Enbridge Inc.
Fortis Inc.
Energir LP
ATCO Gas and Pipelines Ltd
Engie SA
Total S.E.
Electricite de France SA
Eni S.p.A
Enel SpA
Edison S.p.A.
Tokyo Gas Co. Ltd.
Daigas Group
Toho Gas Co Ltd
OAO Gazprom
Novatek
British Gas Ltd
E.ON UK Plc
EDF Energy Ltd
Sempra Energy
Atmos Energy Corporation
Southern Company Gas
Consumers Energy Coop