Solar panel installations per year

As solar panel installations have proliferated across American rooftops, swimming pool drownings have declined, a correlation that suggests either that solar energy has a protective effect on water safety or that both trends are measuring the same thing: a nation that has decided to take long-term thinking seriously, whether that means renewable energy or pool fences. The coefficient is -0.938 across seventeen years, during which the sun has been simultaneously powering more homes and, apparently, claiming fewer swimmers.

Solar installations grew from about 80 megawatts in 2005 to over 30 gigawatts annually by 2021, driven by falling panel costs (from about $4.00 per watt to under $0.70), federal tax credits, and the mainstreaming of residential solar. Pool drowning deaths declined as safety regulations tightened: pool barrier requirements, the Virginia Graeme Baker Act, and increased availability of swim lessons all contributed to a steady reduction. Both trends reflect a society investing in infrastructure—one in energy, one in safety—during the same seventeen-year window. The solar panels and the pool fences serve different functions but share a common prerequisite: homeownership, suburban living, and the willingness to make an upfront investment for long-term protection.

Seventeen years of solar panels rising and pool drownings declining is a portrait of suburban America getting simultaneously greener and safer, for reasons that have nothing to do with each other and everything to do with the same population making different investments in the same houses. The panels generate power, the fences prevent tragedy, and the correlation between them is simply the biography of a decade of suburban improvement. The sun shines on both.