- Back
- Who we are
- Electricity explained
- Future of energy
-
Industry information
- Back
- Home
- Industry information
- Connections
- Balancing Services
-
Charging
- Back
- Industry information
- Charging
- Balancing Services Use of System (BSUoS) charges
- Transmission Network Use of System (TNUoS) charges
- Assistance for Areas with High Electricity Distribution Costs (AAHEDC)
- Connection charges
- Charging guidance
- Charging policy developments
- Charging statements
- Submit a charging query
-
Codes Homepage
- Back
- Industry information
- Codes Homepage
- Connection and Use of System Code (CUSC)
- Grid Code (GC)
- System Operator Transmission Owner Code
- Security and Quality of Supply Standard (SQSS)
- Balancing Settlement Code (BSC)
- European Network Codes (ENC)
- Codes calendar
- Code changes: Beginner's Guide
- About the Codes Team
-
Industry Data and Reports
- Back
- Industry information
- Industry Data and Reports
- System Incidents Report
- Balancing services performance monitoring report
- Data finder and explorer
- Forecast volumes and costs
- GB Electricity System Operator Daily Reports
- System balancing reports
- Monthly transmission loss data (4l)
- System constraints
- Voltage costs
- Keeping the lights on throughout coronavirus
- Accelerated Loss of Mains applications
- Our consultation responses
- Our strategy
- Research & publications
Our response to coronavirus
Find out how we're working to keep Great Britain’s lights on reliably throughout the outbreak
ESO
About the Codes Team
Our team of code administrators oversees all aspects of the code modification processes and related meetings. We’re here to help, so please feel free to contact us directly, or have a look through our guidance documents on the Help and support page.
Code Administration Code of Practice
To make sure we’re completely transparent in our modification processes and that we’re protecting the interests of small market participants, we’ve adopted the Code Administration Code of Practice (CACoP), which was established following Ofgem’s code governance review.
Committed to Continuous Improvement
We’re always looking to improve the way we do things, which is why your feedback is so important. It was your feedback, as well as the commitments we made as part of The ESO Incentive Forward Plan 2019-21, that led us to introduce:
Modification Tracker
Updated on the 7th calendar day of the month or the next working day where the 7th is a non-working day, the modification tracker provides transparent, easily accessible information on all modification proposals across CUSC, Grid Code, STC and SQSS.
ESO Code Administrator Annual Report 19-20
Our first annual report includes an overview and summary of our key metrics and activities for the year 2019-2020.
If you have any other suggestions, please drop us a line at code.administrator@nationalgrideso.com.