The Entry Capacity Substitution Methodology statement (ECS) describes the methodology that National Grid uses to determine proposals for the indefinite substitution of NTS entry capacity from one NTS Aggregate System Entry Point “ASEP” (where it is not required) to another ASEP where demand for entry capacity exceeds existing quantities. In particular, it defines:
• under what circumstances National Grid will consider such substitutions; and
• the process to be undertaken by National Grid to determine its proposals to substitute capacity.
Archive: Entry Capacity Substitution Methodology Statement
Archived Methodology Statements
Gas Transmission Network Charging
Gas Transmission Connections
If you would like to contact us please send us an email.