☀️ Cool roof saved big energy in Sacramento store
In 2002, a Sacramento retail store showed how a cool roof coating drastically cut energy use. Researchers at Lawrence Berkeley National Laboratory monitored this store, alongside others in California. During the monitoring period from August 8 to September 30, 2002, AC energy use dropped by about 52% on hot days. This happened because the reflective coating bounced solar energy back instead of absorbing it as heat. This real-world data significantly shaped California's policy on commercial roofing standards.