Welcome to National Grid ESO

We make sure that Great Britain has the essential energy it needs by ensuring 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.

About us

Control Room pointing at screen - balancing the grid

Electricity Explained - May 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 last month
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ESO at heart of new future system operator

We welcome the announcement, by BEIS and Ofgem, to create a future system operator that builds on the track record and skills of the ESO with enhanced roles and responsibilities to unlock additional value for consumers and drive towards to net zero.

Future system operator
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Enabling Britain’s Clean Energy Future

Watch presentations and panel discussions from this year's Markets Forum and Roadmap event on 22 March 2022.

Watch the markets forum events


Celebrating International Women in Engineering Day 2022

We spoke to some of the incredible women in engineering at the ESO to hear what inspired them and how they would inspire the next generation.

Fintan Slye National Grid ESO

Enabling Britain’s Clean Energy Future

Our Executive Director, Fintan Slye, sets out in his keynote address to the Markets Forum and Roadmap how ESO is collaborating with industry and Government to enable a Future Energy System that is secure, clean, affordable and fair for all.

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National Grid ESO receives Strategic Innovation Fund (SIF) grant to advance development for digitising Great Britain’s energy system

National Grid Electricity System Operator (ESO) has been awarded a Strategic Innovation Fund (SIF) grant of almost £150,000 to support its Common Framework Project.

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‘Green inertia’ projects and world-first tech tell British energy success story

World-first technology and pioneering green engineering projects are set to make this a breakthrough year for the transition to clean energy and improved stability on GB’s electricity system.

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Summer Outlook 2022

In our Summer Outlook, we outline Great Britain’s projected electricity needs for the summer ahead.

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Future Energy Scenarios report 2021

Based on extensive stakeholder engagement, research and modelling, FES 2021 describes what the future of energy may look like between now and 2050.

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Road to Zero Carbon report

From coal to clean – National Grid ESO are on a journey to zero carbon.

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Electricity and me

Does boiling the kettle really sap electricity, and are energy saving light bulbs that much better than their conventional cousins?