Defense Energy Support Center Selects EnerNOC as an Approved Demand Response Provider.

BOSTON -- EnerNOC, Inc. (NASDAQ: ENOC), a leading developer and provider of clean and intelligent energy solutions, announced today that it has been selected by the Defense Energy Support Center (DESC) as an approved demand response provider, allowing EnerNOC to pursue federal and military facilities throughout the United States.

"DESC encourages federal and military installations to do their part to use energy more efficiently, and demand response programs are a great way to meet that objective," said Larry Fratis, Head of the Electricity Branch for DESC. "Demand response is a solution that makes good business sense while delivering positive community and environmental benefits through increased efficiency and reliability of the electric power system. In addition, participation in this program is in line with the intent of the Federal Energy Policy Act of 2005, as well as service/agency sustainability goals."

By enrolling in EnerNOC's demand response network, individual federal and military facilities will earn a credit toward their electricity bills. In addition, each site that participates will have basic access to EnerNOC's PowerTrak[R] energy management platform. PowerTrak enables users to view and analyze their energy consumption data in near real-time and track efficiency gains, resulting in the ability to take additional, targeted measures to reduce overall energy consumption and costs.

"The Federal government is the largest consumer of electricity in the United States and technology-enabled solutions like demand response can have a significant impact on reducing its energy consumption and costs, as well as offer a gateway to broader energy efficiency," said Tim Healy, chairman and CEO of EnerNOC. "We are proud to be selected as a trusted demand response provider by the Department of Defense and the U.S. Federal Government, and we applaud their efforts to prioritize better energy management and sustainability."

This agreement with the U.S. Government is the latest in a series of agreements that EnerNOC has signed with state and federal entities, most recently including the State of Rhode Island and the State of Vermont. EnerNOC offers its demand response and energy efficiency programs throughout the United States in both open markets such as New England, New York, PJM Interconnection, Texas, and California, as well as under bi-lateral agreements with utilities such as the Tennessee Valley Authority, Tampa Electric Company, and Public Service Company of New Mexico. EnerNOC's patented automated demand response solutions help members of its network maximize demand reductions and associated energy savings. By managing a large, diverse portfolio of sites, EnerNOC is able to assume all financial penalties associated with non-performance, thereby mitigating risk for all participants. If you would like more information about EnerNOC's smart grid applications or enrolling your business or organization into EnerNOC's demand response network, email [e-mail] or visit www.enernoc.com.

About EnerNOC

EnerNOC, Inc. is a leading developer and provider of clean and intelligent energy solutions to commercial, institutional, and industrial customers, as well as electric power grid operators and utilities. EnerNOC's technology-enabled demand response and energy management solutions help optimize the balance of electric supply and demand. The Company uses its Network Operations Center, or NOC, to remotely manage and reduce electricity consumption across a network of commercial, institutional, and industrial customer sites and make demand response capacity and energy available to grid operators and utilities on demand. For more information visit www.enernoc.com.

About the Defense Energy Support Center

The Defense Energy Support Center's mission is to provide the Department of Defense and other government agencies with comprehensive energy solutions in the most effective and economical manner possible. For more information, visit http://www.desc.dla.mil/default.asp.

Safe Harbor Statement

Statements in this press release regarding management's future expectations, beliefs, intentions, goals, strategies, plans or prospects, including, without limitation, statements relating to the future success of EnerNOC's demand response and energy management solutions, EnerNOC's ability to successfully execute demand response agreements with federal and military facilities and the ability of EnerNOC's customers to derive financial benefits from such solutions, may constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements can be identified by terminology such as "anticipate," "believe," "could," "could increase the likelihood," "estimate," "expect," "intend," "is planned," "may," "should," "will," "will enable," "would be expected," "look forward," "may provide," "would" or similar terms, variations of such terms or the negative of those terms. Such forward-looking statements involve known and unknown risks, uncertainties and other factors including those risks, uncertainties and factors referred to under the section "Risk Factors" in EnerNOC's Quarterly Report on Form 10-Q for the period ended September 30, 2008, as filed with the Securities and Exchange Commission on November 13, 2008, as well as other documents that may be filed by EnerNOC from time to time with the Securities and Exchange Commission. As a result of such risks, uncertainties and factors, EnerNOC's actual results may differ materially from any future results, performance or achievements discussed in or implied by the forward-looking statements contained herein. EnerNOC is providing the information in this press release as of this date and assumes no obligations to update the information included in this press release or revise any forward-looking statements, whether as a result of new information, future events or otherwise.