Introduced by Dapol at the same time as their first Electric locomotives, were their catenary system NCAT1. This consists of a pack of ten single masts. The base is a screwed section that passes through a hole in the baseboard and held in place by the wing nut - also supplied. It would be difficult to attach wires but would still give the effect of having a catenary system, but cheaply. In addition, the wires would get in the way when one has the inevitable de-railment! Anyway, this would be ultra-modern because it would be wireless!!
Please note that the price shown is cheaper than when I sell these at shows, because this shop site will be adding a fixed sum for postage. If you intend to buy several of these packs, please contact me for a total price.