posted or printed statements/bills

[huqqapani]

hi, I needed to know that for proving cohabitation etc. do the bills and or statements have to be posted or can these be printed online once these are issued every month.
This relates to npower energy tariffs, the cheaper tariffs are online only however you can print of the statements as soon as they are generated, are these acceptable?

[huqqapani]

Is this thread in the right sub-forum, admin please move it if it needs be.