Energy Conversion Devices, Inc. Invites You to Join Its Third Quarter Conference Call on the Web

    TROY, Mich., May 11 In conjunction with Energy Conversion
Devices, Inc.'s release of its operating results for the quarter ended
March 31, 2001 on May 15, 2001, you are invited to listen to ECD's conference
call that will be broadcast live over the Internet on Wednesday, May 16, 2001
at 11:00 A.M. Eastern Daylight Time with Robert C. Stempel, chairman of ECD.

    What:        Energy Conversion Devices, Inc. Operating Results for the
                 Quarter Ended March 31, 2001

    When:        Wednesday, May 16, 2001 at 11:00 A.M. Eastern Daylight Time

    Where:       http://www.videonewswire.com/OVONIC/051601/

    How:         Live over the Internet -- Simply log on to the Web at the
                 address above

    Contact:    Ghazaleh Koefod - Shareholder Relations

    About Energy Conversion Devices, Inc.
    ECD and its network of business partners and licensees are manufacturing
cutting-edge products in three rapidly growing global markets:  energy
generation, energy storage and information technology.  ECD designs and builds
manufacturing machinery that incorporates its proprietary production
processes, maintains ongoing research and development programs to continually
improve its products and develops new applications for its technologies.
    The conference call is also available via telephone at 1-888-928-9529.
    Recorded replays of the conference call will be available on ECD's web
site (http://www.ovonic.com ) for 10 days.  To access the replay, log onto
http://www.ovonic.com/investor/index.html .  Telephone replay will also be
available (1-888-445-8683) through 5:00 P.M., EDT, Friday, May 18, 2001.
    (Minimum Requirements to listen to broadcast: The RealPlayer software,
downloadable free from http://www.real.com/products/player/index.html , and at least
a 14.4 Kbps connection to the Internet.  If you experience problems listening
to the broadcast, send an email to webmaster@vdat.com .)

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