Many people even working in power/energy don't realize how much interconnection costs are a hinderance. Example: see study group DISIS-2021-001 in SPP (a grid region similar to ERCOT/Texas), a good 25 % of the planned capacity was hit with an interconnection cost approx > $300k/MW (which is similar to the cost of the OP).

Predictably, all of those projects dropped out of the interconnection queue / process

https://www.interconnection.fyi/clusters/spp/disis-2021-001