Contact form
Service
For new and existing customers,
or enquiries regarding contracts and tariffs.
Opening hours:
Monday to Friday from 7.30 am to 12 pm
and from 1.30 pm to 5 pm
Network operation
For enquiries regarding your network connection:
Opening hours:
Monday to Friday from 7 am to 12 pm
and from 1 pm to 3.30 pm
In emergencies
In case of problems, you can reach us
at our emergency number 24/7
Postal address
Address
SUDENERGIE SA
150, rue Jean-Pierre Michels
L-4243 Esch-sur-Alzette
P.O. box
B.P. 383
L-4004 Esch-sur-Alzette