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.
Regional Energy Strategic Planner (RESP) role
Ofgem has announced that the Future System Operator (FSO) will be taking on a new role as the RESP to ensure energy networks are regionally coordinated across fuel vectors and between geographies.
To give you some insight into the world of balancing the grid, we’ve developed a game where you can attempt to keep the grid stable while facing some of the challenges our control room operatives experience daily.
Our Demand Flexibility Service is back - enabling households and businesses to earn rewards for shifting electricity usage outside of peak demand hours this winter.
Join our webinars on 11 December or 13 December to hear our plans to become the independent, whole energy, Future System Operator (FSO) and the role you can play in achieving a net-zero energy system.
Great Britain's monthly electricity stats
Ever wonder how much electricity is generated and used in Great Britain?
See 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 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.
Demand Flexibility Service approved for 2023/24 winter
27 Oct 2023 - 3 minute read
Energy regulator Ofgem has today granted approval to our Demand Flexibility Service (DFS) which will be available from 30 October 2023.
Enhancing Energy Storage in the Balancing Mechanism
23 Oct 2023 - 2 minute read
On 16 October, we welcomed over 75 stakeholders from across the energy industry to our ‘Enhancing Energy Storage in the Balancing Mechanism’ event where we outlined our plan to enhance the use of storage assets in our balancing activities and the timelines to achieve this.
Demand Flexibility Service 2023/24 threshold for competitive market pricing announced
20 Oct 2023 - 3 minute read
On 31 August, we submitted our plans to the regulator for the return of the Demand Flexibility Service (DFS) this winter and the updated contract terms. Since then, we have been engaging with industry partners and a variety of stakeholders to drive awareness and participation in DFS this winter, ahead of formal regulatory approval.