How many threatened birds and tortoises would you be willing to sacrifice to build a commercial wind farm, or a utility-scale solar array? It's an oversimplified way to frame things, of course, but it highlights the reality that renewable energy has environmental impacts, too.
No matter where you travel, or who you leave behind, the end goal is to make your pet's day consistent and routine. Select an option that will give you the greatest peace of mind. Now pack up, unplug, and enjoy yourself. Bone voyage!