Hampden County
For Hampden County, see Massachusetts’s statewide laws and regulations below. No additional county-specific measures are listed in our research.
Mixed Data Center Policies
Massachusetts requires covered data-center projects above 25 megawatts to meet community-benefit and environmental safeguards for permits, while qualifying large projects can receive conditional tax breaks. Grid initiatives may support reliability, but their benefits are indirect; applications for the tax incentive are currently paused.
Incentives
Tax benefits
Creates a sales and use tax exemption for certified qualified data centers, covering eligible equipment, software, electricity and construction, renovation or refurbishment costs. Certified owners/operators receive a 20-year qualification period.
current law · StatewideEstablishes a state energy-supply plan intended to improve affordability and reliability, with goals—not unconditional deployment mandates—to bring 10 GW of new energy resources and 5 GW of energy storage online, under contract, or under development by 2035.Massachusetts Executive Order No. 654 (2026)
What this means
The order does not directly restrict data-center construction or operations, but it calls for examining grid reliability as large commercial customers grow and sets goals for more energy supply and storage. Those steps could modestly help data centers get reliable power, though the benefits are indirect and not guaranteed (investigate grid operation with the growth of large commercial customers; five GW of energy storage).
People behind it
- Maura T. Healey
Issued Executive Order No. 654 as Governor. The order identifies Maura Healey as its issuer.
- Executive Office of Energy and Environmental Affairs (EEA)
Assigned responsibilities to expand energy sources and storage, develop Clean Energy Ready Zone recommendations, examine transmission costs, and coordinate winter energy planning. EEA and its relevant Departments shall.
- Department of Energy Resources (DOER)
Must review existing demand and customer supply programs and is assigned coordination duties, including on winter energy planning. DOER shall publish a review.
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- Department of Public Utilities (DPU)
Directed to require utility plans and programs, review flexible interconnection proposals, and expedite review of specified measures. The DPU shall.
- Electric distribution companies (EDCs)
Each EDC must file interconnection and flexible-interconnection plans and implement approved measures. Require each electric distribution company.
- Office of Environmental Justice and Equity within EEA
Must develop models for community energy resilience hubs and analyze energy-system and resilience benefits in Burdened Areas. The Office of Environmental Justice and Equity within EEA shall.
- Executive Office of Economic Development
Must work with EEA to develop recommendations for Clean Energy Ready Zones. EEA and Executive Office of Economic Development shall.
- Department of Fire Services
Assigned coordination with EEA to support statewide safety and education initiatives for energy-storage technologies. Coordinate with the Department of Fire Services.
- Office of Energy Transformation within EEA
Must identify demand-reduction opportunities and funding options related to the Everett Marine Terminal. The EEA’s Office of Energy Transformation.
- Everett Marine Terminal Focus Area Working Group
Named as a coordinating partner for the Office of Energy Transformation’s winter-energy planning responsibilities. in coordination with DOER and the Everett Marine Terminal Focus Area Working Group.
Sources
current law · StatewideRequires state agencies to condition permits for new or expanded data centers exceeding 25 MW on meeting state standards for energy, water, air quality, and community benefits, while protecting ratepayers and requiring transparency.Massachusetts Statement of Expectations and Executive Order No. 658 — Responsible Data Center Development (2026)
What this means
The executive order conditions permits for covered projects above 25 megawatts on compliance with the framework, community benefits and environmental safeguards, adding costs and review requirements without prohibiting all development.
Timing
The sources state that acceptance of applications for data center sales and use tax exemptions was paused on 2026-06-25, but they do not specify an expiration date or ending condition for that pause.
People behind it
- Maura Healey
Governor of Massachusetts and issuer of Executive Order No. 658; released the responsible data center framework.
- Massachusetts Department of Environmental Protection
Responsible for permitting-related implementation, clean electricity procurement protocols, alternative compliance payments, greenhouse-gas reduction measures, and water-protection protocols for covered data centers.
- Energy Facilities Siting Board
Responsible for reviewing applicable permits and authorizations for covered data center projects and aligning requirements with the framework.
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- Massachusetts Environmental Policy Act Office
Responsible for reviewing applicable permits and authorizations for covered data center projects and aligning requirements with the framework.
- Department of Public Utilities
Responsible for developing large-load rate schedules, protecting ratepayers from data center infrastructure costs, and directing electric distribution companies to address speculative interconnection projects.
- Electric Distribution Companies
Directed by the Department of Public Utilities to eliminate speculative data center projects from interconnection queues and protect interconnection resources.
