Changing source name in Energy dashboard? And why is cost not accurate?

1. Is there a way to change the source name shown in the Energy dashboard without changing the actual name of the entity?

I inlude “kwh” in the name because I want to be able to distinguish it from other entities when viewing everything as a whole. But when I’m in the Energy dashboard, seeing “kwh” is kind of redudant. I’d like to just change the name in this dashboard so rather than: “Dryer active energy draw”, it would just say “Dryer”

2. Also in the picture you can see dryer has used .65kwh and cost is $.03. But then the basement lights has used .98kwh and the cost is $0. But I have them both setup as the same static price.