Enter to open, tab to navigate, enter to select
Transmission owner (TO)
Practical Law UK Glossary w-001-7671 (Approx. 4 pages)
Glossary
Transmission owner (TO)
This term has different meanings depending on the context in which it is used.
In the context of electricity, the owner of transmission assets. In Great Britain:
- The onshore transmission systems in England and Wales, and the north and south of Scotland are separately owned and maintained by three regional TOs. For more information, see Practice note, Electricity industry: overview.
- Offshore transmission assets are owned and maintained by competitively appointed offshore transmission owners (OFTOs). For more information, see Practice note, Anatomy of an offshore transmission project.
- Interconnectors are separately owned and maintained by interconnector developers (which may include the relevant national TOs). For more information, see Practice note, Electricity interconnectors: overview.
The onshore and offshore transmission systems have a single system operator (SO) who is responsible for ensuring the stability and security of the entire GB transmission system.
Ofgem is developing a regime for the separate ownership of new, separable and high value onshore transmission assets by competitively appointed transmission owners (CATOs). For more information, see Practice note, Competitively appointed transmission owner (CATO) projects: overview.
In the context of gas, the owner of the gas national transmission system (NTS), which is currently National Gas Transmission (NGT). NGT is also the system operator (SO) for the NTS.