- Executive Office of Energy and Environmental Affairs
Responsible for reporting and disclosure guidance, coordinating municipal guidance, evaluating emissions and policy changes, and coordinating implementation of the framework.
- Office of Environmental Justice and Equity
Responsible for reviewing community benefits agreements and determining their conformance with applicable community-engagement standards and guidance.
- Executive Office of Economic Development
Responsible, with the Executive Office of Energy and Environmental Affairs, for publishing municipal guidance on data center development and participating in annual policy reporting.
- Executive Office of Technology, Services and Security
Responsible, with the Executive Office of Energy and Environmental Affairs and the Executive Office of Economic Development, for annual reporting to the Governor on responsible data center policy.
- All departments and agencies of the Commonwealth
Directed to cooperate in implementing Executive Order No. 658, assist municipalities evaluating proposed data centers, and encourage responsible labor practices.
Restrictions & requirementsHide restrictions & requirements14
Acceptance of applications for the Massachusetts data-center sales-and-use tax exemption was paused as of June 25, 2026, creating a temporary barrier to obtaining that exemption.
A data center with peak electricity demand exceeding 25 megawatts may not receive required permits or authorizations unless the applicant demonstrates conformance with the Framework, including its air-quality, public-health, water-use, and community-engagement expectations.
A data center project exceeding 25 megawatts must submit a community benefits agreement aligned with OEJE standards; the applicant must consult OEJE beforehand and submit OEJE’s written feedback with the agreement.
Permitting-related agencies are prohibited from using non-disclosure agreements for data-center projects, except where otherwise allowed by law.
Data centers exceeding 25 megawatts must procure sufficient incremental new clean electricity to cover their annual electric consumption and satisfy the Clean Energy Standard; by December 31, 2026, MassDEP must establish an alternative-compliance-payment mechanism for projects that fall short.
Alternative compliance payments from data centers that do not procure sufficient incremental clean electricity must be credited to a Ratepayer Protection Fund, adding a potential compliance cost.
Data centers exceeding 25 megawatts must comply with protocols protecting water quality and quantity, including demonstrating compliance with applicable water, wastewater, and stormwater requirements.
Operating data centers exceeding 25 megawatts must submit annual disclosures under guidance established by EEA, and permit applicants must attest that they will provide those annual reports.
The DPU should establish large-load rate schedules ensuring that ratepayers other than data centers do not pay for distribution-grid upgrades or related infrastructure needed to serve data-center demand, placing those costs on the projects.
The DPU should require fees, deposits, or other conditions for data-center projects exceeding 25 megawatts to eliminate speculative projects from interconnection queues and protect interconnection resources for other projects.
Under the Framework, data centers seeking the sales-and-use tax exemption are expected to bear the full costs of energy supply, infrastructure, system upgrades, and interconnection needed to serve their total energy demand rather than shifting those costs to other consumers.
Under the Framework, data centers seeking the sales-and-use tax exemption are expected to provide clean-energy generation sufficient to meet 100 percent of their demand, either on-site or through qualifying connected or deliverable resources.
Under the Framework, data centers seeking the sales-and-use tax exemption are expected to demonstrate adequate water availability and infrastructure capacity, use water-efficient cooling and reuse strategies where feasible, comply with applicable water-withdrawal requirements, and fund necessary water infrastructure or mitigation measures.
The 25-megawatt requirements apply to a data center built or expanded after the Executive Order’s effective date, including an expansion adding 25 megawatts of peak demand; the Secretaries of EEA and EOED may jointly exempt a facility directly tied to an accredited college or university for academic research, medical care, or a state-sponsored program.
Benefits & exceptionsHide benefits & exceptions7
The framework gives data centers seeking the existing Massachusetts sales-and-use tax exemption a defined set of expectations for qualifying, including clean energy, community benefits, labor, water, and transparency requirements. This does not guarantee the exemption, and Executive Order 658 separately paused acceptance of exemption applications.
For projects exceeding 25 megawatts, the permitting process provides a defined route to approval: agencies may issue permits once the applicant demonstrates compliance with the framework and submits an OEJE-reviewed community benefits agreement. The applicant must satisfy these conditions before permits can be issued.
State permitting agencies must review applicable rules for data center projects exceeding 25 megawatts and, within existing authority, amend relevant regulations to align with the framework. This can create clearer and more consistent regulatory requirements, subject to existing law.
Data centers exceeding 25 megawatts may use an alternative compliance payment instead of procuring sufficient incremental clean electricity to cover annual consumption. Payments go to a Ratepayer Protection Fund, and the mechanism is subject to MassDEP protocols and regulations.
