Your contract with GrDF specifies :
You will receive an aggregated monthly bill by mail. You can also consult billing details in your personalized OMEGA space online at all times during the month. At the same time, you will need to sign a transmission contract with the transporter operating the upstream network, to which the daily quantities allocated to the PITDs are assigned.
Contact your Distribution Branch for further details :
GrDF
Agence Acheminement Distribution
6 rue Condorcet
TSA 60800
75436 Paris cedex 09
Phone: +33(0)1 71 19 16 01