Another in my series of fighting windmills. This is an email I sent to Origin. Didn’t get a reply.

Hi there,
I noticed on our bill you list total energy used in kWh – I was wondering why you do this, rather than simply measure kilojoules (kJ)? As 1 Watt is 1 Joule per second, our bill of 17.2 kWh means we used 17.2 kilojoules per second, for an hour during the last 3 months. Instead of the rate we used energy, wouldn’t it be simpler to just state the energy used – in this case 61,920 kJ?