Cool thanks, I'll make note of the 10MJ/t per face, once I have some upgraded solars those will suffice to power the farms.Don't know for sure, but I would assume that it uses the same efficiencies as PowerCrystals' other mod, Power Converters- found here.
Do note, however, that the machines will only accept about 10 MJ/t at each face (if I remember that correctly- don't quote me), but EU is uncapped, as all EU-consuming devices are. Thus, if you want your farms to run lightning-fast, use EU. Note, however, that anything over Medium Voltage (128 EU/packet) may cause unwanted behavior (not tested).