When the annex has invoices but no half-hour meter
How we treat monthly annex bills inside a resource consumption assessment when the main shed has interval data and the annex does not.
Lease files love precision. Annex bays rarely offer it. A common pattern in South East Queensland warehouses: the main shed exports half-hour electricity, while the annex only appears as a monthly retailer invoice — sometimes still pooled with yard lighting.
What we do first
We draw the electrical boundary on paper with the site electrician or facilities lead. If the annex truly shares a board with yard lights, the invoice is not an annex meter by another name. The findings pack must say that.
Normalising without false confidence
Where only monthly kWh exists, we present annex consumption as monthly totals and seasonal ranges. We may estimate a share by floor area or dock count, but that estimate carries an inferred label, never observed. If a client needs annex figures for negotiation, we recommend a temporary logger or a proper submeter before the next lease round.
Night checks still matter
Even without annex interval data, a short night visit can show whether yard lights and dock gear stay energised when the annex is empty. Those observations sit in the narrative section; they do not invent a kilowatt-hour column.
Takeaway for clients
Ask for the meter hierarchy before you commission deep analytics. A clean resource consumption assessment is faster — and more honest — when everyone knows which spaces still live on monthly paper.