Having had a casual interest in power usage, I bought a little inductive meter with a wireless display. It proved itself, so I upgraded it to a cloud-connected

Having had a casual interest in power usage, I bought a little inductive meter with a wireless display. It proved itself, so I upgraded it to a cloud-connected one which stores huge amounts of historic data. Every so often, I download the logs and compare the usage the device has logged with the usage the electricity company has billed me for. So far, it's added up roughly correctly.