David J. Seymour

David J. Seymour, P.Eng

David J. Seymour, P.Eng
Vice President – Eastern Region








Mr. Seymour is Vice President – Eastern Region for Ameresco Canada. He is responsible for operations in Eastern Ontario. Dave has been involved with bringing a variety of energy and facility renewal services to customers throughout the region helping owners and managers achieve asset renewal and lower operating costs. He brings over thirty years of experience in project management and facilities management.

Mr. Seymour started the first branch office for Ameresco Canada (known then as Tescor Energy Services) outside of Toronto in 1993. His key responsibilities include sales, operations and management of a staff of over 20 team members in delivering energy services throughout the Eastern Region. He is responsible for the successful development and delivery of over twenty energy services agreements in the Eastern Region since establishing these branches.

Mr. Seymour earned an M.B.A. from the University of Ottawa and a Bachelor of Civil Engineering degree from Carleton University, and is a registered Professional Engineer.


Ameresco Canada Management

Mario Iusi

Mario Iusi, C.E.T.
President, Ameresco Canada

Anthony DaSilva

Anthony DaSilva
Vice President and
Chief Operating Officer, Ameresco Canada

Tim Dettlaff

Tim Dettlaff, BASc. P.Eng.
Senior Vice President of
Asset Management

Enzo Colangelo

Enzo Colangelo, P.Eng
Vice President, Central Region

Craig Piercey

Craig Piercey
Vice President of Marketing and Business Development Services

David J. Seymour

David J. Seymour, P.Eng
Vice President, Eastern Region

Douglas J. Wall

Douglas J. Wall, P.Eng
Vice President, Western Region