That is the model currently used in the versions published in the FTB beta 1.5 packs, yes.
But go one version of Buildcraft up, and Buildcraft pipes had all their loss over distance removed. Upon which King Lemming said "OK" and removed the last remaining 5% loss-upon-entering-the-network from the conduits as well. So in the very latest version, there is zero loss over distance no matter if you use pipes or conduits, and no matter how you use them. Energy tesseracts dropped from 25% to 20% loss as well.
Instead, all Buildcraft machines (except the pump) now leak power while idle. Something to the tune of 1 MJ/t per machine, if rumors are to be believed (I have not actually tried it out). Forestry followed suit in that change; I'm not sure if TE did as well. The changelog says nothing in that vein. I'm pretty sure Railcraft is using that paradigm as well, considering CovertJaguar was the one who instigated this mechanics rework, and Railcraft machines (the few that consume MJ/t) were already lossy in idle to some degree even before.