Risk Allocation, Safety, and Environmental Liability in Massachusetts BESS Leases

Battery Energy Storage System (“BESS”) projects present a distinct set of safety, environmental, and operational risks that are materially different from those found in traditional commercial ground leases. In Massachusetts, these risks are further shaped by evolving fire codes, heightened local review, and state environmental regulation.

This article focuses on how Massachusetts landowners should evaluate and allocate safety and environmental risk when negotiating a BESS lease, particularly once a project moves beyond zoning and into construction and operation.

Why Safety and Environmental Risk Is Central in BESS Leases

Unlike solar or conventional utility uses, BESS facilities—particularly lithium-ion systems—carry inherent risks related to:

• Thermal runaway and fire events
• Hazardous material storage and release
• Emergency response coordination with local fire departments

From a landowner perspective, these risks are not theoretical. They affect insurance, financing, municipal relations, and long-term property value. As a result, Massachusetts BESS leases typically devote significant attention to risk allocation and mitigation.

Fire-Life Safety and Massachusetts Code Compliance

Massachusetts Fire Code and Local Authority Review

BESS projects in Massachusetts are subject to:

• The Massachusetts Fire Code (527 CMR 1.00), including provisions incorporating NFPA standards applicable to energy storage systems; and
• Review and ongoing oversight by the Authority Having Jurisdiction (AHJ), typically the local fire department.

Landowners should expect that:

• Fire officials will be actively involved in project review;
• Conditions may evolve during permitting or operation; and
• Compliance obligations may change over the life of the lease.

Lease Allocation of Code Compliance Risk

A landowner-favorable lease should clearly provide that:

• The tenant is solely responsible for compliance with all fire, building, and safety codes;
• Any required system upgrades are at tenant’s cost; and
• Noncompliance constitutes a lease default.

Avoid provisions that require the landowner to fund or participate in safety upgrades triggered by regulatory changes.

Hazardous Materials and Environmental Regulation

Batteries as Regulated Materials

While BESS facilities are not inherently “hazardous waste sites,” they often involve:

• Storage of lithium-ion or other regulated battery technologies;
• On-site transformers, cooling systems, and related equipment; and
• Potential releases during fire, failure, or decommissioning.

Massachusetts landowners should ensure that the lease expressly treats batteries and related materials as hazardous materials for purposes of environmental provisions, even if not classified as such under existing law.

MassDEP and Local Environmental Oversight

Depending on location and scale, BESS projects may trigger:

• Massachusetts Department of Environmental Protection (MassDEP) requirements;
• Wetlands Protection Act jurisdiction if located near resource areas; and
• Local Conservation Commission review.

The lease should place full responsibility for environmental compliance, remediation, and reporting on the tenant.

Environmental Indemnities: Scope and Survival

Broad Indemnity Is Market Standard

In Massachusetts BESS leases, environmental indemnities typically:

• Cover all releases, spills, or contamination associated with the project;
• Apply regardless of fault or negligence; and
• Survive lease expiration or termination.

Landowners should resist efforts to narrow indemnities to violations of law or negligence standards, which may leave gaps in coverage.

No Reliance on Insurance Alone

While insurance is critical, it should supplement—not replace—indemnity protections. Environmental indemnities should be drafted to operate independently of insurance coverage limits or exclusions.

Insurance Requirements and Massachusetts Market Practice

Required Coverages

BESS leases in Massachusetts typically require:

• Commercial general liability insurance with elevated limits;
• Environmental or pollution legal liability coverage;
• Property insurance covering BESS equipment; and
• Builder’s risk coverage during construction.

Landowners should be named as additional insureds on all relevant policies, with waivers of subrogation where appropriate.

Evolving Insurance Market Considerations

Given the evolving risk profile of BESS projects:

• Insurance availability and pricing may change over time;
• Policies may include exclusions specific to battery technology; and
• Renewal obligations should be clearly allocated to the tenant.

The lease should require replacement coverage if existing policies become unavailable.

Emergency Response Planning and Ongoing Operations

Coordination With Local Fire Departments

Massachusetts municipalities increasingly require:

• Emergency response plans specific to BESS facilities;
• On-site signage and access controls; and
• Periodic drills or coordination with first responders.

Landowners should ensure that:

• These obligations are fully borne by the tenant; and
• Failure to maintain required plans constitutes a lease default.

Operational Controls and Monitoring

Leases often address:

• 24/7 system monitoring;
• Remote shutdown capabilities; and
• Ongoing maintenance standards.

From a landowner perspective, operational transparency can help mitigate reputational and safety risk without imposing day-to-day management responsibility.

Casualty, Condemnation, and Catastrophic Failure

BESS-Specific Casualty Considerations

Standard casualty provisions may be insufficient for BESS projects. Landowners should consider:

• Extended downtime following a fire or system failure;
• Regulatory shutdowns pending investigation; and
• Residual environmental impacts.

The lease should clearly address:

• Whether and when restoration is required;
• Termination rights following major incidents; and
• Allocation of insurance proceeds.

Practical Takeaways for Massachusetts Landowners

When negotiating BESS leases in Massachusetts, landowners should:

• Treat safety and environmental provisions as core economic terms;
• Allocate all compliance, remediation, and upgrade obligations to the tenant;
• Require robust indemnities that survive termination;
• Ensure insurance requirements reflect evolving BESS risk; and
• Avoid becoming operationally entangled in safety management.

Conclusion

Safety and environmental risk allocation is a defining feature of Massachusetts BESS leases. Given heightened local scrutiny and evolving regulatory standards, landowners should approach these provisions with the same rigor applied to zoning and economic terms. Thoughtful drafting can meaningfully reduce exposure while preserving long-term land value.