Why a meter reading is estimated.

What an estimated reading is

When a meter cannot be read on the scheduled date, the bill is built from a calculated figure — the same period last year, or the average of the last cycles. Every utility does it, and regulators allow it. The question is not whether it happens. It is how often, and whether anyone is watching the number.

The four reasons

• No access. The meter is inside a property, behind a locked gate, or under a parked car. The reader comes back, or does not.
• Unreadable. Fogged glass, a flooded box, an index buried under soil.
• Faulty meter. The dial has stopped or runs slow. A reading exists, but it is wrong — worse than a missing one, because it looks real.
• Round not finished. Weather, staffing, a long detour. The last addresses of a round are the ones that get estimated, cycle after cycle — and they are always the same addresses.

What it costs

An estimated reading moves money in time. The next real reading corrects it with a catch-up bill, and the catch-up bill is what the customer calls about. Billing complaints are rarely about the amount: they are about a figure nobody can explain at the counter.

Three costs follow — the time spent answering, the revenue recognised late, and the trust lost each time a customer is told « it was an estimate ».

What reduces it

• Record the reason, not just the estimate. An estimate with a reason is data. An estimate without one is a hole.
• Photograph the index. A photo at the meter settles a dispute in seconds and makes the reading auditable.
• Let the customer read. A self-reading channel costs little and works best exactly where access is hardest.
• Replace what fails twice. A meter estimated two cycles in a row is not an access problem. It is a meter problem.
• Change the order of the round. If the same addresses end every round, rotate the sequence.

The one number to watch

The share of estimated readings, per cycle and per round. Per cycle tells you the size of the problem. Per round tells you where it is — a utility-wide rate that looks acceptable can hide a single round where most readings are estimated, and that round is the one generating the complaints.