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.
Markets Roadmap 2023
The roadmap sets out our market design objectives, principles and plans to reform and evolve our markets.
It details our vision for response, reserve, thermal, voltage, stability, and restoration markets as well as the Balancing Mechanism.
Our Demand Flexibility Service
Creating more flexibility on our electricity system is vital for running a clean, green and fair system of the future.
Last year we launched a new Demand Flexibility Service for winter, which incentivised consumers and businesses to reduce their power consumption at certain times.
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.
Keen to learn more about how we balance the grid? See our latest stories below.
Calling for expressions of interest
24 Mar 2023 - 1 minute read
As part of our ongoing commitment to improve the connections process we recently launched our five-point plan to address the current connections challenges in Great Britain.
New Connections Portal launched as part of commitment to reform connections process for customers
13 Mar 2023 - 2 minute read
Our new Connections Portal has launched, enabling customers to apply for connections digitally for the first time.
ESO celebrates International Women’s Day by beating industry targets and sharing what equity means to women in a variety of roles
8 Mar 2023 - 3 minute read
This year we're celebrating International Women's Day with the theme of ‘Embracing Equity’. Equity recognises that everyone has different circumstances, and this means that we need different resources and opportunities to reach the same outcome.