What owners say after the grid came back.

“Six days. My oxygen machine stayed on the whole time, and the light on the front told me each morning what I had left.”

The river took the substation on a Friday. My concentrator draws about 300 W around the clock, so I turned everything else off except the fridge and one lamp. That is close to 11 kWh a day, and the roof put most of it back each afternoon.

Dorothy A.Asheville, North Carolina

“A short one. The kids did not notice until they saw the neighbors on their porches with flashlights.”

It went out during dinner and came back before breakfast. We found out from the neighbors, not from the house.

Kevin D.Tampa, Florida

“Four days without the grid. The roof refilled it every afternoon and we never ran the generator once.”

I went out every morning to look at the panels, as if I could see them working. By two in the afternoon the light on the battery was back at the top.

Nadia P.Lake Charles, Louisiana