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In page San Luis Valley:

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The San Luis Valley is an alpine desert environment which is conducive to solar energy production. It has the highest per capita concentration of home-based solar energy systems in the United States.[citation needed] Colorado law requires that 30% of the power used in the state be generated from renewable sources by 2020. It also requires that 3% of the power generated be used at or near where it is generated; i.e. distributed generation.[1]