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PUC technical conference warns delivery limits and $2.5 billion transmission need could block 5 GW by 2029
Summary
Commissioners and company witnesses said a DC transfer‑limit study shows that bringing roughly 5 GW onto the grid in 2029 would require significant transmission upgrades, and the company cited an order‑of‑magnitude $2.5 billion incremental investment estimate tied to JTS phase 1 modeling and CCPG work.
A Public Utilities Commission technical conference on proceeding 21-0141E on near-term procurement highlighted transmission constraints that may limit the ability to deliver roughly 5 gigawatts of new generation by 2029.
Commissioner (questioner) Mr. Detsky pressed company witnesses about an open-access transmission tariff and modeling in a DC transfer-limit study, saying the study shows "you essentially have to back down a lot of the system as it exists today to get power to flow." He warned that attempting to interconnect and deliver 5 GW next year without mitigations would be difficult.
Company witnesses acknowledged the limits. "Everything that we have seen and produced has shown that, to…
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