This circular contains detailed information about the migration of Natural Gas trading for the Czech VTP Hub which is currently operated by the POWER EXCHANGE CENTRAL EUROPE, a.s. (PXE) to Powernext. The Go Live of the migration is scheduled for 08 December 2017. All Czech Natural Gas Spot and Futures Contracts will be transferred to the PEGAS trading platform and listed under the Powernext rulebook. ECC will continue to provide clearing and settlement services for these products.