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Gas data guide · reviewed 16 September 2026

Business gas Annual Quantity: AQ versus actual use

Annual Quantity is an industry estimate with operational uses. It is related to consumption history but is not the same as a live bill check.

Last reviewed 18 September 2026

Key answer

AQ can update when qualifying readings are received

Xoserve explains that Rolling AQ is recalculated monthly when eligible readings are available, while Formula Year AQ is set for the formula year. Suppliers and shippers handle the relevant industry processes for an end customer.

Engineer recording a commercial meter reading in a plant room, relevant to business gas annual quantity: aq versus actual use
Dated readings help a business distinguish measured use from estimates.

When to ask questions

A business may want to compare the consumption used for a quote with current operations after a long vacancy, changed opening hours, new heating equipment or altered production. Provide recent readings and explain the expected ongoing pattern.

Do not assume that a difference between AQ and a simple annual total proves overcharging. Billing, estimation, correction and transportation processes need to be considered separately.

  • Gather dated meter readings.
  • Record material operational changes.
  • Ask the supplier which consumption figure supports the quote.
  • Request an explanation before seeking a correction.
  • Keep the response with the procurement record.
Finance manager reconciling energy usage with a commercial invoice, relevant to business gas annual quantity: aq versus actual use
Usage records make invoice and renewal checks more reliable.
Facilities manager and electrician checking a commercial electricity meter, relevant to business gas annual quantity: aq versus actual use
A safe meter check can confirm the supply and equipment behind a business bill.

Sources

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