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• Mass Save | Mass Save Sponsors’ Residential Energy Efficiency Programs

  Find energy-saving programs and incentives from the Sponsors of Mass Save.

• Massachusetts Home Energy Services | Free Energy Audits for Your Home

  No-cost on-site assessments and energy saving products. 90 percent off up to $3,000 toward recommended insulation improvements for each individual unit if all eligible units participate in a 1-4 unit building.

• Sponsors of Mass Save® Announce Municipal Energy Manager Grants for 63 Cities and Towns Across Massachusetts

  June 25, 2025

  As part of their longstanding commitment to energy efficiency for cities and towns throughout Massachusetts, the Sponsors of Mass Save® today announced the recipients of the inaugural Mass Save Municipal Energy Manager Grant program. The funding will be used to hire 24 energy managers across the state, each of whom will lead efforts to reduce energy use and cut carbon emissions in municipal buildings.

• The Sponsors of Mass Save® Expand Energy Efficiency Access for Small Businesses with 2026 Main Streets Initiative

  June 15, 2026

  As a part of their ongoing efforts to expand access to energy efficiency services and incentives for small businesses across the Commonwealth, the Sponsors of Mass Save® are continuing the 2026 Main Streets initiative.

• Statement on the Massachusetts Executive Office of Energy and Environmental Affairs’s (EEA) Statewide Greenhouse Gas Reduction Goals Announcement

  July 16, 2021

  The Massachusetts Program Administrators (Sponsors of Mass Save®) support the Commonwealth’s efforts to reduce carbon emissions and are proud of our work to help Massachusetts be a national leader in the clean energy economy.

• News & Events

  See what's happening in your community.

• 2023 Residential Whole-House Mechanical Ventilation

  Types of Mechanical ventilation.

• 2023 Residential Mechanical Ventilation for Code Compliance

  Mechanical ventilation and the code.

• MA- Energy Modeling for Commercial Compliance Pathways (Parts 1- 4)

  Understand the modeling requirements associated with the Targeted Performance Path and the Relative Performance Path for MA Commercial Stretch Energy Code compliance. Comprehend the modeling requirements for special cases including core-and-shell projects and first-time tenant fit outs. Develop a high-level, basic understanding of MA Stretch 2023 mandatory requirements and the types of 90.1 mandatory requirements that projects are required to comply with. Understand how to use energy modeling results to extract the information needed to demonstrate compliance with the Targeted Performance Path. Learn to establish model inputs for specific systems and components. For example, OA CFM rates for the Targeted Performance Path. Articulate energy modeling requirements of the Relative Performance Path that deviate from the ASHRAE 90.1 Performance Rating Method. List the documentation that must be submitted to code officials for projects following performance paths of compliance.

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

  This is Part 1 of a two part series covering the Commercial Stretch Energy Code.