SeNtIMeL, i have a bugreport:
Even though it points at my addon, when I delete Advanced Solar Panels, it works fine. Are you overriding IC2 API?
EDIT: checked ASP's jar. IC2 API is fine. That is really weird. Needs investigation.
If I was you I wud update IC2 cause you're using a pretty old version
From your crash log (industrialcraft-2-dev-deobf_2.0.131-experimental.jar)
(Com on guys I thought that you learn to check your mods to be update but you never learn) her is tip for your check for updates every 24 h
Addon updated !
ChangeLog of Advanced Solar Panels v3.3.9
+ Ported to new IC build 2.0.160 experimental and Minecraft 1.6.2 (Required Forge > 126.96.36.1996)
+ Now energy packets not work in Quantum Generator ! (New IC2 energy net)