# Kaiser Aluminum completes $25M expansion at Trentwood rolling mill

Kaiser Aluminum has completed a $25 million expansion at its Trentwood rolling mill in Spokane Valley, Washington, including an expansion of its horizontal heat treat furnace that boosts output by 5%. The project was completed in late October 2025.

- Type: Expansion
- Announced: 2025-11-06
- Where: Spokane Valley, Washington, United States
- Value: $25.0M
- Starts operating: 13 Nov 2025
- Status: completed
- Capacity: 5% output increase
- Products: heat-treated flat-rolled aluminum products
- Sectors: [Steel and Metal Products](https://endata.com/sectors/steel-metal-products.md)

## Companies

- [Kaiser Aluminum](https://endata.com/companies/7296.md)

## Sources

- [spokanejournal.com](https://www.spokanejournal.com/articles/17684-kaiser-aluminum-completes-25m-expansion-at-trentwood-facility), 2025-11-06: "We are incessant planners; we plan all year long what our next five years is going to look like, and when we’re done with that, we start over again."
- [news.metal.com](https://news.metal.com/newscontent/103620134-kaiser-aluminum-completes-25m-expansion-at-trentwood-rolling-mill), 2025-11-13: "Kaiser Aluminum has completed its $25 million expansion project at the Trentwood rolling mill in Spokane Valley."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.