hi there, actually yes. basically a great tool, I think in my usecase it wont help much because i dont want to estimate the power consumption of many entities nor groups. AFAIK it cant be used to calculate the costs in relation to the energy used.
I stopped doing energy stuff recently because it was becoming compulsive (gotta have smartplug in every socket… ) and not telling me much that wasn’t common sense. However, I remember that Powercalc had a global setting enable_autodiscovery: false which made it ignore everything that wasn’t specifically set up in yaml.
But anyway, I had templates to calculate costs for individual devices and although you can’t put them in the official energy dashboard, you can create your own dashboard using cards from it, with other graphs to illustrate costs: