Basics
The Basics
Solar modules make electricity when exposed to sunlight. They do not store the electricity. The current is proportional to the sunlight; more sunlight, more current.
Modules do not depend on heat to work. In fact, they produce less power at higher temperatures.
Solar modules are not damaged if exposed to rain or freezing temperatures, if the wires are not connected to a load, or if the wires are shorted together.
Solar modules generate direct current (DC) which can be used to run DC equipment or charge batteries. The DC can be converted to alternating current, the type used in your house, by using an inverter.
Most utilities allow you to supply electricity to the utility grid and run the meter backwards. You can then use electricity from the utility grid when the sun is not shining. The net effect can be the elimination of your electrical bill.