General provisions
Article 6
1. The transmission system operator shall undertake balancing actions in order to: (a) maintain the transmission network within its operational limits; (b) achieve an end of day linepack position in the transmission network different from the one anticipated on the basis of expected inputs and off-takes for that gas day, consistent with economic and efficient operation of the transmission network. 2. While undertaking balancing actions the transmission system operator shall consider at least the following in respect of the balancing zone: (a) the transmission system operator’s own estimates of demand of gas over and within the gas day for which the balancing action(s) is (are) considered; (b) nomination and allocation information and measured gas flows; (c) gas pressures throughout the transmission network(s). 3. The transmission system operator shall undertake balancing actions through: (a) purchase and sale of short term standardised products on a trading platform; and/or (b) the use of balancing services. 4. While undertaking balancing actions the transmission system operator shall take into account the following principles: (a) the balancing actions shall be undertaken on a non-discriminatory basis; (b) the balancing actions shall have regard to any obligation upon transmission system operators to operate an economic and efficient transmission network.