 Set up by Gasunie in 2003, it is almost identical to the National Balancing Point (NBP) in the United Kingdom and allows gas to be traded within the Dutch Gas network.The TTF is operated by an independent subsidiary of Gasunie, Gasunie Transport Services B.V., which is the Gas Transmission System Operator in the Netherlands.Wholesale gas trading at the TTF is predominantly conducted over-the-counter via interdealer brokers.