Commercial energy contract types and their tradeoffs

Fixed and variable supply products

A fixed product holds specified price components constant for a defined period. It can support budgeting, but consumption, utility delivery charges, taxes, and expressly excluded costs may still change. Variable products can reset under the supplier’s stated method, which is not necessarily a transparent wholesale index. Ask how often the price changes, how notice works, and whether any introductory price expires. A fixed rate and a fixed monthly payment are also different arrangements with different reconciliation risks.

Indexed and block-and-index structures

Indexed pricing links a component to a defined market reference plus agreed adjustments. Location, hourly weighting, losses, and supplier fees matter. A block-and-index product fixes a specified quantity or shape while settling residual quantities under an index. Underuse can create resale or settlement exposure rather than a simple credit at the fixed purchase price. These products need reliable usage data and someone able to understand settlement statements, particularly when production schedules change.

Volume and operational terms define suitability

Full-requirements language, swing tolerances, minimum usage, and site-change provisions can be more important than the pricing label. A company planning solar, electrification, or a relocation should describe those plans before obtaining offers. Gas contracts also require attention to commodity units, basis, balancing, and transportation. Electricity agreements may allocate capacity, transmission, and ancillary costs differently. Use a written inclusions table and ask suppliers to identify every clause that can adjust the stated price.

Hypothetical product selection

A steady 24-hour facility can model a fixed block against fairly predictable baseload, while a seasonal venue may find the same block creates excess purchases during quiet months. The venue should compare a full-requirements offer or a smaller block using its own intervals, not the factory’s profile. Model normal use, a closure month, and a high-price period. The exercise reveals risk allocation; it does not establish which product will be cheapest under an unknown future market.

Practical review checklist

• Define the business objective and identify staff who will monitor any retained market exposure.
• Compare every offer on the same accounts, start date, term, usage, and included components.
• Model underuse, expansion, closure, and high-index scenarios before choosing a complex structure.
• Review renewal, termination, credit, assignment, and change-in-law clauses alongside the product price.

Questions & answers