Drafting an Energy Performance Contract: Key Clauses and Pitfalls

Drafting an Energy Performance Contract: Key Clauses and Pitfalls

An energy performance contract (EPC) is an agreement in which one party, usually an energy service company (ESCO), commits to delivering measurable energy savings to a facility owner or operator, and gets paid out of those savings. Unlike a standard service agreement, payment is tied to verified results rather than hours or deliverables. This page covers the clauses that matter, the pitfalls that cause disputes, and how commercial and public sector teams can protect their organization when drafting one.

Energy performance contract at a glance

What makes energy performance contracts different

These agreements shift risk in ways that a standard vendor agreement does not. The ESCO usually finances upfront capital improvements, such as new HVAC systems, LED lighting, or building automation controls, then recovers those costs from a share of the savings over time. Because compensation depends on outcomes, the drafting has to spell out exactly how savings are measured, verified, and allocated.

The agreement must define baseline energy use, the calculation method, and the length of the performance period. Without those fundamentals, disputes over whether the promised savings materialized become almost inevitable. The stakes are high: these contracts often run 10 to 20 years and involve substantial capital.

EPCs are common in the public sector. State and local government bodies, schools, and public facilities use them to fund efficiency upgrades without a large capital outlay, since the works are paid for out of the savings they generate. The federal government runs a formal Energy Savings Performance Contract (ESPC) program through the U.S. Department of Energy (energy.gov), and many states run their own programs with model contracts. Whether you are a private commercial team or a public body, the drafting principles below apply.

Essential clauses for your energy performance contract

Performance guarantees and measurement

The core of the agreement is the performance guarantee. It should state the exact savings or efficiency targets the ESCO commits to, in measurable units such as kilowatt-hours, therms, or percentage reductions from baseline. Avoid vague wording like "substantial savings" or "improved efficiency" and require specific numerical targets with clear measurement protocols.

The measurement and verification (M&V) clause deserves equal attention. It sets out how savings are calculated, what data is collected, who collects it, and how often. Many contracts reference the International Performance Measurement and Verification Protocol (IPMVP), but you should still name the specific option in use and any changes to the standard protocol.

Baseline adjustments and operating conditions

Energy use varies with factors outside the ESCO's control: weather, occupancy, production schedules, and equipment added or removed. Your agreement needs adjustment provisions for these variables. A good baseline adjustment clause protects both sides. It stops the ESCO being penalized for higher use driven by expanded operations, and stops you being credited with false savings from reduced building use.

Specify which factors trigger a baseline adjustment, the method for making it, and the approval process. Common triggers include changes in floor area, operating hours, production volume, or weather-normalized degree days.

Payment structure and savings allocation

The payment clause has to spell out how the ESCO is compensated. Common structures include:

• Shared savings. Both parties split the savings by a predetermined percentage.
• Guaranteed savings. The ESCO guarantees a minimum, and you keep everything above that threshold.
• Combination. A blend of the two, often used on larger public sector projects.

Detail the payment schedule, including any upfront fees, periodic payments tied to verified savings, and reconciliation steps. Address what happens if savings fall short: does the ESCO pay the difference, and is there a cap on their liability? These provisions decide who ultimately carries the performance risk.

Scope of work and equipment ownership

Define what equipment and services the ESCO provides. Include specifications for all installed equipment, installation timelines, commissioning, and acceptance testing. Ambiguity here leads to arguments over whether the ESCO has met its obligations. The scope should also record the design and technology choices behind each measure, from control systems to metering hardware, so both parties agree on what is being installed and how it performs.

Address ownership explicitly. In many EPCs the ESCO retains title to installed equipment until the term ends or certain payment milestones are reached. Specify when title transfers, what happens to equipment on early termination, and who is responsible for upkeep, repairs, and insurance during the term.

Maintenance and operations obligations

Savings depend on equipment being run and maintained properly. The agreement should set out each party's responsibilities. Typically the ESCO maintains the installed equipment to keep it performing as guaranteed, while the facility owner keeps up existing building systems. Define standards, response times for repairs, and consequences for failures. If the owner's poor upkeep of existing systems undermines the guaranteed savings, the contract should say how that affects the guarantee.

