In some situations generators that have an agreement with National Grid may need to modify the existing agreement.

To alter an existing agreement, customers will need to complete and submit a modification application to National Grid, pay the relevant application fee and submit any required technical data.

More information on the fee to be paid can be found in the document - Use of System Charges. The most recent version can be found on our charging statements page which is linked below.

If you would like to discuss the modification application or technical data required further, please contact your Customer Agreements Manager or a member of the Electricity Connections Team.