@derek There's a high chance that if you're thinking about these topics you're already doing more than most. In that case I wouldn't sweat the details or get lost in details and take a case by case decision based on how you feel like.
In the end we must remember that we need systemic change at scale holding corporations accountable. If we're stressing over every lightbulb in our every homes we're micro-optimizing only to feel better individually.