ROCHESTER, NY—January 8, 2004—Mpower Communications Corp. (AMEX:MPE), a leading provider of broadband high-speed Internet access and local and long distance voice services, will be making an investor presentation on Friday, January 9, 2004 at 11:00 a.m ET. The presentation is part of Needham & Company's Sixth Annual Growth Conference held at the New York Palace Hotel located at 455 Madison Avenue in New York City.

Mpower Communications Chairman and Chief Executive Officer Rolla P. Huff will present an overview of the company, its growth strategies and position within the telecommunications industry.

A webcast of this presentation will be available at http://www.wallstreetwebcasting.com/webcast/needham7/mpow.ob/

About Mpower Holding Corporation
Mpower Holding Corporation (AMEX:MPE) is the parent company of Mpower Communications, a leading facilities-based broadband communications provider offering a full range of data, telephony, Internet access and Web hosting services for small and medium-size business customers. Further information about the company can be found at www.mpowercom.com.