Not really........

I don't recall every seeing a generator set in the roundhouse. Nor do I know where it would have been. Perhaps it was installed in the location of the 3rd boiler in the boiler room. The restroom/shower additions survived until a late 70's remodeling job that created the restroom there now. The room created for the water treatment plant was converted to the tool room, but there has been remodeling done since I left.
The electric pump for the water tank is still in there. There was a large steam powered water pump in a framed in "closet" in the back of the machine shop against the boiler room wall. It was removed in the 80's to create more machine shop space.
Chama did not get "public" electricity until after WWII the local electric co-op started. Before then the RR generated its own power and power was available in parts of town supplied by a power plant at the sawmill. At one time there was a diesel powered generating plant on Pine Ave between 1st and 2nd St's.