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Transforming the system
Driving towards a sustainable energy future with our final RIIO-2 business plan.

Welcome to National Grid ESO

We make sure that Great Britain has the essential energy it needs by making sure supply meets demand every second of every day. Find out more about what we do and how we keep the lights on for Great Britain.

Find out more

Power cut in your area?

Find out who to contact when there's a power cut

Data

Download our data

Find the latest Firm frequency Response data, BSUOS forecasts, and other daily demand and supply reports.

Download a code

Download code documents like the Grid Code and CUSC and see the latest modifications.

Connect to the grid

Find out about the connections process, roles and responsibilities and other useful resources to understand your connections offer.

European Network Codes (ENC)

Our FES 2020 scenarios

Ever wonder what the the future of energy could look like?

Our new FES 2020 Report is now available to download, find out what energy scenarios are in the realms of the possible.

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Electricity Explained - December snapshot

Ever wonder how much electricity is generated and used in Great Britain?

Each month, we look at how much of Great Britain's electricity generation came from sources such as wind, solar and biomass.

Find out what happened in December.

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ESO : Balancing the grid
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How we work with the electricity market to balance supply and demand

We make sure the supply of electricity from the market always matches demand. It’s what we call ‘balancing’ the system. Find out our Control Room communicates with the electricity market to do this.

ESO : Our people
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A Day in the Life of an EMR Strategy & Policy Manager

How do we manage the capacity market and CfD auctions? Spend a Day in the Life of an EMT Strategy & Policy Manager to find out more.

ESO : Electricity explained
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Record-breaking 2020 becomes greenest year for Britain’s electricity

A look back at 2020 - a record-breaking year of progress and challenges for Britain's electricity system.

ESO : Balancing the grid
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Helping generators change their settings to boost network resilience and encourage a zero carbon grid

Loss of Mains changes will boost network resilience, reduce electricity system costs and allow smaller, greener generators to play a greater role in balancing the grid.

Keeping the lights on throughout coronavirus

As the world tackles coronavirus, we're working hard to make sure the lights stay on.

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Everything you need to know about electricity system margins

What are electricity system margins, and why are they important in keeping the megawatts moving around Britain?

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Operability strategy report

We've published our operability strategy report which examines the work we’re doing, and the challenges we face

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Winter Outlook 2020

We've published our 2020/21 Winter Outlook, where we've set out the projections of this year's report for the winter months

Find out more

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22 January 2021

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21 January 2021

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21 January 2021
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