It's better to buy a generator e.g.
Champion I recommend this generator wholeheartedly. I bought it in September 2018, despite my husband's view that we did not need it, it cost too much, etc. After the derecho of Sept 2012, our area of central Virginia had no electricity for a week. Fortunately we were able to borrow a neighbor’s generator (they were out of town) – which made all the difference: power for two fridges, lights, a fan, etc.
So I finally went ahead and bought this product over three years ago. At the very least, I saw it as a kind of insurance. We lost power for three full days this week (January 2022). I fired up the generator for the first time (see caveat below), and ran it about 8-12 hours daily to run all of the above plus chargers for phones and computers. It was a lifesaver. Even running only half of every day, the power kept contents of freezer rock solid. So it can help you with plants.