Proﬁting from Clean Energy : A Complete Guide to Trading Green in Solar, Wind, Ethanol, Fuel Cell, Power Efﬁciency, Carbon Credit Industries, and More
DEFINING “CLEAN ENERGY”
This book uses the term clean energy in order to adopt a broad deﬁnition for the topic. Other choices such as renewable energy or alternative energy are more limited and typically do not include some of the subsectors such as power efﬁciency and cleaner fossil fuels, among others, that are covered by this book. The focus of this book is a bit more limited than the ﬁeld of cleantech. Cleantech typically includes all the categories that fall under clean energy, but also includes the categories of clean water, environmental cleanup (air, water, and soil), recycling, and even broader areas such as removing toxic materials from everyday products. There are interesting investment opportunities in these areas, but they are beyond the scope of this book. There is some controversy about whether nuclear power should be regarded as “clean energy.” Nuclear power does not emit any greenhouse gases and in that regard it is clean. However, this book does not consider nuclear power to be clean because the nuclear waste produced by nuclear power is one of the most dangerous substances on earth. There is also the possibility of a nuclear leak and the release of large quantities of nuclear radiation into the air. Nuclear power has the potential to be a bigger environmental threat than coal and will not be covered in this book as clean energy.