Welcome to ESO

We are the electricity system operator for Great Britain, making sure that Great Britain has the essential energy it needs by ensuring supply meets demand every second of every day. 

Find out what we do


Business Plan 1 end of scheme report

At the end of March, we finished the delivery of the first two years of our RIIO-2 activity (Business Plan 1). View our end of scheme report to read what we have delivered throughout BP1 and our learnings.

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Great Britain's monthly electricity stats

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

Find out about Great Britain's electricity generation and how much came from sources such as wind, solar and biomass in our monthly snapshot. 

Our control room experts continue to balance supply and demand second by second as we move into the spring months – and you can follow the electricity mix live in our carbon intensity app - available on Google Play Store and The App Store.

What would you like to see from an ESO app?

We’re currently planning for a new ESO app, and we want to hear what our customers would like to see us include. Make your voice heard with feature requests and feedback.

Take a look at the summer ahead

With winter 2022/23 now concluded we look ahead to the coming summer months. This report considers the period from April to October. As with last summer our operational view now changes focus from managing winter margins and peak demands to managing minimum demand periods.


Keen to learn more about how we balance the grid? See our latest stories below.