Hi @smeloney,
Thank you for your question! Currently, the set of Model Ready Datasets publicly available to Free Trial users is limited to the ENET39, the ENET138, and the Tutorial models. My top recommendation would be to stick with the ENET39 unless it is absolutely necessary to change the topology of the network. Please keep in mind that the geospatial data is purely suggestive and has no impact whatsoever on the modeling results. If the background map is distracting, you could simply turn off the Base Map visualization. However, if you must reduce the size of the model, I have a couple of recommendations for you to choose from.
Option 1: Prune the ENET39
You could easily remove a few “tails” from the ENET39 to reduce the number of nodes from 39 to 26. You can do this simply by right-clicking on all of the branches you want to delete and select delete branch(es). This will automatically also delete the nodes and the externals connected to them. I would recommend exercising some care in deleting those externals and perhaps first moving them to the main part of the network before deleting that section.
Option 2: Use the ENET138
If the geographic size of the network is what is most important, you could use the ENET138. While it has many more nodes (138 as opposed to only 39), it represents a much smaller system from a geographic perspective. However, please consider your modeling objectives before switching to this dataset; the ENET138 dataset represents a distribution feeder, not a bulk transmission system. While it is possible the ENET138 may align better with what you are imagining for your dataset, it is also possible that it is not well suited for your project because in its current form it does not represent an electric power market. Although it would be possible to modify it as such, this would require some work should it be necessary.
Best of luck with your project!