Energy cost meters record how much power consumers draw from the socket. In this way, they help to track down energy wasters in the household.
But even if you avoid such extreme outliers, 40 to 50 cents/kWh are now due for electrical energy, and the trend is rising. That’s where saving electricity comes in handy. To do this, it is important to track down those electrical consumers in the household that swallow the most. Because with them, thrift pays off particularly quickly.
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This is where energy cost measuring devices, or EKM for short, help: placed between the socket and the consumer, they record the energy flowing through. Based on the active power (watts) displayed, you can see what a device is currently drawing from the power grid. For a consumer with a fluctuating load like a refrigerator, this will be quite little most of the time, maybe half a watt. But when he starts up his refrigerant compressor, the output jumps up to a few dozen watts, only to drop again after a few minutes. Other household appliances that are used relatively rarely, such as washing machines or tumble dryers, behave in a similar way.
