The people down the street from me in Houston are currently powering their house with their solar panels, actually. They were able to loan their generator to their neighbor. We had to abandon our house.
Looks like at June 21 (picking a day around the summer solstice) sunrise is at 4:04 am and sunset is midnight. That's a nice 20 hours of sunshine.
On the flip and dark side, Dec 21 it is sunrise at ~10:30 am and sunset at ~3:30 pm. A sadly short 5 hours of sun. Ouch.