most of the cost here is coming from generation, especially given that these plants are often being colocated with the data center and the companies themselves are oftentimes financing the transmission lines. i agree where possible, transmission costs (and associated liability) should be internalized to the particular consumer (also in residential fire-prone areas).
This is not the case for AEP customers in Ohio. Our transmission costs have increased so much over the last few years that many are paying almost as much for transmission as generation (on $200+ bills). The Columbus Dispatch recently wrote about it after so many people posted their bills in the Columbus subreddit.
