Terraz Consultant Group TCG and commissioning engineer for the government and commercial sectors. With more than 500 professionals across 18 offices, we provide a full range of engineering services for projects of every size and budget: from global headquarters to small office renovations We’ve been at the forefront of innovation since the firm was founded by Terrence... to design complex, mechanical and electrical systems at the heart of iconic structures. We are excited about the future. Our energy and simulation modeling enable clients to predict design implications across entire project life cycles and pursue carbon neutral buildings. Above all, we build long-term relationships with our clients—some of whom we have partnered with for more than five decades—and attract the industry’s best talent through a learning, diverse and collaborative culture.