Infoenergia: to receive constantly free-of-charge infor mation of the supply (when to send the meter reading, issue date, due date, and status of the bill) via sms or e-mail, > web bill: to receive bills directly via e-mail, > visualization of bill data: to check the issue date, due date, and status of the bill, > changing how the bill is paid and the delivery address: to decide to have bills debited to one’s bank account and/or change the delivery address, > payment with a credit card, > self-reading of meter: to receive the bill always in line with actual consumption, > events calendar: an application that enables custom ers to consult the history of the events regarding single supplies, and > changes in heading of contract: to request and exe cute transfers, taking over, or new activations.