Which assurance question goes beyond collecting electricity records?
A complete electricity ledger is the start of reporting, not the end of market-based review. The assurance question is whether the selected instruments, factors, boundaries, and disclosures satisfy the method actually governing the inventory.
Identify the reporting entity and recipient. A hotel owner, operator, and brand can have different organizational boundaries and reporting responsibilities. Write down which organization is approving the result before assigning another party’s renewable purchase to the property.
The markets hub connects this assurance step with other energy decisions. The file should demonstrate how the market-based result was constructed and why its inputs qualify, rather than simply attach a green procurement invoice.
What does the published Scope 2 method require the reviewer to examine?
The GHG Protocol Scope 2 Guidance distinguishes location-based and market-based electricity accounting and addresses contractual instruments and their quality requirements. Apply the published method and the reporting program’s instructions to the actual inventory.
Keep the required factor approach and instrument criteria with the calculation. Do not begin with an intended low result and choose evidence to fit it. The reviewer should establish what qualifies, what remains uncovered, and which treatment applies before accepting the modeled figure.
The electricity reporting bridge organizes the underlying consumption and source records. This assurance review adds the decision about eligible instruments, factor treatment, and parallel reporting.
A market-based assurance ledger connects each electricity quantity with its approved instrument or uncovered status, factor source, reporting boundary, and supporting review evidence.
Why must location-based and market-based results remain distinct?
The two accounting lenses can use different inputs for the same metered electricity. They are not competing meter readings. Preserve the consumption ledger and identify the method used in each calculation so ownership understands why the results differ.
A procurement change can affect the market-based treatment without proving a physical change in hotel electricity use. An efficiency project can change consumption while factor revisions also affect the reported emissions trend. Those effects should be distinguished rather than combined into one unexplained improvement.
Use the benchmarking guide to review physical property and energy records. Corporate inventory boundaries and accepted accounting treatment still require the reporting team’s separate approval.
Which instrument fields need to be tested?
Review the instrument type, quantity, generation period, relevant geography, ownership, retirement, and beneficiary against the applicable requirements. Keep original documents and the reviewer’s conclusion together. A supplier description using the word renewable is not the complete test.
Match allocated quantities with the inventory’s property and period. If the purchase covers a portfolio, determine what share is assigned to this hotel and whether that share remains available for the intended statement. Do not allocate the full portfolio quantity to each property.
The certificate-documentation guide provides the evidence chain. Assurance adds the method-specific qualification decision; documents can be complete while an instrument remains unsuitable for the particular reporting purpose.
How should purchases made by a brand or another partner be handled?
The EPA May 2022 partner-procurement guidance discusses retirement, allocation, and communication where renewable electricity is purchased on behalf of value-chain partners. Keep that scope explicit. The document does not make every brand-level purchase automatically usable by every branded hotel.
Identify the purchasing party, receiving organization, intended reporting scope, and allocation evidence. Obtain the agreement or reporting confirmation establishing how the hotel should use the quantity. A shared brand can be relevant context while still leaving ownership and reporting treatment unresolved.
Preserve communications with the allocation record. If a quantity is reassigned or the reporting boundary changes, record who approved the change and whether the underlying retirement permits the revised treatment.
What should the assurance table show?
| Check | Evidence | Reason for review |
|---|---|---|
| Consumption | Approved meter ledger | Correct included quantity |
| Boundary | Entity, property and period register | Correct reporting scope |
| Instrument eligibility | Method criteria and instrument details | Purchase qualifies for treatment |
| Allocation and retirement | Beneficiary and quantity records | No unsupported duplicate assignment |
| Uncovered electricity | Required factor hierarchy | Remainder is not silently omitted |
| Parallel disclosure | Location-based calculation | Different lenses remain clear |
Include a dated exception for each unresolved item. The reviewer needs to see which quantities are confirmed, which are conditional, and which treatment was applied to the remainder.
What does a hypothetical dual-method calculation demonstrate?
Assume a fictional reporting boundary uses 600 MWh. Assume the fictional accepted location-based factor is 0.30 metric tonnes per MWh. Its modeled location-based result is 600 multiplied by 0.30, or 180 metric tonnes.
For a separate fictional market-based case, assume the reporting review accepts instruments for 400 MWh with an assumed zero factor and assigns an invented 0.40-tonne-per-MWh factor to the remaining 200 MWh. The modeled result is zero plus 80 metric tonnes.
These are teaching assumptions, not actual grid or residual factors, a determination that a purchased REC qualifies, an IHG result, or the hotel’s real emissions. The example does not establish physical avoided emissions. It shows how two methods can produce different accounting results from one consumption quantity.
How does a qualification shortfall change that example?
Assume further review in the fictional case accepts only 300 MWh of the instruments. The remaining uncovered amount is now 300 MWh. At the same invented 0.40-tonne factor, the modeled market-based result is 120 metric tonnes.
The forty-tonne change from the prior eighty-tonne case comes from instrument qualification and uncovered treatment, while the assumed location-based result remains 180 tonnes. Metered consumption has not changed in this illustration.
The reviewer should not repair the shortfall by deleting the uncovered quantity or retaining the earlier result without explanation. Record the rejected or unsupported coverage, its cause, and the revised calculation. Any actual remediation needs the applicable method and genuine replacement evidence.
What can hotel corporate disclosures establish?
The IHG 2025 ESG Data Book provides a first-party hotel-company example of emissions reporting that includes a market-based lens. It shows that such reporting concepts appear in a hotel corporate disclosure, not that every hotel uses the same boundary or achieves the same results.
This guide does not use IHG’s figures as an industry benchmark, a client result, or evidence of this site’s performance. A hotel should compare reporting methods and documentation requirements rather than borrow another company’s outcome.
Read any corporate example with its organizational scope, data year, and method intact. A publicly disclosed result can prompt questions about a property’s own assurance file, but it does not substitute for its consumption, instruments, or factor evidence.
How should the 2026 consultation be tracked?
The 2026 Scope 2 consultation feedback concerns standards development. Proposed changes in temporal or geographic treatment should remain distinct from final adopted requirements. Record the current method and the proposals being monitored.
Assign a review trigger for a final publication or reporting-program instruction. If a later adopted change affects an inventory period, document its effective treatment and any required restatement. Do not silently switch methods between years because a proposal is prominent in market commentary.
Keep procurement informed of evidence that future arrangements may need. Planning for possible changes can be useful, but the purchasing team should understand which requirements are current and which remain contingent.
What should the reviewer approve?
- Confirm the entity, property boundary and reporting period.
- Reconcile the electricity quantity with original records.
- Apply the governing instrument and factor criteria.
- Verify allocation, beneficiary and retirement evidence.
- Calculate uncovered treatment and the parallel result.
- Explain exceptions, method changes and comparability.
- Approve bounded reporting language and retain the audit trail.
For any connected supply or certificate procurement, disclose broker compensation and count its charges consistently. The approved inventory should identify its accounting lens and evidence limits without converting a reporting outcome into an unsupported claim about all hotel energy or actual grid impact.