Well, Canadian electrics can be summed into 4 categories. The Interurbans, the "Tunnel Electrics", Industrials, and the Tumbler Ridge project. We've never had any extensive electric freight/passenger systems, and only 2 that could be classified as "Mainline" Electric.
Interurban lines were basically the predecessors to the urban commuter lines of today. They linked outlying towns with the larger cities, and in some cases, like the London & Port Stanley, were actually extensive freight haulers.
Freight locomotives looked like Centrecabs
like this one on the Cornwall Street Railway, or Boxcabs
like this one on the London & Port Stanley Railway.
Interurban passenger trains were mainly motor coaches like No. 10
on the L&PS and mail/baggage was carried in cars like No. 41
on the Niagara, St. Catherines & Toronto Railway. Unpowered and powered trailers aere also commonplace.
The additions above would also make an interesting addition to the US set
This is basically my term, and covers the electrics that were used in Ontario and Quebec for hauling steam (and diesel in some cases) trains through the Detroit River, St. Clair River in Ontario and the Mount Royal tunnels in Montreal, Quebec.
The Ontario electrics were used for hauling trains out of the steep grades on the border tunnels underneath the St. Clair and Detroit rivers. These were retired in the 1940's/50's when diesels became commonplace. Montreal's network is a bit more extensive. In a previous message I showed links to both the Montreal Boxcabs and the older EMU's. There were also a few Steeplecabs
built in the 1950's.
The International Nickel Co. (INCO) had a number of electrics, but these are mainly for hauling ore from the mines to the smelters, and not adequate for long-haul service. Most of these are similar to the Interurban Centrecabs.
The BC Rail's Tumbler Ridge branch was the only heavy mainline freight electricifation in Canadian history. The GF6C
locomotives were built by General Motors Diesel in London, Ontario. This loco appears in MB's Arctic set. As I said before, CP had thought several times about electrifying its route through the Rockies, but nothing came of it. In the late 90's, the GF6C's were retired, and with CNR taking over the line, it's doubtful they'll ever see active service again.
There really isn't much to add as far as electrics go in a Canadian set, maybe a 1920's era GE boxcab/centrecab, but that'd be it until the GF6C's. Leaves us more room for steam and Diesels