Market, operations, and data

These pages contain data and support for users of the National Electricity Transmission System (NETS). Here you will find the latest operational data, details of the operational forum, transmission performance reports, and more.

Data explorer

Explore cost and volume forecasts and outcomes relating to balancing services, reserve, and response.

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Forecast volumes and costs

Breakdown of operating margin (OPMR) based on forecast volume of reserve, frequency response required, annual weighting factors for STOR contracts, and BSUoS charges.

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System balancing reports

Reports we publish relating to the commercial operation of the electricity transmission system, including MBSS and other services reports.

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Transmission performance reports

Performance reports show how well the system operation has fared through auditors' assessment of our processes and also by quantifying key reliability measures.

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C16 statements and consultations

Statements, guidelines, real-time and historic performance, and price and market data in accordance with Special Condition C16 of the Statements of the Transmission Licence.

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Transmission operational forum

Regular meetings with electricity customers to discuss the operation and performance of the electricity network.

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We maintain the system frequency between 49.5Hz and 50.5Hz, although normal operating limits of 49.8Hz to 50.2Hz normally apply.

Real-time demand data

Click here to view a graph of demand data over the last 60 minutes.

Balancing services

Find out how we keep the electricity transmission system balanced, and about tendering for balancing services.

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Industrial electricity connections

All aspects of the contracts for the connection to and use of the National Electricity Transmission System (NETS).

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Balancing and settlement arrangements

You can find operational data relating to balancing and settlement arrangments on the BM Reports website, via ELEXON. You can use this website to make trading decisions and understand market dynamics by accessing current and historic data.

Go to the BM Reports website

European collaboration

We felt it was the right time to examine the changing face of Great Britain’s electricity system and development towards European regional markets. We have found that GB consumers will benefit through continued cooperation with the European electricity system. Find out more about the opportunities and challenges for our consumers.

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