Gavin D J HarperGavin D. J. Harper is the author/co-author of a number of books including Domestic Solar Energy (Crowood, 2009) and Small-Scale Wind Power Generation (Crowood, 2010). He writes extensively on sustainability issues and is currently researching the subect of green business models for sustainability for a PhD at Cardiff University Business School. Gavin is a member of the Institute of Engineering and Technology, and holds two honours degrees from the Open University and three masters degrees. Read More Read Less