
I don’t read many books. I really mean that. I read a book perhaps once every couple of years. So no-one is more surprised than me when after 3 days I’m 100 pages into a 350 page tome full of graphs, tables, lengthy footnotes and other cerebral stuff.
I first heard about David MacKay’s “Sustainable Energy – Without the Hot Air” on one of my favourite BBC programmes “More or Less” which does a great job cutting through the statistical misrepresentations we are routinely fed in the media, which never lets an honest examination of the figures get in the way of a sensationalist headline.

David MacKay
David MacKay’s friendly writing style and his simple presentation of the issues and clear, colourful graphics makes this book a surprisingly easy read. It’s educational value for anyone trying to get to grips with how to modify their lifestyle to meet the challenge of living on less energy is enormous. It blows away many myths, as he explains in uncompromising terms:
“We are inundated with a flood of crazy innumerate codswallop. The BBC doles out advice on how we can do our bit to save the planet – for example “switch off your mobile phone charger when it’s not in use;” if anyone objects that mobile phone chargers are not actually our number one form of energy consumption, the mantra “every little helps” is wheeled out. Every little helps? A more realistic mantra is: if everyone does a little, we’ll achieve only a little.”

Rebecca Willis
The “More or Less” programme also featured Rebecca Willis from the government’s Sustainable Development Commission which doesn’t like some of David Mackays sums on Nuclear Power. She commented:
“David MacKay’s approach is to boil it all down to a giant equation…it’s not about giant equations…it’s essentially about how we can lead happy lives while using a quarter of the carbon we do at the moment…for me it’s not a technical question it’s a profoundly political one.”
What’s all that supposed to mean Rebecca? Of course our country’s energy policy is ultimately a question for the politicians to decide – that’s why we elect them. But to claim it’s not a technical question is a bit like claiming a car can run on will-power. How can politicians make informed decisions if the options they are given are not technical accurate and represent reality?
Willis’ substance-free critique seems to expose the problem the SEC is having backing its recommendations with numbers, a fatal approach which if continued will lead to its being consigned to the quango dustbin with the next change of government.
Sustainable Energy Without the Hot Air is downloadable as a PDF, or you can read it online, or order a copy from a bookshop .
Here is a YouTube video from David MacKay.
Here are some quotes from the 5 star reviews on Amazon – all of which I agree with.
“This book is an amazing performance: sharp, accurate, quantitative and at the same time clear, entertaining and compelling, not to mention beautifully illustrated with great photographs and informative diagrams and maps.”
“Quite staggeringly brilliant. Real science, real numbers, and real, strong conclusions, but with such a light, accessible approach that the reader doesn’t even notice how difficult the concepts are that they have just understood.”
“It’s rare to find a book that is so full of good, scientific facts and well-researched figures, and yet is so enjoyable to read….I think we should be lobbying the BBC to make this into a documentary series. It would also be a great basis for A-level physics teaching. There aren’t many books which fit both roles so well.”
“This is the book I was waiting for: someone has done the research and put credible broad-brush energy numbers down on paper, and it’s surprisingly entertaining as a bonus.”
“If you want to know the scale of the sustainable energy/climate change problems we face, and what scale the possible solutions need to be, get this book. If you’d prefer to believe that buying a Prius will save the world, don’t get this book.”
“This has to be one of the most well written books I have read in ages. Professor MacKay brings all forms of energy down to the rule of thumb, making the scale of the problem understandable.”
So if you know anyone half interested in the topic of sustainable energy, point them to this book or buy it for them. It’s a gem.
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