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.
Enduring Auction Capability Platform: A new and improved platform for procuring frequency response services
24 Nov 2023 - 3 minute read
Our new Enduring Auction Capability (EAC) platform enables market participants to bid on opportunities to deliver multiple frequency response services simultaneously for the first time.
Become a Power System Engineer for the day
16 Nov 2023 - 3 minute read
Have you ever wondered what it’s like to be responsible for keeping Great Britain’s lights on? Now you can find out by playing our Balancing the Grid game.
First Demand Flexibility Service test event to take place tomorrow night
15 Nov 2023 - 2 minute read
The first event of this year’s service will take place between 5pm and 6:30pm on Thursday night.
Households and businesses will be asked to reduce their electricity usage during this period in return for points, pounds and prizes from their registered service provider.
1.4 million businesses and households have so far signed up to participate in the service.