denman,Generally interference is a problem, that is:-...

denman,
Generally interference is a problem, that is:
- interference from the BPL to local TV and ham wireless radio, these local ham radio networks are often quite important during emergencies. However depending on the various filtering and notching technologies applied, it might be reduced enough
- interference on internet signal in powerlines from strong local sources, for instance a hacker decides to parks his truck with a huge radio frequency generater near to a power line and disrupt all internet over powrlines in that area.

There could also be some problem with local surges and large electrical equipment operating nearby , such as an arc welder, or a contruction site with electrical cranes etc in the same area as you.

But the effects of these will generally be determined and evaluated during the testing.

From what I have read, various BPL trials have started up in various parts of the world from time to time and have generally stopped due to cost, and a variety of practical problems. Some trials have continued as come stage of a commercial operation.

The technology does seem to be advancing so one day it might make sense.

One comment I read a while back from someone who seemed to be in the picture, is that the FCC (in US) approved BPL for implementation in US since it was the least likely option to work, but they needed to have some competition to the cable companies.
The cable companies wanted competition that was not-competitive.
But hard to tell the truth of this story.