After more than a year of hard work by regulators and stakeholders, Massachusetts has finalized the bulk of the regulations needed to implement the siting and permitting reforms enacted in the2024 Climate Act.These regulations represent the most significant overhaul of the Commonwealth’s energy permitting framework in decades and will change the playing field for developers of clean energy facilities such as solar, wind, and battery storage. But some key pieces are not yet final, and important opportunities to comment remain.

What Just Happened

On February 27, 2026, the Energy Facilities Siting Board (EFSB), Department of Energy Resources (DOER), and Department of Public Utilities (DPU) all published final rules for components of the reforms.  Those rules establish the central features of the new consolidated permitting processes for clean energy facilities that were called for by the 2024 Climate Act.

Key provisions for clean energy developers include:

• Consolidated Local Permits (225 CMR 29.00): DOER’s new regulations establish a consolidated permitting pathway that applicants may elect for small clean energy infrastructure facilities (under 25 MW for generation, under 100 MWh for storage) to obtain all required local permits through a single consolidated application.  Local governments must begin accepting these applications by October 1, 2026.
• EFSB Consolidated Permits (980 CMR 13.00): For larger facilities, the EFSB will now issue consolidated, one-stop approvals that encompass all necessary state, regional, and local approvals with review timelines capped at 15 months.  These regulations set out that process.
• De Novo Adjudications (980 CMR 14.00): Appeals from local decisions on consolidated local permits will go directly to the EFSB Director for de novo review, replacing judicial appeals.  Local governments will also have the option to refer petitions for consolidated local permits to the EFSB in the first instance if they lack the resources to perform the review.  These regulations govern those two processes.
• Pre-Filing Engagement (980 CMR 16.00): These new rules require applicants to follow specific steps for community engagement before filing at the EFSB, including public meetings and stakeholder consultations.
• Intervenor Support Grants (220 CMR 34.00): These rules implement a new program under which community groups, municipalities, and other stakeholders lacking resources to participate in proceedings before the DPU or EFSB can now apply for financial assistance—up to $150,000 per party and $500,000 per proceeding.

What Is Still in Progress

Several regulatory items remain pending with opportunities for stakeholder comments:

• Cumulative Impact Analysis & Site Suitability (980 CMR 15.00): These proposed regulations are not yet final.  When finalized, they will set requirements for assessing environmental justice impacts and site suitability for projects before the EFSB.  The EFSB is revising them based on public comments and expects to put them out soon for additional comment and to finalize them in late April 2026.
• Constructive Approval (980 CMR 17.00): The EFSB is also revising its last version of proposed (not final) rules governing constructive approval.  These rules will address what happens if the EFSB misses a statutory deadline.  A new version will be put out for further comment soon, and final regulations are expected in May 2026.
• DOER Guidelines: Four important draft guidelines implementing the local permitting regulations are open for public comment through March 13, 2026:
  • The guideline on pre-filing engagement specifies the timing, content, and documentation requirements for stakeholder outreach.  Developers should assess whether these requirements are manageable and likely to be effective.
  • A guideline on baseline health and safety standards sets standards—some arguably subjective or discretionary—that apply to all projects that pursue consolidated local approvals and incorporates state and federal requirements that local governments may be expected to enforce.  
  • A guideline on common conditions raises similar questions about subjective conditions and local enforcement authority.
  • A guideline on avoidance/minimization/mitigation measures is key because it provides detail on how DOER envisions local governments will apply conditions to projects going through the consolidated local approval process.
• Proposed rules for EFSB Application Fees (220 CMR 32.00): In addition to the proposed rules, the DPU has proposed new fee schedules for EFSB filings in docket D.P.U. 26-30.  Comments are due March 25, 2026.  EFSB fees have not been recalibrated since 1990, and EFSB review will now apply to a far-wider set of facilities.  Input from developers will be important to ensure these fees are set at appropriate levels. 

Looking Ahead

It has taken a lot of work from many stakeholders, but most of the core elements of the new permitting framework are now in place. The 2024 Climate Act had big goals for permitting reform: making permitting faster and more certain, but also more inclusive and responsive to local concerns. Stakeholders should shake any rulemaking fatigue and submit thoughtful comments on the remaining pieces.

 

Over the next year, the first projects will test the new framework.  Especially in the early implementation period, developers should make sure they understand the new rules, make informed decisions about their permitting options, and ensure compliance with new requirements, which may be complex and prescriptive.

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For questions about how these regulatory changes may affect your projects, contactZach Gersonor any member of ourEnergy and Climateteam.