camelot-forum.co.uk

Does anyone know of system which will record electricity usage by a GSHP please? It is an old system, about 15 years, and it has a soft start but it obviously uses a lot despite that but how much?

I assume you mean electrical energy, rather than peak power, so that you can work out how much it’s using over a year or so?
Assuming that, I would recommend a mid certified electricity meter. There’s all sorts - ones that can connect to a pc, down to a basic £50 one that is inline with a display that gives total kWh from installation. Mid certified means it has a known accuracy (I think there are different levels, something like 1% and 2%), and they will all cope fine with gshp reactive power which some meters might not.

https://www.spwales.com/single-phase

Plenty meters out there, just need to interrupt the supply cable to it.

Could you use something like this - the Open Energy Monitor CT clamp on the power supply and real-time monitoring/logging?

https://openenergymonitor.org/

Also works for solar, battery, EV charging, temperature and all sorts of other metrics

Plenty of simple totalisers out there at a tenner upwards on the usual internet auction site. I would expect measuring how much and when it was used (data logging), will cost a bit more….(per dan-b).

If it runs at constant power there may be no need to continuously monitor the amount of electricity being used?

https://shellystore.co.uk/product/shelly-em/

Have you looked at Shelly -use to monitor electric import .
Have another sensor to monitor PV production but not connected yet.
George