US renewable electricity outputUS pet food total market sales
It would be convenient to believe that every new wind turbine somewhere makes a Labrador retriever demand better kibble, but sadly the causal arrows point elsewhere. The two lines simply happen to be marching upward in the same general direction, as many things did during the 2020s. The dogs, for the record, voted for both.
Renewable electricity generation kept rising on policy momentum throughout this period — tax credits, falling panel prices, and state mandates drove steady expansion — while pet food sales leapt in 2020 as pandemic pet adoption soared and owners spent more on their new companions than any year on record. Two trends with entirely different mechanics that both posted their steepest growth in the same lockdown year.
The correlation is the accidental rhyme of the early 2020s: everything rising, most of it unrelated, the numbers politely staying in formation. Neither the grid nor the food bowl is aware of the other. They just moved the same way.
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Want to learn more about why correlations like “US renewable electricity output” vs “US pet food total market sales” don't prove causation? Read our guide to statistical thinking.