Emergency light

The other night we experienced some strong winds blowing that I even thought trees will fall and hit our house.Thanked God,nothing happened after,just some branches of trees were fallen.But in the western and northern part of France,thousands of homes and buildings didn't have electricity because of storm.In times of power outage,it's better to have a generator or emergency light so that there's still a light while waiting the electricity be back to normal.It's really important to have these things for emergency purposes.