The authors provide an excellent overview of the significant drivers, ongoing developments, and potential breakthroughs in the realm of a multitude of "clean technology" sectors, including solar, wind, grid management, green buildings, biofuels, water filtration, transportation. In each chapter, in addition to the trends and recent developments, the authors identify the key players, key challenges for that technology to become mainstream, and then hypothesises on the potential breakthroughs related to that field, and which companies are in best position to achieve that.
The reader should be cautioned that the authors themselves in their introductory chapter say that they are not going to provide a "buy list" of stocks and that they use the term 'investment' broadly (to cover personal development, careers, etc. also. The reader is well-served by such an approach, since the discussion is dispassionate and devoid of the hype that surrounds the usual books on alternative energy. However, a discerning reader will be able to identify some potential investment themes and develop an excellent watchlist. Recent ETF introductions (such as those by Powershares that have a global focus) should also be on anyone's watchlist, since their portfolios seem to reflect thoughts similar to those in the book. (The authors dont mention these ETFs since they were introduced only around the same time as the book was released). Also, some of the companies mentioned in the book (such as enerNOC and Comverse) have since gone public and that info is not reflected in this book - shows how quickly this domain is changing. Another minor complaint is that while the authors provide an excellent overview of the key players in the frontlines of each of the technology, it does not provide a more detailed look at some of the indirect beneficiaries (for example, Zoltech in windpower). Apart from these minor irritations, the book is a solid addition to anyone's investment library.
The book is written in a very approachable and engaging manner, and each chapter is self-contained. The chapters on solar, wind, grid management, and water filtration stand out. The book concludes with a slightly off-beat transition into topics that an individual investor may not find immediately useful, but nevertheless, a good read. A must-have book, especially for the wealth of information you can gain for the price of a few Starbucks visits....