Common pitfalls to avoid

• Inadequate baseline documentation. Many disputes stem from poorly documented baseline conditions. Complete comprehensive energy audits before signing and require the ESCO to provide detailed baseline reports you can independently verify. Accepting vague or incomplete data sets you up for disagreements about whether targets were actually met.
• Overlooking operational changes. Facilities rarely run identically for 15 or 20 years. Production lines change, buildings expand, schedules shift. Build in flexibility through well-defined adjustment mechanisms, and require notice and documentation when operational changes occur.
• Weak termination and default provisions. Address termination for convenience, for cause, and for force majeure. Specify the financial consequences of early exit, how equipment ownership is handled, and whether breakup fees apply. Define what counts as a material breach, notice requirements, cure periods, and remedies for both sides.
• Insufficient insurance and indemnification. Installation and ongoing operations create liability. Require the ESCO to carry general liability, professional liability, and builders risk insurance during installation, name you as an additional insured, and set minimum coverage amounts. Keep indemnities mutual and appropriately scoped.
• Ignoring incentives and regulatory change. Efficiency projects often qualify for utility rebates, tax credits, or other public funding. Specify who receives them and what happens if they are denied or reduced. Include a mechanism for handling new regulations that change equipment requirements or how savings are calculated.

On the termination point, when the exit involves complex financial arrangements or equipment ownership transfers, it helps to reference established frameworks. If subcontractors handle installation or maintenance, a Main Contractor And Subcontractor Agreement can clarify responsibilities when the primary contract ends.

Keeping the drafting current

Energy regulation, incentive programs, and efficiency technology all move quickly, so a contract you sign in 2026 should not read like one drafted a decade ago. Before you commit, identify the current utility rebates, tax credits, and reporting requirements that apply to your project, and confirm the measurement standards your ESCO cites are the ones still in force. Ask for the ESCO's data sources and check whether their savings projections rely on outdated equipment performance figures. Good contract management means revisiting these assumptions across the term, not just at signing, because a 15-year agreement will outlast several rounds of regulatory and technology change.

Protecting your interests through careful drafting

Energy performance contracts offer real benefits, but their structure demands attention to detail. Focus on precise performance metrics, clear measurement protocols, and sensible allocation of risk through indemnification, insurance, and termination provisions. Before you finalize anything, make sure you understand exactly what savings are guaranteed, how they will be measured, what happens if targets are missed, and what your obligations are across the term.

The long-term nature of these agreements makes getting the drafting right at the start essential. An EPC locks you into a relationship spanning many years, so exit is difficult and expensive. For a public sector body answerable to policy and audit requirements, or a commercial team without in-house counsel, that makes clear terms worth the time up front. GenieAI drafts and reviews contracts like these against your own playbook, flagging weak baselines, uncapped liabilities, and one-sided termination terms before you sign.

How do you measure and verify energy savings in a performance contract?

Measuring and verifying savings requires a clear baseline plus ongoing monitoring. The agreement should establish a baseline consumption level before works begin, using historical utility data adjusted for variables like weather, occupancy, and operational change. It must specify the M&V method, often following IPMVP standards, and define who conducts M&V, how often data is collected, and what equipment is used. Include independent audit rights if a dispute arises. Payment should tie directly to verified savings, protecting your organization from paying for results it never received. Clear M&V wording removes ambiguity and keeps both parties aligned on how performance is assessed across the term.

What happens if guaranteed energy savings are not achieved in your contract?

If the guaranteed savings fall short, the agreement should define the remedies. Typically the ESCO compensates you for the shortfall through direct payment or credit. Some contracts secure this with a performance bond or bank guarantee. Well-drafted agreements specify the measurement period, the calculation method, and dispute resolution steps, and give you termination rights if underperformance persists beyond a defined threshold. Without clear remediation wording, you risk carrying the cost of unmet projections. Build in verification protocols, third-party audit rights, and enforceable consequences so vendor incentives stay aligned with your operational goals and you have recourse when a guarantee is missed.

How do you structure payment terms based on energy performance guarantees?

Payment should tie compensation directly to verified savings. A tiered structure works well: a base payment for installation and commissioning, then performance-based payments calculated as a percentage of the actual energy cost reduction against an agreed baseline. Set out M&V protocols, including who audits and how often. Withholding part of the payment until targets are consistently met over a defined period protects your organization. Address remedies for underperformance, such as payment reductions or corrective work at the provider's expense. If a large upfront investment is involved, an Open Bank Guarantee can reduce your financial risk. Align payment milestones with verification cycles, usually quarterly or annually, and define how contested performance data is resolved.