Energy Suppliers » Electricity System Operator
The electricity system operator licence covers the minute by minute balancing of electricity supply and demand across Great Britain. It is held by the National Energy System Operator (NESO), the publicly owned body that took over the role from National Grid ESO.
Electricity1 companies held this licence on the Ofgem register dated 10 August 2026. Click a column heading to sort.
| Company | Company number | Other licences held |
|---|---|---|
| National Energy System Operator Ltd. | 11014226 | none |
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Disclaimer: This directory is provided for general information only. It is based on the Ofgem licensee registers dated 10 August 2026 and details may have changed since. Licence lists are not formal public register documents and should not be relied upon. This is not a government website and we are not affiliated with Ofgem, Companies House, Trustpilot or any company listed. Always verify details with the company or the relevant official register before acting on them.