The Executive Office of Energy and Environmental Affairs and the Executive Office of Economic Development must publish a municipal guidance document to help municipalities, residents, and other stakeholders evaluate proposed data centers and engage with developers. The guide is intended to support local project review and siting decisions.
State agencies must cooperate with and assist municipalities that are evaluating proposed data center projects, including by responding to requests for information and guidance. This provides administrative support during local project evaluation.
The 25-megawatt threshold may be waived for a data center directly tied to an accredited college or university conducting academic research, providing medical care, or carrying out a state-sponsored program. The exemption requires joint approval by the Secretaries of EEA and EOED.
Sources
current law · StatewideProvides certified data centers that meet investment, size, and job requirements a 20-year sales-tax exemption on eligible costs.400 CMR 9.00, Qualified Data Centers
What this means
The measure offers qualifying data centers a 20-year tax exemption on eligible construction, equipment, software, and electricity costs, making building and operating them cheaper. The benefit is limited to large projects that meet investment, size, and job requirements, so it is a substantial but conditional incentive.
Timing
- Ends
- The restriction on designated port area boundary adjustments ends when the Section 295(c) review is completed, no later than 2025-07-31; the pause on qualified data center certification applications lasts until further notice.
These are separate restrictions. The port-area restriction excludes the adjustment in Section 295(a), and boundary reviews may continue. EOED’s application pause lasts until further notice.
People behind it
- Executive Office of Economic Development
Proposed the qualified-data-center regulation and administers its certification process.
- Secretary of Economic Development
Reviews applications, determines qualification, and certifies or may revoke qualified-data-center status.
- Commissioner of Revenue
Consults on the certification process and administers tax-related aspects of the exemption.
Restrictions & requirementsHide restrictions & requirements9
EOED is not accepting applications for qualified-data-center certification until further notice, preventing new applicants from qualifying for the sales-and-use-tax exemption during the pause.
To qualify for the tax exemption, a facility must be owned or leased by its operator or an entity under common ownership, be newly constructed or substantially refurbished, comprise at least 100,000 square feet on a single parcel or contiguous parcels, incur at least $50 million in eligible costs within 10 years, and create or maintain at least 100 Massachusetts permanent full-time jobs within five years. These are conditions for the tax benefit, not a ban on building or operating a facility that does not qualify.
A facility seeking the exemption must house specified data-processing infrastructure and have backup power, sophisticated fire-suppression and prevention systems, and enhanced security.
An owner or operator seeking the exemption must apply to EOED for certification and provide facility, investment, employment, and expenditure information, including estimated peak electricity demand and annual consumption and information about commitments or contracts supporting additional New England power generation.
EOED may take up to 60 business days after receiving a complete application to decide whether to approve or deny it; if it does not act within that period, the application is deemed approved. The first building’s qualification period must begin no more than five years after the completed application, and EOED may require separate applications and certifications for each building in a multi-building project.
Certified centers must file reports during the qualification period on jobs, investments, exempt expenditures, and other required information. They must also report before the end of their tenth qualification year on whether they met the investment requirements.
Owners and operators must retain records substantiating exemption eligibility, and EOED may require accountant-certified cost accounting of exempt expenditures.
EOED may revoke certification for material noncompliance, failure to meet material obligations, or materially inconsistent reporting. Revocation can disallow tax benefits and make exempt purchases taxable, with applicable penalties and interest.
After a sale or transfer before the qualification period ends, a new owner or operator may continue receiving the exemption only if EOED approves assignment of the certification; EOED may impose additional conditions.
Benefits & exceptionsHide benefits & exceptions12
Certified qualified data centers may claim a sales and use tax exemption for eligible equipment, software, operating electricity, and construction, renovation, or refurbishment costs incurred after November 20, 2024. Eligibility includes requirements such as at least 100,000 square feet, $50 million in qualifying costs within 10 years, and 100 jobs; the regulation specifies 100 permanent full-time employees within five years of commercial operations. Certification may take effect on the application date or a prospective date up to five years later.
The tax exemption can last for 20 years. Each later building at the same site can have its own 20-year period starting when it begins commercial operations, supporting phased development; EOED may require separate applications and certifications for buildings.
If a certified data center is sold or transferred before its qualification period ends, the tax benefits may continue for the remaining period for the new owner or operator, subject to EOED approval and any conditions it imposes.
Certification applications have a decision deadline, though the sources differ: the statute says 60 days, while the regulation says 60 business days. If the deadline passes without approval or denial, the application is deemed approved. A denial must provide written reasons and an opportunity to cure deficiencies; the regulation specifies 30 calendar days.
