SOQ

Supply Offtake Quantity (SOQ) represents the maximum daily gas consumption that a supply point is registered to take from the network, measured in kilowatt-hours per day (kWh/day). For larger sites, transportation charges are calculated using the SOQ rather than flat rates.

SOQ vs AQ:

• AQ = Annual Quantity (total yearly consumption estimate)
• SOQ = Supply Offtake Quantity (maximum daily demand)

For larger sites (AQ > 732,000 kWh), some charges are calculated using a power function formula: rate = A x SOQ^B, where A and B are constants published by each GDN.

When SOQ matters:

• Large industrial sites with AQ > 732,000 kWh
• Sites needing to reserve significant network capacity
• Capacity charge calculations

SOQ review: Sites can request an SOQ review if their actual peak demand has changed. Reducing SOQ can lower capacity charges, but the SOQ must still cover actual peak requirements to avoid interruption risk.