<PAGE>
FILED UNDER RULE 424(c)
FILE NO. 333-76519
SUPPLEMENT TO PROSPECTUS OF
WATTAGE MONITOR INC.
DATED DECEMBER 16, 1999
The first paragraph of the cover page of the prospectus shall be
supplemented as follows:
"This prospectus covers an aggregate of 14,576,570 shares of
our common stock, which will be sold, from time to time, by
some of our shareholders, including persons who have received
shares from the initial selling shareholders after the date
of this prospectus, as reflected in the 'Selling
Shareholders' section."
The "Selling Shareholders" section shall be supplemented as follows:
<TABLE>
<CAPTION>
COMMON STOCK
------------------------------------------
NUMBER OF SHARES
OWNED PRIOR TO NUMBER OF SHARES
AND REGISTERED IN BENEFICIALLY OWNED
NAME OF SELLING SECURITY HOLDER THE OFFERING AFTER THE OFFERING
- ------------------------------- ----------------- ------------------
<S> <C> <C>
Gerald R. Alderson................. 1,713,243 0
Gail Alderson...................... 200,000 0
Alison Elliott..................... 103,274 0
Katherine Alderson................. 72,824 0
Kory Alderson...................... 72,824 0
Dorothy Piekarz.................... 41,030 0
Anne Alderson...................... 4,174 0
Jack Alderson...................... 4,000 0
Nancy Mayr......................... 4,000 0
Mark Alderson...................... 4,000 0
</TABLE>
Supplement dated February 8, 2000
