Commercial energy contract terms: a practical glossary

Price, index, adder, and pass-through

The price unit may be dollars per kWh, MWh, therm, or MMBtu. An index is a named market reference; an adder is a separate agreed adjustment rather than the whole cost. A pass-through allocates an identified expense to the customer, potentially with a reconciliation method. Capacity, transmission, losses, and ancillary services require their own treatment. Ask whether the quoted rate includes each category and how any true-up is calculated. Do not compare prices expressed in unlike units.

Term, effective date, notice, and renewal

The execution date records when parties sign; the supply effective date records when service begins. The term defines the covered period, often subject to enrollment rules. A notice window states when and how an action must be delivered. Automatic renewal or holdover language governs service after expiration. A useful contract abstract lists these dates separately with required notice recipients. Calendar a decision before the earliest applicable deadline rather than simply adding a reminder on the final service day.

Requirements, tolerance, and operational flexibility

Full requirements generally relates to serving actual needs within defined terms; it is not a universal exemption from volume conditions. A tolerance or bandwidth sets allowed variation around a baseline. Minimum-take or similar clauses can create obligations despite lower consumption. Assignment addresses transferring rights or duties, while site-addition and closure clauses govern portfolio changes. Change-in-law and material-change provisions can affect the price or obligations. Record the clause reference rather than relying on a one-word summary.

Practical example: turn words into an abstract

For a hypothetical 24-month offer, create a one-page table containing the supply period, price and unit, included components, volume baseline, change provisions, notice process, and exit methodology. Then test a planned site closure and a 20% use reduction against those entries. If the table cannot explain the outcome, obtain clarification before signing. This exercise is a purchasing aid, not a substitute for legal review of a material or ambiguous obligation.

Practical review checklist

• Pair every glossary label with the exact contract clause and its business consequence.
• Normalize energy units and record formulas rather than copying only a headline price.
• Keep signing authority, data authorization, effective date, and renewal authority separate.
• Escalate undefined adjustments, conflicting documents, and uncapped obligations for qualified review.

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