APS announces new gas generation: about 720 MW at Saguaro and about 1280MW at Desert Sun

The 2026 IRP says manufacturing and data centers are expected to drive the majority of incremental load growth. The Preferred Portfolio identifies about 15 GW of new resources and about 2.6 GW of transmission capacity needed.

APS Source: Pinnacle West Capital Corp 8-K, filed Nov 6, 2026

The investor deck says more than 84% of committed load is yet to be served and about 0.9 GW is currently served. The data center segment includes more than 15 different data center sites in the service territory, and manufacturing includes semiconductor and advanced packaging.

APSPinnacle West Source: Pinnacle West Capital Corp 8-K, filed Nov 6, 2026

The Preferred Portfolio identifies ~15 GW of new resources and ~2.6 GW of transmission capacity needed. Manufacturing and data centers are expected to drive the majority of incremental load growth.

APS Source: Pinnacle West Capital Corp 8-K, filed Nov 3, 2026

Saguaro is slated for 2030 and Desert Sun for 2032. APS also announced up to $440M to convert the retired Cholla plant to 380MWs of natural gas generation by 2029, and is an anchor shipper on a new gas pipeline expected in service by late 2029.

APS Source: Pinnacle West Capital Corp 8-K, filed Nov 3, 2026

More than 84% of committed load is yet to be served; about 0.9 GW is currently served and about 4.9 GW is not yet served. The manufacturing segment includes semiconductor and advanced packaging, and the data center segment includes more than 15 sites.

APSPinnacle West Source: Pinnacle West Capital Corp 8-K, filed Nov 3, 2026