The Power Extension Package (PEP) is a solar array system, that was to
 be used on the Space Transportation System (STS)
 to agument the power of
the Orbiter vehicle and to extend the time the
vehicle may stay in orbit.
This addon has been tested with SSU only.
Requires:
 SSU (latest release)
 Spacecraft3 by Vinka
Thanks to Posck and Fizyk for the suntracking .dlls
Also thanks to Graham2001 for the inspiration and
all the research.