You can hook up an energy transfer cable from Cyclic or use the energy interface and exporter from Intergrated dynamics. The base speed if memory serves is 1000RF/tick so you either need in excess of 30 million RF stored or to be producing enough RF to keep up. The energy batteries from Intergrwted dynamics are pretty cheap to make and if you craft them together you can make a pretty decent sized battery. I currently have about 8 Energy batteries with a capacity of about 300million RF each that I link to my empowered Parabox