Category:PowerCrystals' Mods

Tekkit uses two of PowerCrystals' mods. The first of which, Nether Ores, adds numerous ores the the Nether dimension.

The second, Power Converters, adds block with the ability to convert BuildCraft power (MJ) into Industrial Craft power (EU) and vice versa.

You can find the official Mincraft Forum forum thread here