Ofgem approves NESO dynamic response services rule changes

Ofgem published its decision on 1 July 2026, greenlighting NESO's proposed changes to the terms and conditions governing Dynamic Response Services in Great Britain. The decision covers both the Response Services Service Terms and the Response Service Procurement Rules: the two documents that define eligibility, obligations, and settlement for providers of dynamic frequency response products.

The amendments follow NESO's role as the independent system operator, which took over from National Grid ESO. No volume figures or revised procurement targets were disclosed in the published decision summary, so the operational impact on contracted MW or pricing remains to be confirmed when NESO publishes updated procurement documentation. Analysts tracking the GB balancing market should monitor NESO's response service tender results for any shift in awarded capacity or marginal clearing prices under the new terms.