According to Moore's Law, the price of computing power is slashed in half every two years — which helps explain why personal computers become outdated so quickly. But now, as Paul Krugman at The New York Times notes, the solar energy industry is experiencing a similar trend. The price of producing solar power continues to fall — thanks to technological improvements and heavy subsidies in countries like China — and this onetime punchline of an energy sector continues to expand. Will solar power eventually overtake oil as Earth's primary energy source? Perhaps. In the meantime, a look at the shrinking cost of solar energy, by the numbers:
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