Burning Diesel to Fake Solar PowerHow a green energy policy accidentally funded pollution

A well-intentioned environmental incentive can sometimes backfire spectacularly. In the late 2000s, Spain introduced lucrative feed-in tariffs to expand renewable energy on the grid. The financial rewards were so high that operators found a massive loophole in the system. Because the metric failed to verify the energy source, the policy inadvertently incentivized fossil fuel use instead of reducing carbon emissions.

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