A Solar Panel Large is a large, double-ended module used to supply Power to space stations and other space vessels.
As with other solar panels, this solar panel can not be powered on until it is connected to an active power source, and requires a significant amount of space due to its extreme width when open. It will not open if there isn't sufficent room for it to do so.
These modules are commonly connected in large quantities, to supply all needed Power to the station. This is commonly refered to as a Solar Panel Farm.
It can be retracted to save space by powering it off, but, of course, will not generate power when shut down.
Once this module is activated, it generates 100 Power units, consumes 2 Power units, and thus can supply upto 98 Power units available to other modules which are connected to it.