Grumman Butkus Association

GBA was founded in 1973 as an energy consulting firm incorporated in Illinois. In the 1970s, the firm’s work consisted mainly of energy management studies, energy grant applications, and energy consulting services. During the following decade, the firm grew and expanded its capabilities to include design of retrofits for implementation of energy conservation measures recommended in its studies, plus remodeling and renovation of mechanical/electrical systems in large buildings. Today, most of the firm’s work involves MEP design, including infrastructure assessments and upgrades, building renovations, new construction, commissioning, and retro-commissioning services. GBA now operates four offices with a staff of about 150 engineers and support professionals.