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.
Decarbonise Great Britain together
Join our upcoming webinars to hear about NESO’s new responsibilities, how they will evolve, and how we can work together to deliver a net zero energy system that balances sustainability with affordability and security.
Operability Strategy Report
Find out about the system operation challenges we expect to face out to 2035, and our strategy to meeting them, as the electricity system and industry continues to decarbonise.
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.
Experiencing a power cut? Find out what to do and who to contact.
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.
Enhancing the use of storage assets in our balancing activities
16 Feb 2024 - 2 minute read
We recognise how important the impacts of our decision and system changes have on the Storage industry as we transition to net zero and want to ensure we do this in a collaborative way.
New Balancing Reserve service approved by Ofgem
9 Feb 2024 - 2 minute read
Ofgem has approved our new Balancing Reserve (BR) service, which we expect to reduce consumer costs by hundreds of millions over the next four years. We expect the service to go live next month.
ESO to make change allowing up to 300MW of flexible assets into the Balancing Mechanism
6 Feb 2024 - 3 minute read
As part of our ongoing commitment to remove barriers to participation for distributed flexibility, the ESO will soon be admitting up to 300MW of aggregated assets into the Balancing Mechanism (BM).