Martin, I don't know that there are any CENELEC standards, there may or may not be, but there is a whole movement of people who want to do all manner of weird and wonderful things on the Powerlines with names such as CEBit and the like.
CEMA in the USA is involved in this and Shazia Azhar can probably give you some information, on condition that you don't alienate her affection for me in the doing. Ciao, Vic
