You don’t want to install anything permanent since you’ll have to remove them when you move out. You can get portable solar panels + those big Anker portable batteries that can run full sized appliances. But a more meaningful way to help the environmenf is to do composting. Up to 80% of the weight of your household waste is compostable material. Simply composting them drastically reduces the amount of waste from your house to the landfill. Plus no more smelly watery garbage bags and now you can plant veges.