E-DISTRIBUZIONE SPA,
General Electric (France),
AMPRION GMBH,
Itron (France),
KIT,
ENDESA RED,
ENDESA DISTRIBUCION,
KEMA NEDERLAND BV,
DLMS USER ASSOCIATION,
ELSTER,
CENELEC,
CURRENT TECHNOLOGIES INTERNATIONAL GMBH,
RSE SPA,
ELSTER GMBH,
Netbeheer Nederland,
ADD,
LANDIS+GYR AG,
IBERDROLA DISTRIBUCION ELECTRICA, S.A.,
STMicroelectronics (Switzerland),
Itron (United States),
ZIV