““To do so, we first have to learn to see it for what it is—by cutting through all of the buzzwords, the marketing hype, the pseudoscientific shibboleths and mumbo-jumbo. Then we have to learn to evaluate it: if it is efficient, then by what measure, and who stands to benefit from its efficiency? Efficiency as a euphemism for corporate profitability shouldn’t fool us. Efficiency is a measure that relates productivity (output) to labor and resource inputs; it is meaningless unless we understand all the implications of these inputs and outputs. For a solar panel, does it simply input solar radiation and output electric current? No, its input is all the energy—mainly from fossil fuels—that went into mining, refining, fabricating, finance, design, research, sales, shipping, installation, tech support, maintenance and disposal. Its output is, yes, a modest amount of electricity. It could well turn out that your solar panel is a way to convert a lot of fossil fuel energy into a bit of electricity with the help of sunlight. How efficient is that? Perhaps it would be more efficient to use less electricity—or to not use electricity at all.””
