

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As we transition to a Distribution System Operator, the Loss of Mains (LoM) programme is vital to ensure the security and stability of the network. We are working with other Distribution Network Operators (DNOs) and Independent Distribution Network Operators (IDNOs), to ensure generation connected to our network and any new generation with a capacity of 50kW or above is compliant with the changes.

In the past, LoM protection may have seen generators being disconnected to stop any damage when problems occurred on the electricity distribution network. This programme is essential to ensure our customers (in this case, over 1200 generators) are fully informed and supported to meet the new requirements, and also presents a valuable opportunity to engage with those generators to get their input to help shape our future DSO business.

The programme will also allow us to realise potential flexibility services to support further decarbonisation and to create a lower carbon, greener distribution and transmission network - in turn delivering a better future, quicker for our customers.  

Are you a generator connected to our network? Read more on the new requirements, who they are relevant to, and next steps to register on the ENA portal

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Investment & Innovation

Demand for electricity is steadily rising. That’s why we are investing billions of pounds to modernise and expand the network to ensure the safety and security of your electricity supply. We are also preparing and planning for the future in our Transmission and Distribution Business Plans.

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Preparing for a power cut

It’s important we ensure our customers and communities are as prepared as possible in case of any weather or other emergencies impacting energy supplies. Click the link below to find out more about what you need to know and how you can prepare.

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