Alright, i am currently level 294, and i am trying to get max recharge rate, from what i hear it is 120. I have
Chron-Transistor Charge +5
Omicron Injector Charge +10
2x F.A.T.H.E.R. Charge +5
3x Silthion T-Plasma Hub Charge +3
4x HyperChannel Relay Charge +27
This is giving me a recharge rate of 95 energy per hour.

I realize i am missing the Krionite Transducer Charge +8
but asside from that i should have everything so my question is : why does that +8 make a difference of 25 energy per hour? or am i mission something else?

Well, your at 38 seconds/energy so... yes.

Your energy bar starts out recharging at 1 energy per 180 seconds. As you add stuff to your ship, those +x are actually SUBTRACTED from the 180 second rate. Once you get everything, your recharge rate is 1 energy per 30 seconds.

Right now you have +142. 180-142=38 seconds per tick. If you want to see a big difference... At max recharge if you uninstall 1 relay (+27) it cuts your hourly charge nearly in half.