The CrystalPower CoreMod is a dependency of the regular CrystalPower Core. It can be downloaded from the download section.
It extends the functionality of the mod by introducing new Forge Events which the mod uses for some of its features. For example, coatings use the new RenderBlocks events and cables listen to the pistons' PistonPush events.
Although the features that these events enable aren't required for proper functioning of the mod, I have not yet worked on detecting the presence of the core mod for one simple reason: negotiation between clients and servers determining which features are required. This negotiation will be implemented should it be requested by the public.