@Jenny2143
Just some ideas for the future...
I advise my Host clients to sign up for notifications from their utility company in order to be quickly notified of any power outages (most provide this option). This enables them to be aware of the issue before a guest arrives and come up with a plan. If the guest has already started the stay, this will also give you immediate notification there is a problem.
If you have a smart thermostat, smart lock, or the ability to monitor your internet via an app, these will also send notifications via a phone app if they aren't working (power outage) in most cases.
If power outages are common in your area...you might consider investing in a backup generator. Your profile says "Guest" so I wasn't able to look at the listing to see where it is located.