Mass Save is an initiative sponsored by Massachusetts’ natural gas and electric utilities and energy efficiency service providers, including Berkshire Gas Company, Cape Light Compact, Eversource, Liberty, National Grid, and Unitil. The Sponsors of Mass Save work closely with the Massachusetts Department of Energy Resources to provide a wide range of services, incentives, trainings, and information promoting energy efficiency that help residents and businesses manage energy use and related costs.

The Mass Save Program is funded by the energy efficiency charge on all customers’ gas and electric bills.

All Mass Save Energy Specialists are certified as “Building Analysts” by the Building Performance Institute (BPI), the nation's premier credentialing, quality assurance, and standards setting organization for home performance professionals.

Yes, quality assurance inspections on weatherization installations are offered at no cost and we encourage you to request an inspection by calling 1-866-527-SAVE (7283). The program also conducts third-party random inspections of both weatherization work and home energy assessments for quality control purposes. These are separate inspections from any that may be required by local municipal building codes.

Building science standards, set by the Building Performance Institute (BPI), are used as the framework for all recommendations that are made as part of the home energy assessment. During the assessment, the Energy Specialist uses a whole-house approach to evaluate the residence, including a review of the building’s heating, cooling, and water heating systems, lighting, thermal envelope (insulation and air sealing), and appliances.

Pricing for air sealing and insulation improvements is set by the utilities and energy efficiency service providers who sponsor Mass Save. Pricing for weatherization will remain the same regardless of the contractor you use for qualified improvements.

Home Performance Contractors may also offer recommendations for additional energy related equipment or services priced at their own discretion. These services, if provided by the Contractor, may require additional payment and are at pricing that is agreed upon between the customer and the contractor. Pricing is NOT set by Mass Save for the following services: heating systems, water heating systems, air conditioning systems, solar systems, heat pumps, siding, roofing, and windows.

Mass Save works with certified Home Performance Contractors (HPCs) and Independent Installation Contractors (IICs) to provide high-quality Home Energy Assessments and insulation and air sealing installations. All HPCs and IICs have met training and certification requirements to be eligible to work within the Home Energy Services Program.

You may elect to have a contractor assigned to you, or choose from our list of Mass Save certified Independent Installation Contractors by visiting MassSave.com/FindAContractor.

To apply for rebates based on the recommendations determined during your assessment, visit MassSave.com/Rebates. You can apply online or by mail.