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Accelerated Loss Of Mains Change Programme

LoM Logo CROPPEDWe, alongside other Distribution Network Operators (DNOs) and Independent Distribution Network Operators (IDNOs), have joined forces with National Grid ESO on their 'Accelerated Loss of Mains (LoM) Change Programme'. The initiative to Futureproof generation assets and ensure compliance with new settings introduced under the Distribution Code.

The new requirements specify that the protection settings required for any new generation connecting to the network must now also be applied retrospectively to existing generation with loss of mains protection.

Loss of mains protection is used to prevent damage when issues occur on the electricity distribution network leading to the disconnection of generation unnecessarily. The effect of this, more often than not, happens when renewable generation is operating and the costs to manage any disruptions are paid for by the consumer and electricity industry. Updating loss of mains protection will therefore deliver a step change in how the electricity system can be operated allowing more low carbon power to be generated at a lower cost.

Turbines and laptop - iStock-814023320.jpgAll owners of generation installed prior to February 2018, that currently complies with EREC G59, now need to comply with new settings required for the interface protection. This means owners will need to make changes to their protection settings, and have until 1 September 2022 to do so. 

To find out more visit the Futureproof your power website.

ALoMCP Recognised Contractor Status

We've made available the contact details of a number of individuals who hold Northern Powergrid ALoMCP Recognised Contractor status, they may be able to assist you to undertake the works required to achieve EREC G59/3-7 compliance. 

For further details please email G59protectionsettings@Northernpowergrid.com.

Stakeholder Notification 

We have recently written to Stakeholders to inform them about the Accelerated Loss of Mains Change Programme and have received some requests to confirm the legitimacy of the communication. You can download a copy of the letter to confirm its authenticity by clicking here


  • Further information

    Energy Networks Association logoFor further information, please visit the Energy Network Association’s website.