The Open Markets Committee (OMC) is the annual meeting between Issuing Bodies (mainly members of the AIB) and the guarantee of origin (GO) market parties, and their representative association, RECS International. See more here.
AIB Press Release - 17 Aug 2017. The Swedish Energy Agency (Energimyndigheten) was accepted as a member of the AIB and operates their own registry. EECS certificates for production devices in Sweden are issued solely by CESAR.