Additionally, the desert nights are known to be very cold, which could offset the heating costs due to the natural low temperature of the surrounding air. That said though, the obvious factor that the solar arrays would not be being powered during the night would necessitate large batteries in order to keep the energy stored for night time mining. Possibly the set-up would be arranged to work at reduced capacity during the day, so the systems would not overheat and the batteries could be charged, and run a full power at night, using the natural coldness of the desert to keep temperatures low and running off of battery power. This would mean unequal performance throughout the day, but it would most likely be necessary to work in the desert environment.