Cost per watt of solar panelsUS youth organized sports participation
It turns out that the price of converting sunlight into electricity moves in near-perfect tandem with the likelihood that an American child will spend their Saturday morning running around a field chasing a ball, which is precisely the kind of relationship that makes you wonder if the universe is either deeply interconnected or simply bored enough to rearrange deck chairs on the Titanic. Between 2008 and 2022, solar got cheaper and kids got less organized, or kids got less organized and solar got cheaper, and honestly we cannot tell you which is the cause because that is not how correlation works but we all know that is not stopping anyone.
What probably happened is that both trends rode the same economic waves: the Great Recession crushed family budgets (solar subsidies contracted, youth sports participation dropped), then recovery came unevenly (solar panels improved and cheapened as manufacturing scaled, but parental incomes took years to rebound, and by then tablets existed). The cost per watt of solar dropped from roughly $3.80 in 2010 to under $1.00 by 2022—that is like watching a car go from $38,000 to $10,000—and in that same window, organized youth sports participation fell from about 59% to just under 50%, a shift that smells suspiciously like the same economic anxiety that makes a family choose between soccer league fees and, well, electricity bills.
What we are looking at is almost certainly a shared ancestor: the economic squeeze that began in 2008 and echoed through the 2010s, reaching different neighborhoods at different times and wearing different costumes. The correlation is so tight it seems to be saying something profound about American life, when really it is just saying that money moves families around in ways we cannot quite separate. Sometimes two things rise and fall together because they are both drowning.
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Want to learn more about why correlations like “Cost per watt of solar panels” vs “US youth organized sports participation” don't prove causation? Read our guide to statistical thinking.