The Permit Regulatory Office must work with state agencies to expedite permits, licenses, approvals, and other legal requirements for new and expanding businesses, and provide technical assistance to municipalities seeking to streamline local permitting.
Projects in designated Priority Development Sites may receive priority consideration for state grants, business-development resources, brownfields assistance, and regional planning technical assistance. The site must meet statutory criteria, including capacity for at least 50,000 square feet of development; priority financial assistance also requires the municipality to meet applicable multifamily-zoning requirements.
A $25 million capital-grant program may support private businesses constructing or expanding commercial, industrial, or manufacturing facilities, including projects involving decarbonization, climate resilience, or significant job creation.
The $400 million MassWorks infrastructure program may provide grants or other assistance for eligible projects in municipalities that comply, or have interim compliance, with the multifamily-zoning requirement.
A $3 million program may fund site assembly, assessment, predevelopment permitting, and marketing to prepare sites for commercial or industrial development. Awards are limited to projects in municipalities that comply, or have interim compliance, with the multifamily-zoning requirement.
Certain development approvals in effect at any time from January 1, 2023, through January 1, 2025, are extended by two years, subject to listed exclusions and conditions.
Zoning rules in effect when a building permit is issued continue to govern construction or operations if work or use starts within 12 months and construction proceeds reasonably. Special permits and site-plan approvals have three years to start, and phased redevelopment need not proceed continuously between phases.
At Devens, the measure removes square-foot caps on commercial or industrial development, while leaving other applicable development-permit and housing-bylaw requirements in place.
Sources
current law · StatewideProvides qualifying, state-certified data centers that meet size, investment, and job requirements a 20-year exemption from sales and use tax on eligible construction, equipment, software, and electricity.Acts of 2024, c. 238; M.G.L. c. 23A, § 70 and c. 64H, § 6(zz)
What this means
The measure would lower costs for qualifying data centers for 20 years by exempting construction, equipment, software, and electricity from sales and use taxes. The benefit is limited to large projects that meet investment, size, and job requirements, and applications are not being accepted until further notice, so its practical impact is moderate.
Timing
- Ends
- Upon completion of the review required by Section 295(c), which must be completed by 2025-07-31; certification applications for the Qualified Data Center Tax Exemption are suspended until further notice
The boundary-adjustment moratorium ends when the required review is completed, no later than 2025-07-31. It does not apply to the specifically authorized professional soccer stadium and waterfront park adjustment. Separately, EOED’s suspension of qualified data center certification applications remains in effect until further notice, with no specific expiration date or extension condition stated.
People behind it
- Governor
Returned certain sections with recommendations for amendment and approved the act in part.
- Senate and House of Representatives
Enacted the measure in General Court assembled.
- Executive Office of Economic Development
Administers certification processes and related tax exemptions and credits, including the Qualified Data Center Sales and Use Tax Exemption and Qualified Internship Credit; investigates potential material noncompliance.
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- Massachusetts Clean Energy Technology Center (MassCETC)
Administers the Climatetech Tax Incentive Program and authorizes related climatetech and offshore wind tax credits.
- Massachusetts Office of Business Development (MOBD)
Administers the Live Theater Credit through a competitive grant and certification program.
- Economic Assistance Coordinating Council (EACC)
Administers the Economic Development Incentive Program and authorizes EDIP credits.
- Massachusetts Life Sciences Center
Administers the Massachusetts Life Sciences Tax Incentive Program and previously administered the Angel Investor Credit.
- Executive Office of Housing and Livable Communities (EOHLC)
Administers the Housing Development Incentive Program Credit.
- Secretary of Energy and Environmental Affairs
Has discretion to authorize the Cranberry Bog Renovation Credit.
- Secretary of the Executive Office of Economic Development
Determines qualifications, reviews and certifies applications, oversees and may revoke certifications, and promulgates related regulations.
- Commissioner of Revenue
Consults on qualification standards and investigations, participates in certification reviews and revocation investigations, and administers related tax benefits.
- Department of Revenue
Consults on investigations of material noncompliance and administers affected tax exemptions, credits, and other benefits.
Restrictions & requirementsHide restrictions & requirements12
A data center must be constructed or substantially refurbished in Massachusetts and contain at least 100,000 square feet in one or more buildings on a single parcel or contiguous parcels.
A qualifying data center must incur at least $50 million in qualified construction, refurbishment, renovation, or improvement costs within 10 years after certification; substantial refurbishment must itself involve at least 100,000 square feet and $50 million in eligible costs.
