EU <-> RF 3:25 (approx. generator vs steam dynamo with charcoal)
EU <-> FZ Charge 1:1 (based on smelting energy use, not final)
Actually it is EU <-> RF 4.0 (selset by Thermal Expansion), and factorysation is not what you think.
the ratio between EU <-> FZ charge is 10,3 FZ charge are 1 EU. (that is a long number which i calculated down a little bit: 10,285714285714285714285714285714)
the ratio is based on the first mod that supportet FZ energy and that is Powerconverters... (If i am wrong with the first then correct me).