The length of time meat can stay frozen in a Sub-Zero freezer without power depends on several factors, including the initial temperature of the freezer, the ambient temperature in the surrounding environment, the amount of meat stored, and how well-insulated the freezer is. Generally, a well-maintained and fully loaded Sub-Zero freezer can keep food frozen for up to 48 hours or more without power. However, it's crucial to avoid opening the freezer door unnecessarily during a power outage to retain the cold temperature for as long as possible. If the power outage lasts for an extended period, consider moving the meat to a backup power source or transferring it to another freezer.