Question Regarding a Power Bar that can Store Extra Power

Hello fellow playstation users,

I was wondering if there is a device that can store extra power in case there is a power outage. My area is having major issues with hydro and I really would like to turn off my ps4 properly and safely, if the power goes out. Luckily I do have a good power bar that can protect it from surges, but of course when the power goes out the ps4 is forced to shut off, making me fear for my save data. I would appreciate any help on the matter and have a great day!