TP-Link's smart plug Tapo P115 scores with a slim design that leaves neighbouring sockets free. As one of the cheapest models tested, the P115 impresses with solid consumption measurement and acceptable self-consumption.

... The app readily spits out the current energy consumption in real time, that of the whole day, the past 30 days or the whole year. In this way, energy guzzlers in the household are quickly uncovered and can be eliminated accordingly. In addition, this information gives you a better feeling for how much energy the devices you use really consume...