The enlightening, best-selling book on understanding sustainable energy and how we can make energy plans that add up.

If you've ever wondered how much energy we use, and where it comes from - and where it could come from - but are fed up with all the hot air and 'greenwash', this is the book for you. Renewable resources are 'huge', but our energy consumption is also 'huge'. To compare 'huge' things with each other, we need numbers, not adjectives.

Sustainable Energy - without the hot air addresses the energy crisis objectively, cutting through all the contradictory statements from the media, government, and lobbies of all sides. It gives you the numbers and the facts you need, in bite-sized chunks, so you can understand the issues yourself and organises a plan for change on both a personal level and an international scale - for Europe, the United States, and the world. In case study format, this informative book also answers questions surrounding nuclear energy, the potential of sustainable fossil fuels, and the possibilities of sharing renewable power with foreign countries.

Written by David MacKay, who was an esteemed Professor of Engineering at the University of Cambridge and Chief Scientific Advisor to the UK Department of Climate Change, this is an uplifting, jargon-free and informative read for all. In it, David debunks misinformation and clearly explains the calculations of expenditure per person to encourage people to make individual changes that will benefit the world at large.

If you've thrown your hands up in despair thinking no solution is possible, then read this book - it's an honest, realistic, and humorous discussion of all our energy options.

David MacKay was a Professor in the Department of Physics at the University of Cambridge, a Fellow of the Royal Society (FRS) and Regius Professor of Engineering at Cambridge University. He is internationally known for his research in machine learning, information theory, and communication systems, including the invention of Dasher, a software interface that enables efficient communication in any language with any muscle. David was previously a member of the World Economic Forum Global Agenda Council on Climate Change and Chief Scientific Advisor to the UK Department of Energy and Climate Change, and in the 2016 New Year's Honours List was awarded a knighthood for services to Scientific Advice in Government and Science Outreach. He passed away in 2016 at the age of 48.