Echelon Corporation to Announce Q1, 2004 Earnings on April 15, 2004

To Comply with Federal Regulation FD, Echelon is Providing Notice of Quarterly Earnings Conference Call

(San Jose, CA - April 8, 2004) - Echelon Corporation (NASDAQ: ELON) will be holding its quarterly earnings conference call for investors and analysts on April 15 th, 2004 at 2:00 pm PDT. The earnings announcement itself is scheduled to cross the wire shortly after 1:00 pm PDT. Echelon is sending out this release regarding Q1, 2004 only to comply with Federal Regulation FD.

Financial analysts will be notified by fax which toll-free number they should call to access the Q1, 2004 conference call. Other interested parties may listen in on the conference call via live webcast at http://www.echelon.com. Alternatively, the general public may also access the call at 1-800-915-4836 (callers outside the US please use +1-973-317-5319); however, due to a limited number of available phone lines, the company asks that only those persons without web access call this number.

About Echelon Corporation
Echelon Corporation (NASDAQ: ELON) is the creator of the LonWorks platform, the world's most widely used standard for connecting everyday devices such as appliances, thermostats, air conditioners, electric meters, and lighting systems to each other and to the Internet. Echelon's hardware and software products enable manufacturers and integrators to create smart devices and systems that lower cost, increase convenience, improve service, and enhance productivity, quality, and safety. Thousands of companies have developed and installed LonWorks products and nearly 40 million LonWorks enabled processors have been shipped for use in homes, buildings, factories, trains, and other systems worldwide. Further information regarding Echelon can be found at http://www.echelon.com.

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Echelon , LonWorks, and the Echelon logo are trademarks of Echelon Corporation registered in the United States and other countries. Other marks belong to their respective holders.

Contact Information

Press Contact:	Investor Relations Contact:
Steve Nguyen Echelon Corporation +1-408-938-5272 qnguyen@echelon.com	Chris Stanfield Echelon Corporation +1-408-938-5243 cstanfield@echelon.com