Austin Energy began shutting off power to homes on Sunday when the Texas energy grid began to fail across the system. On Tuesday, over half of all households in Austin had no power. During this time, companies like Samsung and other semiconductor manufacturers remained powered.

The electricity used by Austin’s top 10 energy customers alone could power almost 12,000 homes. However, these top energy consumers continued to operate at full capacity until Austin mayor Steve Adler ordered industries to limit power on Tuesday.