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  • Mass Save Data

    Collectively, the energy efficiency investments of these homes and businesses have helped make Massachusetts a top-ranked state for energy efficiency. Mass Save Data, provides detailed data and information on the year-to-date performance of energy efficiency in Massachusetts, including total energy savings, budgetary investments and benefits.

  • Heating and Cooling Glossary

    Expand your knowledge with this glossary of heating and cooling equipment and installation terms.

  • Medeiros Auto Body – Fall River | Case Studies | Mass Save

    As part of Liberty’s outreach effort to small businesses, an energy assessment was performed at Medeiros Auto Body. During the assessment, the energy specialist found that the auto shop could benefit from additional insulation to help regulate the temperature, air sealing to prevent any leakages, and wireless thermostats for efficient temperature control.

  • Sunovion – Marlborough | Case Studies | Mass Save

    Sunovion, a research-based pharmaceutical company dedicated to treating and preventing human disease needed to expand the HVAC System capabilities in their facilities while reducing energy usage and costs.

  • The Fields Realty Trust – Billerica | Case Studies | Mass Save

    The Fields Realty Trust 40,000 sq. ft. facility was designed to accommodate Office, R&D and high technology uses. The company was looking to reduce operating costs by incorporating energy efficiency measures.

  • 2022 Mass Save Climate Leader – Woods Hole Oceanographic Institution

    The Woods Hole Oceanographic Institution is a private, nonprofit research and higher education facility dedicated to the study of marine science and engineering.

  • Homeowners | Get Started | Mass Save
  • Mass Save | Efficiency First

    The Sponsors of Mass Save® are helping you prepare for a new heating system by increasing your home’s efficiency.

  • Path to Carbon Neutral | Mass Save

    The Mass Save energy efficiency programs continued to drive meaningful reductions in greenhouse gas emissions in 2023. These programs resulted in 223,000 metric tons of CO2 avoided. That’s the equivalent of taking over 53,000 gasoline-powered passenger vehicles off the road for one year.

  • Finch Passive Home – Cambridge | Case Studies | Mass Save

    High-performance insulation, airtight construction, and efficient VRF and ERV systems cut energy use 70%, reducing long-term operating costs with utility incentives.