These pages contain details about the charges that users of the electricity transmission system have to pay, how they are calculated and what changes are currently being considered by the industry.
TNUoS recovers the cost of installing and maintaining the transmission system. These charges apply to suppliers and generators.
AAHEDC charges recovers assistance costs for The North of Scotland which is currently the only area specified to receive assistance. These charges apply to suppliers.
Connection and Use of System Code (CUSC)
The CUSC is the contractual framework for connection to, and use of, the National Electricity Transmission System (NETS).