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• 
  Seal in Your Savings: Why Insulation and Air Sealing Matters for the Heating Season | Massachusetts | Mass Save

  November 14, 2025

  Now’s the time to insulate. See how improving your home’s insulation and air sealing boosts comfort, reduces energy use, and helps you save for the heating season.

• The Sponsors of Mass Save® Announce Inaugural Group of Climate Leaders, 19 Winners Recognized for Outstanding Efforts to Creating a Greener Future

  October 5, 2022

  The Sponsors of Mass Save today announced the inaugural cohort of Mass Save Climate Leaders. This distinguished recognition honors 19 recipients across Massachusetts for their ongoing efforts to curb energy use and lead the Commonwealth to a net zero future.

• The Massachusetts Stretch Energy Code for HERS RatersThis is a three hour webinar covering Stretch Code for HERS Raters.

  This is a three hour webinar covering Stretch Code for HERS Raters.

• MA - R6.0 The Massachusetts Stretch Energy Code for HERS Raters

  Updated for the new Stretch Energy Code.

• MA - R6.0 The Massachusetts Stretch Energy Code for HERS Raters

  Updated for the new Stretch Energy Code.

• MA - Energy Modeling for Commercial Compliance Pathways (Part 3)

  Energy modeling for commercial energy code

• MA - Energy Modeling for Commercial Compliance Pathways (Part 2)

  Energy modeling for new MA Commercial code

• C9.4 Energy Modeling for Commercial Compliance Pathways (Part 4)

  Under the new Massachusetts Stretch Code, 225 CMR 23, new commercial buildings over 20,000 square feet must use a performance path for compliance. This training series focuses on the two most common performance-based compliance options, Targeted Performance and Relative Performance.

• C.01 MA Commercial Stretch Energy Code: Targeted & Relative Performance Paths (Part 1)

  Targeted Performance: Thermal Energy Demand Intensity (TEDI) Relative Performance: ASHRAE 90.1 Appendix G Performance Rating Method 2023 Massachusetts Commercial Stretch Code

• 
  Swansea School District Takes Control to Improve Comfort, Sustainability and Make Energy-Saving Upgrades

  June 28, 2021

  To increase the comfort of students and staff and make some much-needed energy efficiency upgrades, the school district looked to partner with Mass Save® Sponsors Liberty and National Grid, as well as Honeywell and Air Masters HVAC Services of New England.