This book is suitable for those who want to save money by becoming more energy efficient. It walks readers through the many alternative energy solutions that are doable and extremely efficient. It is completely revised and expanded to include the advances in science and technology. The appliances we use, the lights we turn on; these two items alone in our homes can account for upwards of 40 per cent of our total energy bill. For those who want to save money (and who doesn't?) by becoming more energy effici