| Decision point | Pass-through structure | All-in structure |
|---|---|---|
| Headline rate | Usually covers a narrower stated scope | Bundles only the defined scope |
| Variation | Named components can change | Exceptions and usage can still change |
| Evidence | Formula and underlying determinants | Written inclusions and exceptions |
| Useful comparison | Full component projection | Same projection with included scope checked |
Create a component matrix before comparing totals
List commodity energy, capacity, transmission or network, ancillary services, losses, supplier fees, renewable attributes, utility delivery and taxes. Mark each as fixed, included, indexed or passed through under each proposal. Some items may not apply to the account, but leaving their status unresolved is different from confirming a zero cost.
For every pass-through, obtain the calculation basis and invoice evidence. Determine whether the supplier adds a margin, applies an allocation method or can change the calculation. For an all-in offer, read exceptions for regulatory changes, usage or other events. The contract’s actual schedule controls the scope, not the sales description.
Understand the tradeoff in responsibility
A broader fixed scope can support planning while including the supplier’s allowance for the risks it accepts. A pass-through structure can expose costs more directly, but requires the buyer to budget for variation and verify charges. Neither transparency nor certainty should be assumed without seeing the actual calculation and exclusions.
Operational changes can affect passed-through quantities even when the headline commodity rate is unchanged. A higher demand determinant or changed load profile may alter some costs. The business needs a person or process to review those determinants, especially when invoices show unfamiliar components rather than a single comprehensible supply rate.
Hypothetical total-cost reconciliation
Assume 100,000 kWh. An invented all-in supplier scope at $0.10 gives $10,000. A pass-through case at $0.08 commodity gives $8,000, but adding $1,500 of other supply components and a $700 period fee produces $10,200. The headline two-cent difference does not establish savings.
If the passed-through components instead total $1,000 with the same fee, that case becomes $9,700. These figures are scenarios, not rates or predictions. Delivery and taxes must be treated identically outside or inside the chosen scope. Do not compare a supplier all-in figure with a complete utility bill unless their included components truly match.
Require a reproducible bill example
Request a sample invoice or settlement against the same load and period for both proposals. Retain the supporting calculations and list assumptions that cannot be fixed in advance. Where a component will reset during the term, show several cases rather than quietly extending today’s value into every future month.
Choose based on comparable projected cost, approved budget exposure and the ability to audit the calculation. If a pass-through cannot be explained or an all-in exclusion is vague, resolve it before acceptance. This page does not assume one structure is cheaper; it helps prevent the bill shock that comes from comparing prices that describe different things.
Questions & answers
Does all-in include taxes and utility delivery?
Only if the agreement explicitly includes them. The label alone is insufficient to define the bill boundary.
Sources & scope
Primary references reviewed October 15, 2026. These sources support the stated concepts; actual tariffs, program rules and signed agreements govern the account. Decision examples and operational worksheets are original educational analysis.
- DOE FEMP: Evaluating Your Utility Rate Options
Energy, demand and fixed charges and why the complete tariff matters. - New Jersey BPU: Commercial energy shopping
Commercial fixed, floating and hybrid purchasing options and supply versus utility delivery.