Energy sub-metering over cellular

A building has one utility meter and a dozen questions about where the energy goes. A cellular controller reads the sub-meters already in the switch room, or clamp-on current sensors where there are none, and turns a monthly number into a load profile per circuit, without a cable to the office or an IT project.

An electrician with a clipboard stands at a row of open electrical distribution boards in a building switch room

What goes wrong without it

Meters read once a month

Somebody walks a route with a clipboard, and a fault that doubled a circuit's load ran for weeks before the bill showed it.

Costs nobody can split

Tenants, departments or production lines share a bill nobody can allocate with evidence.

Baseload at night

Equipment left running out of hours is invisible in a monthly total and obvious in an hourly profile.

What gets read in a switch room

SignalHow it is readWhat it tells you
Energy metersRS485 Modbus RTU, from the meter register mapEnergy, power, power factor and per-phase values
Pulse-output metersPulse output on a digital inputConsumption from older electricity, gas and water meters
Circuit currentClamp-on current sensor over RS485Load on a circuit that has no meter
Room temperature1-Wire or PT1000 probeA switch room running hot

Four ports on one Genesis controller, and RS485 devices share a bus, so most sites need one unit.

From a reading to the person on call

Thresholds per point

Minimum and maximum on each sensor, with alerts to the people on the list. Acknowledgement is recorded against the alarm, so a handover shows what was already seen.

Nothing lost when the link drops

Readings are stored on the controller with their time and sent in order when coverage returns, so the record has no gap where the incident was.

A history you can hand over

Full-resolution history, exported to Excel for a report, an insurer or a contractor, or pulled into your own system through the REST API.

Contractors see what they maintain

A device can be shared with a service company without sharing a login, and they see nothing else on your account.

Sensors and pages for this application

Frequently asked questions

Is the data good enough for tenant billing?

The measurement is as good as the meter it comes from. A certified meter stays the instrument of record when the controller reads it; the controller gets its numbers off the wall and into a system.

What if our meter is not on the supported list?

Send the model and its Modbus register map and we add it.

Does it need a network or a power supply at the site?

Neither. The controller connects over 4G-LTE and runs on its rechargeable battery, with solar or a 6 to 32 V DC supply where readings need to be frequent.

Can we keep the instruments already installed?

Usually, yes. Over fifty sensor types are supported today and more are added on request, including RS485 Modbus instruments from their register map.

Tell us about the site

What needs watching, which instruments are already there, and whether the site has power and coverage. We come back with what a Genesis would read and what the installation involves.

Talk to us →