Monitoring that pays for itself in electricity.
Commercial refrigeration runs around the clock. Tempa puts each cabinet’s electricity next to its temperature record and finds the waste: overcooling, doors, failing compressors.
Clamps first, meters where it matters.
A four-channel current converter with clip-on CT clamps covers a distribution board in an hour. Current alone gives a good estimate of energy (we assume 230 V and a 0.85 power factor and say so on every figure). Where true kWh matters, a Modbus kWh meter behind a LoRaWAN bridge gives measured consumption.
- Hourly and daily energy per asset, priced at your tariff including time-of-use windows.
- Overcooling: an asset held two or more degrees below its minimum for two days earns a setpoint recommendation with an estimated saving.
- Compressor health: duty cycle, sustained duty above 85 %, short-cycling, and drift against a 30-day baseline — the signatures of iced evaporators, worn seals and failing compressors.
- Door discipline: minutes open per day, correlated with the temperature rise and the energy that follows.
- Defrost recognition: periodic spikes identified and excluded from excursion statistics.
- Monthly energy report in pounds, with savings shown against each asset’s own baseline.
What two degrees of overcooling costs.
The numbers below are modelled, not measured at a customer. They show the arithmetic Tempa applies to your own cabinets once it has their baseline.
Twelve cabinets, 2 °C too cold
modelled example- Assumed consumption
- 1,200 kWh per cabinet per yearapproximate
- Site total
- 14,400 kWh/yr
- Saving per °C raised
- 2–3 %industry guidance, approximate
- Tariff
- 27.5 p/kWh
- Estimated annual saving
- 576–864 kWh · £158–£238
Tempa uses 2.5 % per °C as a conservative default, configurable per deployment. Every saving in the product is labelled as an estimate against the asset’s own measured baseline.
From insight to Shift.
Energy monitoring is the first step towards flexibility: the same current signatures, door events and thermal models tell us how much load a cabinet could hold off, for how long, without approaching its safe maximum. No control is performed today; see the vision page for what comes in 2027 and the safety rules that come first.