After a historic power outage interrupted electrical and water service to millions of people and properties in Texas, landlords were faced with the challenge of safely and quickly restoring service to complex commercial properties.  Stemmons clients can manage that process through the Business Continuity application, but even if you are not a Stemmons user, you may find the simple excel versions of these checklists helpful.  
https://docs.stemmons.com/AppInfo.aspx?MetaDataID=1613&Value=1