Website maintenance as we prepare to become the National Energy System Operator (NESO)

To enable our transition from National Grid ESO to becoming the National Energy System Operator (NESO), nationalgrideso.com will enter maintenance mode from 5pm Monday 30 September, before launching as NESO at 5am Tuesday 1 October.

You can find more information on our Helping our customers get ready for NESO section.

If you need any support or have any questions on these changes, please contact us on box.customerservice@nationalgrideso.com or 0800 464 3621.

Helping our customers get ready for NESO

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GC0155 Workgroup Meeting 18