John Gulland and Wendy Milne power their home almost entirely with renewable energy. They started converting their home to renewables about eight years ago, and now rely almost exclusively on wood, wind and solar energy to power and heat their home, offices and workshop. The choice to use renewable energy does not come without challenges, say Gulland and Milne, and they admit they’ve made a few mistakes along the way. Here are the details of what they learned in the process of converting their home to renewable energy, a process that Gulland and Milne say has changed the way they think about energy.