I have recently purchased the Emon pi energy monitor and am really pleased with the setup so far and hope to get a better understanding of the energy usage over time with our solar pv, and air sourced heat pump (LG Therma V). I use Octopus Go tariff but think it could be interesting to see whether Agile might work better.
I am also interested in a more efficient control solution than I have which is based on a Drayton Wiser system. Your relay thermostat (design) would appear to fit well, particularly because it has a great UI and timer/scheduler. I would like to see how to use it to control the heat pump and other heating related controls, namely charging heat batteries (made by Sunamp) from the heat pump during off peak tariff periods. However, noting that the previous version had three channels and as I am looking for six , can you recommend how best to expand this system? Is the older 3 channel version available?
Perhaps there is a way to replicate the UI software within the Home Assistant environment, to bring together the control of a number of relays?