A qualifying data center must maintain at least 100 Massachusetts jobs, with the jobs requirement generally applying within five years after certification.
A qualifying data center must use specified infrastructure and safety and security measures, including uninterruptible power supplies or generator backup power, sophisticated fire-suppression and prevention systems, and enhanced access controls or comparable security.
The owner or operator must submit a detailed application and obtain certification from the secretary of economic development or the Executive Office of Economic Development before claiming the sales and use tax exemption.
Certification is discretionary and may be denied for deficiencies; the secretary may take up to 60 days to approve or deny a completed application, although the application is deemed approved if no decision is issued within that period.
The certification must specify the exemption's effective and ending dates and, for facilities with multiple buildings, the expected commercial-operation dates and qualification periods for later buildings. The effective date may be prospective but cannot be more than five years after the application date.
A certified data center must submit an annual report covering jobs, investments, exempt expenditures, and other information required to establish continued eligibility.
The secretary and commissioner must review the certification after 10 years, and the facility must submit a report before the end of its tenth qualification year addressing whether it satisfied its investment commitments.
Certification may be revoked for material noncompliance, including failure to meet the investment or minimum-job requirements, causing the related tax exemptions and benefits to end or be disallowed beginning with the tax year of noncompliance or revocation.
The sales and use tax exemption is limited to specified categories, including eligible data-center equipment, software, electricity used to operate the facility, and construction, renovation, or refurbishment costs.
EOED is currently not accepting qualified data center certification applications until further notice.
Benefits & exceptionsHide benefits & exceptions11
Certified qualified data centers may claim a sales and use tax exemption for eligible equipment used to build, improve, or operate the facility, including computing, networking, storage, cooling, HVAC, power and backup-power systems, security, monitoring, water-conservation, modular, and related operating equipment. Eligible data center equipment
The exemption covers computer software purchased, leased, used, or loaded at a qualified data center, including maintenance, licensing, and customization. Computer software
Electricity used or consumed to operate a qualified data center is exempt from sales and use tax. Electricity for operation
Construction, renovation, refurbishment, and improvement costs for a qualified data center are exempt from sales and use tax, including land development, materials, labor, services, buildings, utilities, site and utility infrastructure, engineering, heavy and transportation equipment, cooling, power, security, and water-conservation systems. Construction costs
The tax exemption lasts for a 20-year qualification period, beginning on the application or another prospective date specified in the application that is no more than five years later. The exemption applies to purchases made on or after November 20, 2024, and requires EOED certification.
Eligibility for the data-center tax exemption generally requires a Massachusetts facility that is constructed or substantially refurbished for specified information-technology uses, has at least 100,000 square feet, incurs at least $50 million in qualified costs within 10 years, and creates or maintains at least 100 Massachusetts jobs within five years, along with applicable operational, safety, security, and other requirements.
For a qualified data center with multiple buildings, later buildings may receive their own 20-year exemption periods beginning when they start commercial operations, supporting phased expansion.
If a qualified data center is sold before its qualification period ends, the tax exemption continues for the subsequent owner for the remaining portion of the 20-year period, provided the applicable requirements continue to be met. Exemption for subsequent owner
EOED must approve or deny a completed certification application within 60 days, provide written reasons and an opportunity to cure deficiencies if denying it, and treat the application as approved if it does not act within that period. Certification may be effective on the application date or on a specified prospective date up to five years later.
Development approvals in effect or existing during January 1, 2023 through January 1, 2025 receive a two-year extension, subject to stated conditions such as available sewer capacity. The extension excludes specified federal, fisheries, energy, transportation-authority, and enforcement-related approvals. Two-year extension
Certain development projects are protected from later zoning changes: building-permit projects generally have 12 months to begin construction and proceed continuously and reasonably, while projects requiring a special permit or site-plan approval generally have three years to begin. For phased redevelopment of previously disturbed land, substantial investment in site preparation or infrastructure construction can count as commencement. Commencement through substantial investment
Sources
pending · StatewideWould prohibit electric utilities from passing electricity costs attributable to data centers with capacity of at least 10 megawatts on to residential or income-eligible customers.Massachusetts HD5404 (2025-2026)
What this means
The bill would not block data center projects, and it would protect residential customers from electricity cuts tied to data centers. But it would add utility rate reviews and recordkeeping, and could make data centers bear more of their electricity-related costs, creating a minor added burden (review rates and terms; maintain records).
People behind it
- Rodney M. Elliott
Presenter and primary petitioner who proposed and introduced the bill
- Tara T. Hong
Additional petitioner and co-sponsor of the bill
Sources
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