The Bulgarian Energy Exchange is expected to start functioning in test mode on December 11th. A demonstration session will be organised, which will include registered members too. As of October 1, there are 11 500 participants in the energy market of Bulgaria, including 70 large commercial companies, 11 producers, as well as small and medium enterprises. A total of 150 energy merchants have already received registrations and licences. However, just 40 out of them are actually active.