The photovoltaic learning curve is popularised as Swanson's law

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The regularity that module prices fall by roughly twenty per cent for each doubling of cumulative shipped volume is named in the popular press for Richard Swanson, the founder of SunPower, by analogy with Moore's law. The naming matters more than it should: it made the relationship legible to non-specialists at exactly the point when official forecasts were still projecting flat costs, and the analogy with semiconductors — a manufactured, mass-produced good — carried the correct intuition about why solar behaved as it did.

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