Something is always still running after everyone has gone home.
One meter, one number — The invoice totals the whole site. It cannot say which system stayed on.
Nobody walks the whole building — Compressed air, extraction, pumps, machines: different rooms, different switches, different people.
Silence is not proof — A system idling behind a closed door draws power exactly like one at work.
It repeats — Whatever was left on this Friday is usually left on every Friday, and that is where the money goes.
.jpg)
A sensor on the circuit reports one fact: does this system have power right now.
On or off, per system — Every circuit you cover, minute by minute, with the time each change happened.
Against your own calendar — Nights, weekends, holidays, shutdown weeks: you decide when the building is supposed to be quiet.
The hours are the missing number — You already know the rating on the nameplate and the price per kWh. We supply how long it ran for nothing.
The alert comes tonight — Not next month, while there is still someone who can go and switch it off.
Nothing rewired — No changes to the wiring, no integration with building automation.
Know that the site actually shut down — and keep the record that proves it.