Switching your home to run at least partly on renewable energy, while potentially not as inexpensive as it once was, is arguably easier than ever. If you have sun hitting your home, you can capture it as energy and store it in a big battery, passing it to your appliances as they need it. This is unless, of course, you’re among the one-third of Australians renting their home, in which case the decision to bolt big panels to the roof is not yours to make. It would be fair to wonder whether it’...