LIMITED POWER OF ATTORNEY SECURITIES LAW COMPLIANCE

     The undersigned, as an officer or director of Echelon Corporation (the Corporation), 
hereby constitutes and appoints William R. Slakey, Ronald Sege, Kathleen B. Bloch and
C. Michael Marszewski and each of them, the undersigned's true and lawful 
attorney-in-fact and agent to complete and execute such Forms 144, Form ID, Forms 3, 4 
and 5 and other forms as such attorney shall in his or her discretion determine to be 
required or advisable pursuant to Rule 144 promulgated under the Securities Act of 1933, 
as amended, Section 16 of the Securities Exchange Act of 1934, as amended, and the 
rules and regulations promulgated thereunder, or any successor laws and regulations, as a 
consequence of the undersigned's ownership, acquisition or disposition of securities of 
the Corporation, and to do all acts necessary in order to file such forms with the 
Securities and Exchange Commission, any securities exchange or national association, 
the Corporation and such other person or agency as the attorney shall deem appropriate.  
The undersigned hereby ratifies and confirms all that said attorneys-in-fact and agents 
shall do or cause to be done by virtue hereof.

     This Limited Power of Attorney shall remain in full force and effect until the 
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the 
undersigned's holdings of and transactions in securities issued by the 
Corporation unless earlier revoked by the undersigned in a writing delivered to the 
foregoing attorneys-in-fact.

     This Limited Power of Attorney is executed at San Jose, CA, as of the date set forth below. 

          Signature: /s/ Robyn Denholm
          Print Name: Robyn M. Denholm
          Dated: 4/12/2012
Witness: /s/ Marsha Larsen 	
Print Name:  Marsha Larsen

Dated:  4/12/2012  STATE OF CALIFORNIA		
COUNTY OF Santa Clara

On April 12, 2012, before me, Ariel Kim, Notary Public, personally appeared 
Robyn M. Denholm, who proved to me on the basis of satisfactory evidence to be the 
Person(s) whose name(s) is/are subscribed to the within instrument and acknowledged to
 me that he/she/they executed the same in his authorized capacity(ies), and that by 
his/her/they  signature(s) on the instrument the person(s), or the entity upon behalf of 
which the person(s) acted, executed the instrument.

I certify under PENALTY OF PERJURY under the laws of the State of California that 
the foregoing paragraph is true and correct.

WITNESS my hand and official seal.

Signature: /s/ Ariel Earnfar Kim
    Notary Public