By 2018, LEDs had become the second-most common lighting in U.S. commercial buildings

According to our 2018 Commercial Buildings Energy Consumption Survey (CBECS), LED lightbulbs had become the second-most common type of lightbulb in commercial buildings. LED bulbs were reported in 9% of commercial buildings in 2012, but they were reported in 44% of commercial buildings in 2018. The prevalence of all other bulb types decreased between 2012 and 2018.