Board Thread:Questions and Answers/@comment-110.143.107.211-20130715083523/@comment-5627887-20130725010305

The BioFuel Generator and BioReactor aren't anywhere near as good in Tekkit Lite as it is in new Tekkit (which I suspect you're referencing, given how much MJ you say it's making), it takes a whole load of infrastructure to feed it enough different things to keep it running. I don't actually use any engine, I just convert EU into MJ using an Energy Bridge, though we do now have a BioFuel Generator and BioReactor set up, it wasn't our primary MJ source til later in the game.