It may not be as entertaining as the paperback blockbuster you took on holiday and although it is written from an academic perspective, this short - free - book certainly provides food for thought...
The title of the book (a bit of a mouthful in itself) is:
"Beyond Renewables:
Rediscovering Renewables by Tapping the Zero Point"

click here to download the book
It's written by Paddy Logan Leckie of the School of Sustainable Development at St Andrew's University in Scotland.
It is an Open Source publication, the content of which does not necessarily represent the views of Watt-Knots Limited, nor does Watt-Knots warrant the accuracy of facts stated in the book.
For anyone wishing to explore the subject further, much more information on Zero Point Energy, including videos, articles, books, discussions and presentations can be found on the internet.
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If you woul like to discuss any aspect of your energy needs or would like to know how we could assist you with renewables, please email us at:
solutions@watt-knots.co.uk with your name and 'phone number, and we'll be in touch. Unfortunately, our expertise does not yet extend to Zero Point Energy!