Exhibit 3.1

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

OF

ECHELON CORPORATION

ARTICLE I

The name of the corporation is Echelon Corporation.

ARTICLE II

The address of the registered office of the corporation in the State of Delaware is 3500 South Dupont Highway, City of Dover, County of Kent, Delaware 19901. The name of its registered agent at that address is Incorporating Services, Ltd.

ARTICLE III

The purpose of the corporation is to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of the State of Delaware.

ARTICLE IV

The total number of shares of stock which the corporation has authority to issue is One Hundred (100) shares, all of which shall be Common Stock, $0.01 par value per share.

ARTICLE V

The Board of Directors of the corporation shall have the power to adopt, amend or repeal Bylaws of the corporation.

ARTICLE VI

Election of directors need not be by written ballot unless the Bylaws of the corporation shall so provide.

ARTICLE VII

To the fullest extent permitted by law, no director of the corporation shall be personally liable to the corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, except for liability (i) for any breach of the director’s duty of loyalty to the corporation or its stockholders, (ii) for acts or omissions not in good faith or that involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the Delaware General Corporation Law, or (iv) for any transaction from which the director derived any improper personal benefit. Without limiting the effect of the preceding sentence, if the Delaware General Corporation Law is hereafter amended to authorize the further elimination or limitation of the personal liability of a director, then the liability of a director of the corporation shall be eliminated or limited to the fullest extent permitted by the Delaware General Corporation Law, as so amended.

To the fullest extent permitted by law, the corporation is authorized to provide indemnification of (and advancement of expenses to) agents of the corporation (and any other persons to which the Delaware General Corporation Law permits the corporation to provide indemnification) through Bylaw provisions, agreements with such agents or other persons, vote of stockholders or disinterested directors or otherwise, in excess of the indemnification and advancement otherwise permitted by Section 145 of the Delaware General Corporation Law, subject only to limits created by applicable Delaware General Corporation Law (statutory or non-statutory), with respect to actions for breach of duty to the corporation, its stockholders, and others.

Neither any amendment, repeal nor modification of this Article VII, nor the adoption of any provision of this Certificate of Incorporation inconsistent with this Article VII, shall eliminate, reduce or otherwise adversely affect any right or protection of a director, officer, agent, or other person existing at the time of, or increase the personal liability of any director of the corporation with respect to any acts or omissions of such director occurring prior to, such amendment, repeal or modification, or adoption of such an inconsistent provision.

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