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S 2237

An Act defining clean energy

194th Legislature (2025-2026) Introduced by Jo Comerford

Massachusetts bill establishing statutory definition of "clean energy" to standardize eligibility across state incentive programs and renewable energy mandates.

Accompanied a study order, see S2774
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Bill Summary · S 2237

Legislative bill overview

S 2237 is a Massachusetts bill that establishes a formal definition of "clean energy" for state legislative and regulatory purposes. By creating a standardized definition, the bill aims to clarify which energy sources and technologies qualify for clean energy incentives, mandates, and programs under Massachusetts law. This addresses the ambiguity that currently exists across different state policies and agencies regarding what counts as "clean."

Why is this important

Massachusetts has numerous clean energy policies—renewable portfolio standards, tax credits, grid modernization incentives—that reference "clean energy" without consistent definitions. A statutory definition ensures uniform application across agencies, prevents regulatory confusion, and signals to investors and utilities which technologies the state considers eligible for support. This can significantly impact which projects receive funding and how utilities meet renewable energy targets.

Potential points of contention

  • Natural gas inclusion: Whether natural gas (often called a "bridge fuel") qualifies as clean energy; environmental groups may oppose inclusion while industry advocates for it
  • Nuclear power status: Whether nuclear energy counts as clean; positions divide along environmental and decarbonization priorities
  • Hydroelectric and biomass boundaries: Questions about which hydro sources and biomass feedstocks meet environmental standards, particularly regarding ecosystem impacts and carbon accounting

Compiled from official sources — confirm details with the bill’s official record.

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