the only hydroeletric dams i can only think of is the one that came with TS12 , its on the DLS
<kuid2:523:1972819:1> Industrial Dam Hydroeletric by Auran
I'll chime in too with this red painted Pacific shown in this video: https://www.youtube.com/watch?v=4teoPZp3Fks Apparently Trainz Forge made but I've not been able to find it on either the old or current site.
Russian Kch-4 loco and 750mm/762mm rolling stocks (also known as Chinese C2). there are some out there from trs12 that I have. It works, but the texture looks very bad. The loco is kinda outdated too as there's no working cab and the texture is quite bad. A more up-to-date version of that loco together with other Russian narrow gauge stuff would be great!
Here's a video of a Chinese c2, which is basically the same thing. https://www.youtube.com/watch?v=nFw_g23VnGI