Corporate Governance - Management

Management | Board of Directors | Board Committees | Guidelines | Conduct | Contact the Board  
George P. Sakellaris
Chairman of the Board of Directors, President and Chief Executive Officer
George P. Sakellaris
Chairman of the Board of Directors, President and Chief Executive Officer


Mr. Sakellaris is the President and Chief Executive Officer, as well as the Chairman of the Board of Directors, of Ameresco. Mr. Sakellaris aspired to build an entirely product-neutral and supplier-independent energy company that had the skills, capabilities and foresight to create energy solutions that went beyond just conservation and addressed a customer’s entire energy stream including supply and demand, energy efficiency and renewable energy. As a result, he founded Ameresco in April ... 

David J. Anderson
Executive Vice President, Business Development and Director
David J. Anderson
Executive Vice President, Business Development and Director


Mr. Anderson is Executive Vice President, Business Development of Ameresco. He is a member of the founding management team and a member of the Board of Directors. Mr. Anderson has over 25 years of diversified experience in the energy industry and is responsible for the successful development and implementation of Ameresco’s strategic vision. In this capacity, he has played a key role in leading Ameresco to become one of the largest independent energy solutions companies in North America.

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Michael T. Bakas
Senior Vice President, Renewable Energy
Michael T. Bakas
Senior Vice President, Renewable Energy


Mr. Bakas has served as our senior vice president, renewable energy, since March 2010. From 2000 to February 2010, he was our vice president, renewable energy. He manages the Renewable Energy Group, which is primarily responsible for the development and operation of renewable energy generation assets both domestically and internationally. He has been instrumental in fostering and supporting legislation that promotes the use of renewable resources. In addition, Mr. Bakas is involved in corpo... 

David J. Corrsin
Executive Vice President, General Counsel and Secretary and Director
David J. Corrsin
Executive Vice President, General Counsel and Secretary and Director


Mr. Corrsin is Executive Vice President and General Counsel of Ameresco. He is also the Corporate Secretary and is a member of the Board of Directors. Mr. Corrsin has extensive experience with energy regulations, federal, state and local regulatory authorities, and complex energy construction and financing projects, gained through more than 23 years of energy-related legal practice. Mr. Corrsin oversees financial and regulatory issues of independent power, utility and energy conservation pr... 

Joseph P. DeManche
Executive Vice President
Joseph P. DeManche
Executive Vice President


Mr. DeManche has served as our executive vice president, engineering and operations since 2002. He has more than 30 years of experience in providing energy engineering, design, construction, operations and maintenance services for a full range of commercial, institutional, industrial and utility clients. He has overseen the design, construction, and operations for hundreds of millions of dollars in shared savings and performance contracts for large-scale energy efficiency upgrade projects.<... 

Mario lusi
President, Ameresco Canada
Mario lusi
President, Ameresco Canada


Mr. Iusi has served as president of Ameresco Canada since 2002. He is responsible for integrated solutions for Ameresco Canada. He brings to the company over 20 years of experience in the energy services and consulting engineering industry. From 1998 to 2002, he was president of DukeSolutions Canada, a subsidiary of Duke Energy, which Ameresco acquired in 2002.

Early in his career Mr. Iusi was a project manager for engineering services at Engineering Interface Limited in both com... 

Louis P. Maltezos
Executive Vice President and General Manager, Central Region
Louis P. Maltezos
Executive Vice President and General Manager, Central Region


Mr. Maltezos has served as our executive vice president and general manager, central region since April 2009. From 2004 until April 2009, Mr. Maltezos was our vice president and general manager, midwest region. He is responsible for ensuring the availability and support of all the necessary and qualified resources for the complete turnkey development and implementation of all the phases of energy services projects in the central region. Mr. Maltezos provides senior management oversight to al... 

Andrew B. Spence
Vice President and Chief Financial Officer
Andrew B. Spence
Vice President and Chief Financial Officer


Mr. Spence is Vice President and Chief Financial Officer of Ameresco, Inc. and its subsidiary companies. He directs and supervises Ameresco’s finance, treasury, accounting and risk management activities and is responsible for raising project capital, supervising the preparation of business plans and annual budgets, managing financial performance, and financial reporting. He helped raise over $500 million of project-related financing and negotiated the company’s corporate credit facilities. ...