Power lines bring energy to homes all across America, but soon they could
carry high-speed Internet service as well. On June 1, federal proposed rules for
Broadband over Power Lines (BPL) go into effect. At that point, power
companies can sell broadband services over power lines in every market in the United
States.
http://www.csmonitor.com/2004/0426/p16s01-wmgn.html