Hi @Winson5,
Im fact, your question is truly how to identify your different cost that you could have on your home with new guest ??
This depends so much on your local regulations.
here in Canada, I advise my guest in my guide, to lower the heating at night and when they leave for the day to avoid to spend electricity when not needed.
you should ask the question about your cost to people around you that have a similar home
.
Annie