Key takeaway
A matching total can still depend on estimated intervals. Reconcile what was metered separately from what was filled, and keep energy distinct from demand.
Set one meter, one period and one quantity basis
A building’s energy archive may mix utility invoices, meter readings and software totals. Those surfaces can differ in period, coverage and units. Define the proposed comparison before summing: which utility account, which physical meter or documented meter group, which start and end boundaries, and which energy quantity? A whole-site bill cannot be reconciled against one tenant’s submeter without explaining the different coverage.
DOE’s Federal Energy Management Program describes energy-management capabilities that compare totalized advanced-meter data with utility bills and validate billing records. That is a capability description, read 8 October 2026, rather than evidence that a particular archive has been reconciled. Your own review must establish matching identity and boundaries, distinguish original observations from substitutions and retain unresolved differences rather than labeling every loaded interval as measured consumption.
Show when a match depends on a filled gap
This hypothetical September file refers to meter M3 and utility account A9 for one documented 30-day billing period. The invoice lists 23,400 kWh. Retained observed intervals cover 28 of those days and total 22,700 kWh. Two missing days receive a separately tagged illustrative fill of 700 kWh. The resulting software total is 23,400 kWh, equal to the invoice’s listed energy quantity.
The completed reconciliation records two different answers. The observed intervals alone are 700 kWh below the bill; the filled series matches it. That does not verify the fill or explain why the intervals were missing. The facilities owner retains the 28-day observed coverage and the two-day substitution flag. The example makes no claim about actual site consumption, meter accuracy, utility billing correctness or whether the hypothetical filling method is suitable.
Keep a reconciliation version tied to this invoice and interval series. If a replacement invoice later lists 23,300 kWh, the same 23,400 kWh loaded series is now 100 kWh above that revised quantity. Preserve both comparisons and the invoice-replacement relationship. This hypothetical revision illustrates why agreement with an earlier bill cannot be carried forward as an undated verified flag; it does not establish which billing version is correct.
| Comparison field | Completed illustrative value | Interpretation |
|---|---|---|
| Meter / account / period | M3 / A9 / same documented 30 days | Identity and boundaries matched for this exercise |
| Invoice energy | 23,400 kWh | Billed quantity; its reading basis requires review |
| Observed interval total | 22,700 kWh across 28 days | 700 kWh below billed quantity |
| Filled interval quantity | 700 kWh across 2 missing days; tagged estimate | Substitution, not metered evidence |
| Loaded-series total | 22,700 + 700 = 23,400 kWh | Matches only after including the fill |
Keep energy and demand in different comparisons
A bill can contain energy, demand and fixed charges. DOE distinguishes energy charges based on kWh from demand charges based on maximum kW, with other rate components as applicable. Summing energy intervals does not reproduce a demand charge. Locate the rate basis and the relevant demand interval rather than comparing a kWh total with a peak-demand value or treating the overall invoice amount as an energy measurement.
For the example, the review concerns only the invoice’s 23,400 kWh energy quantity. If a separate demand line exists, create a separate reconciliation with its own quantity definition. Do not divide the total invoice by kWh and present the result as a universal rate. Other charges, billing adjustments or tariffs can change that ratio. A documentary match also remains separate from an assessment of the meter or its measurement uncertainty.
Retain estimates, revisions and bill versions
DOE describes tagging backfilled meter data. Adopt that distinction in your proposed archive description: metered observation, substituted interval, later replacement and unresolved gap should not collapse into one unlabeled value. Retain how each substitution was produced and which version a reconciliation used. If actual intervals later arrive, compare the revised series with the earlier one and preserve the reason for changing the result.
Pin the invoice version as well. A revised or corrected bill should not be added to the original as if both represented new consumption. Link replacement documents and record which one the comparison uses. When quantities still disagree, list plausible evidence questions such as meter coverage, interval completeness, unit conversion or invoice adjustment. The difference itself does not diagnose a faulty meter, an overcharge or an efficiency opportunity.
Publish an evidence description, not savings or data-value claims
For an initial inventory, identify the period of retained bills, interval coverage, documented meter relationships, units and substitution flags. Describe reconciliation records only if they actually exist. Site and account identifiers, operating schedules, billing agreements and building occupancy patterns may require restriction before disclosure. A fictional meter ledger is sufficient to explain the proposed structure while those decisions are pending; real interval data need a separately approved scope.
The next internal task assigns the facilities owner to meter identity, the billing owner to invoice versions and the system owner to interval provenance. Use readiness to record incomplete coverage and inventory to summarize the retained evidence. A potential evaluator may need energy profiles or reconciliation exceptions; ask that specific question before preparing material. Neither a matching bill nor public analytics capabilities establishes buyer demand, license proceeds or predicted energy savings.