You can configure tesseracts to only send or recieve (little tabs on the right) so setting the tesseracts that should only send power elsewhere to send only mode would solve your problem of energy cells drawing power from other energy cells on that frequency. If you have nothing else connected to the tesseract there is no need to use a conduit to achieve that same thing.
Omg. I never noticed that before. I love you and you win the internets for the day, sir! Phew, now I just need 1 REC for each location! =D