System Operator Transmission Owner Code
The System Operator Transmission Owner Code (STC) defines the relationship between the transmission system owners and the system operator.
The System Operator-Transmission Owner Code (STC) defines the relationship between the transmission system owners and National Grid as the National Electricity Transmission System Operator (NETSO).
The STC procedures (STCPs) set out the roles, responsibilities, obligations and rights of each party in further detail. We are the code administrator for the STC and maintain the Code. All changes are subject to industry consultation and approval by Ofgem.
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