Contact us
We're here to help
Whether you're new to NESO or have an existing relationship with us, we're here to help when you need it.
Enabling you to resolve your queries faster: Access our help centre where you will find advice and answers to common and popular questions. If you need more assistance, our dedicated customer support team is here to help get you the support you need.
Committed to supporting our customers: When you contact our customer support team, we’ll get back to you quickly, providing you with a unique case reference number and update you on next steps. We’ll keep you informed on progress until your case is fully resolved and only close this once you’re satisfied. Whilst we will always aim to fully resolve your issue, if you’d like to challenge a response or raise further concerns, you can raise this through our complaints process (you can find details below).
Introducing the NESO help centre
Please visit our NESO Help Centre for answers to our most popular queries and frequently asked questions.
You can browse by popular topics or search by keyword.
Get in touch, if you can't find what you're looking for
Industry and customer
If you are unable to find the support you need via the NESO help centre, our dedicated customer support team are here to help weekdays between 9am-5pm GMT. You can also find details of our specific NESO teams in the key contact section below.
Call: 0800 464 3621
Email: [email protected]
General public
Please note that NESO doesn't supply homes or other domestic properties. If you have any further queries you may find our NESO help centre useful, or if you still need our help, please email us.
Email: [email protected]
Key contacts
If you already know which part of NESO you need to contact you can find their contact details below.
Balancing Services
Contact our balancing services team to discuss contract enquiries or payments and invoices.
Contracts enquiries
If you’re a new balancing services provider or have a query about an existing contract with us, get in touch with our team:
Call: 01926 654611
Email: [email protected]
Payments and invoices
If you’re an ancillary service provider to NESO:
Call: 01926 654613
Email: [email protected]
If you have a GTMA (Grid Trade Master Agreement) contract with us:
Call: 01926 654613
Email: [email protected]
Codes
Contact us about the industry codes managed by NESO.
Connection and Use of System (CUSC)
Email: [email protected]
Grid Code (GC)
Email: [email protected]
Security and Quality of Supply Standard (SQSS)
Email: [email protected]
System Operator Transmission Owner Code (STC)
Email: [email protected]
European Network Codes (ENC)
Email: [email protected]
"Use of System" charging
Find out how to contact us about system and connection charges, including own-bills, forecast costs, or billing methodology calculations.
Transmission Network Use of System (TNUoS) charges
Email: [email protected]
Balancing Services Use of System (BSUoS) charges
Email: [email protected]
Connection charging enquiries
Get in touch if you need help with connection charges and how they are calculated.
Email: [email protected]
Connections
Get in touch with our connections team to talk to us about connecting your asset or about an existing connection application.
Email: [email protected]
Find out more about connections
Energy outages
If you’re experiencing an energy outage, call 105 free (lines are open 24 hours a day).
Do not call your electricity supplier to report a power cut. Your DNO maintains the power lines that connect your home or business to our network. When you call 105, you will be put through to your DNO.
Managing your Connection
Get in touch with our connections team to talk to us about connecting your asset or about an existing connection application.
Email: [email protected]
Publications
If you have a general question about one of our publications or something more specific, contact our team:
Electricity Ten Year Statement (ETYS)
Find more information about Electricity Ten Year Statement
Email: [email protected]
Future Energy Scenarios
Find more information about Future Energy Scenarios
Email: [email protected]
Network Options Assessment (NOA)
Find more information about Network Options Assessment
Email: [email protected]
Winter Review, Winter and Summer Outlook
Find more information about Winter outlook
Email: [email protected]
For more information about our publications, explore our publications library.
Report a power line hazard
If you spot a potential hazard on or near an overhead electricity line, please call us urgently on 0800 40 40 90 for free (lines are open 24 hours a day).
Report a metering issue
To report a metering issue relating to your home or another non-industrial property), contact your local DNO.
Request data
Whether you’re looking for demand data, STOR or frequency response data, the NESO Data portal gives you the most up-to-date information.
Email: [email protected]
Or visit our Data Portal for information about all of our open data.
Complaints
We’re committed to providing you with excellent service – first time, every time. We know that on occasions things can go wrong and we want to resolve any problems as quickly as possible and learn from any mistakes. If you would like to escalate your feedback please email us on [email protected].
Our office addresses
NESO Operational Headquarters – Warwick
National Energy System Operator NESO
Faraday House
Warwick Technology Park
Gallows Hill
Warwick, CV34 6DA
Tel: 0800 464 3621
Wokingham
National Energy System Operator NESO
St Catherine's Lodge
Bearwood Road
Sindlesham
Nr Wokingham
Berkshire, RG41 5BN
Tel: 0800 464 3621
National Energy System Operator NESO - Glasgow
