Alliance Associate
Energy 2030 Endorser
(508) 836-9500
50 Washington Street, Suite 3000
Westborough MA, 01581

Conservation Services Group (CSG)

Conservation Services Group (CSG) is the U.S. market leader in designing and implementing residential energy efficiency programs. Since its founding in 1984, the company has improved the efficiency of more than 3.2 million homes nationwide. CSG works with utilities, state and federal agencies, housing authorities, communities, and others who want to reduce consumer energy use.

CSG continuously demonstrates its long-term commitment through its investment in people, innovation, and technical capability. As a strong voice for policymaking in the energy efficiency industry, CSG continues its history of advocating for and implementing programs that help homeowners, tenants, property owners, contractors, and utilities and public agencies benefit from the most comprehensive programs and latest innovations. CSG provides leading-edge expertise in building science, demand-side management, marketing, customer service, and information systems. The company also offers building science-based energy efficiency training courses for industry professionals such as contractors, HERS Raters, home energy auditors, code officials, architects, and others.

Headquartered near Boston, CSG operates offices nationwide; its customer contact centers in MA, NY, IL, OR, TN, and CA support dozens of programs. With proven, award-winning expertise in residential energy efficiency program delivery, CSG provides solutions that incorporate the latest and most comprehensive program designs and energy-efficiency technologies. Visit