Re: Saving power and water...

Auto lights help with power. Off the grid I think removes them altogether, but without eco-lifestyles I think that means you can't use anything electric on your lot. Upgrading objects helps reduce their pull, and each object that uses power and/or water has a rating in the build/buy catalog. Look at the rating and it'll help you out. I think the higher the rating the lower the bill (but I'm not certain).