I totally agree with @JoeSoap, we have to let the tech bods resolve this issue. If anything switch to kw/h and go back to basics, it's what we did before all this technology was around. Take your daily kw/h x tariff + standing charge and that will give you a pretty accurate costing. It's also great for keeping the old grey cells from seizing up. 👴

Watching 👀 the energy usage is really what we need to be doing and the lower the kw/h the less you pay. Simplz. 😉