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SEC 1473 (7-96) 3 JOINT FILER INFORMATION Designated Filer: Weiss, Peck & Greer, LLC Issuer & Ticker Symbol: Wattage Monitor Inc. (WMON) Date of Event Requiring 12/28/00 Statement: Name: WPG Software Fund, L.P. Address: One New York Plaza New York, NY 10004 Signature: WPG Software Fund, L.P. By: WEISS, PECK & GREER, LLC its General Partner By: /s/ Benjamin J. Taylor ----------------------- Name: Benjamin J. Taylor Title: Managing Director Name: WPG Raytheon Software Fund, L.P. Address: One New York Plaza New York, NY 10004 Signature: WPG Raytheon Software Fund, L.P. By: WEISS, PECK & GREER, LLC its General Partner By: /s/ Benjamin J. Taylor ----------------------- Name: Benjamin J. Taylor Title: Managing Director 4 Name: WPG Institutional Software Fund, L.P. Address: One New York Plaza New York, NY 10004 Signature: WPG Institutional Software Fund, L.P. By: WEISS, PECK & GREER, LLC its General Partner By: /s/ Benjamin J. Taylor ----------------------- Name: Benjamin J. Taylor Title: Managing Director Name: Benjamin J. Taylor Address: c/o Weiss, Peck & Greer, LLC One New York Plaza New York, NY 10004 Signature: /s/ Benjamin J. Taylor -----------------------

WATTAGE MONITOR INC 3