I have 2 tasmota smartplug with energy monitoring, i added the energy-usage to it with an integral sensor helper. I wanted the combined power usage of both smartplugs (as they’re one set), so i made a helper which sums up both energy-usages. that works.
now i want it to show the electricity costs too. thinking it’d be simple with a template helper like {{ (states('sensor.current_charge') |float(0) )* (states('sensor.ourhome_electricity_price') |float(0))}} but this won’t show the accumulated cost.
any suggestion on which helper to use?