Section 156: Gas purchase.

The domestic gas aggregator shall issue a gas purchase order to a producer client where a customer client requires a specific volume of marketable natural gas, which is included in the domestic gas demand requirement under section 173 of this Act, provided, however, that where the producer client and customer client have entered into a gas purchase and sale agreement, the domestic gas delivery obligation shall be dealt with pursuant to such agreement which may continue to use the escrow account mechanism as provided for under section 154 (g) of this Act and where such agreement is concluded under section 110 (2) of this Act, there shall be no further involvement of the aggregator.