Frequency Services

NESO

Automated

United Kingdom

NESO stabilises the electricity system by keeping frequency around 50Hz within a 1% range, ensuring sufficient power is available to manage expected fluctuations in supply and demand.

#frequency

#TSO

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Frequency Services

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Service details

Service type

Load reduction and load increase

Eligible technologies

All DER types

Competition frequency

Daily

Locational scope

Territory-wide

Seasonality

Year-round

Eligibility

Direct

Aggregated

Residential

Commercial & Industrial

Front-of-the-Meter

Services include Dynamic Regulation (DR), Dynamic Moderation (DM), Dynamic Containment (DC), Static Firm Frequency Response (SFFR), Mandatory Frequency Response (MFR), and Commercial Frequency Response (CFR).

Key details

Participants submit capability and price in monthly or day‑ahead auctions or bilateral agreements.

Dispatch is automatic via frequency deviation triggers or scheduled via auctions for dynamic/static services.

Settlement is via holding payments and utilisation payments depending on service and auctions.

Listing last updated on

09 September 2025

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