DANGIT! I told calclavia not to do exactly that. Now UE Energy == BC Energy, and therefor can't be accepted in my Machines without an Upgrade, as I consider BC Energy as kinetic Energy, which is not electricity.
Energy is not always equal Energy, there are multiple kinds of Energy. Like for example radiation, moving atoms (kinetic), moving electrons (electric), thermal energy (heat), magnetic energy, chemical energy and the good old gravity (and I even forgot some forms). It's how the Energy moves, not that the Energy moves, what powers a Machine.
Quite some modders who use UE API were in favor of the BuildCraft integration (MachineMuse, Aidancbrady, Micdoodle etc.) were in favor of that so I made the change. HOWEVER, UE electricity is NOT BuildCraft kinetic energy. It is in 2 different systems but UE's unit ratio simply changed to make conversions easier. Basically a 1 to 1 ratio. It is now 1 Kilojoule = 1 MJ. And UE is now in base Kilos because rarely anyone gets to use "1 joule of energy". In general, this makes conversion slightly easier for players and modders. I hope this ain't causing you a huge fuss.