Nationwide, utility customers spend about $350 billion on energy. Utilities spend about $35 billion to manage billing those customers.
Killen & Associates

A live call to a Call Center costs approximately $4, compared to online services of only a few cents.
PowerValue

It costs $1.25 to print, process and send a bill through the mail compared to $0.40 to process an electronic bill.
Chartwell

Internet use has reached 60% in the United States. As of January 2001, about 162 million people had home Internet access, while 41 million used the Internet in the office.
Neilsen NetRatings

E-commerce in the energy sector is expected to reach $170 billion in 2003.
Utility Business