Build a load file with the right context
Collect interval usage through an appropriate private process and note production shifts, planned outages and expansion. Identify every service location and rate class. A single annual total can conceal short peaks, seasonal shutdowns and substantial changes in load shape. Ask whether the supplier’s model reflects the latest operating plan rather than a historical pattern the plant will no longer follow.
Separate tariff demand from supply exposure
Document monthly billed demand, applicable minimums and any power-factor or other tariff requirements. Separately ask how the supply agreement treats capacity, transmission and losses. A large facility can have opportunities in both areas, but a change in one does not prove a reduction in the other. Use engineering review before changing equipment operation or control settings.
Stress-test volume flexibility
Review what the agreement allows if output rises, a line is idled or a facility is sold. Determine how usage outside an agreed band is priced. A low fixed rate can become less useful if it is tied to an unsuitable load commitment. Compare the cost of flexibility with the actual range of production outcomes the business can reasonably face.
Choose governance before a complex product
Block-and-index or other structured products require clear monitoring, approval and reporting responsibilities. Establish who can act, what information they receive and how budget exposure is limited. An indexed structure is not an automatic saving. If the team cannot manage the product’s decisions, a more inclusive agreement may fit better despite a different initial price.
A practical example
Illustrative explanation, not a customer outcome.
Two sites can each use 100,000 kWh in a month while one has a short, high peak and the other runs steadily. Their demand and supply economics can differ. Use interval records and the actual tariff before attributing that difference to supplier margin.
Put the review into practice
| Review step | What to record |
|---|---|
| Define the objective | Separate procurement, consumption, resilience and capital needs. |
| Collect the baseline | Document quantities, operations and the relevant agreements. |
| Test practical cases | Include costs, constraints and a less favorable outcome. |
| Assign responsibility | Record who approves, monitors and maintains the plan. |
Questions worth asking
Does buying more energy guarantee a lower all-in rate?
No. Load shape, service class and other costs also matter.
Should I send interval data with the initial inquiry?
No. Describe the request first; arrange appropriate private document sharing after contact.
Continue the comparison
Sources and scope
Reviewed October 15, 2026. Follow the source’s own data period, effective dates and current terms. Examples are hypothetical unless expressly identified as a dated published result. A source is context, not a guarantee of eligibility or a product endorsement.