# Idaho Copper reports US$1.878 billion after-tax NPV in preliminary CuMo study

> The preliminary economic assessment projects a 46-year mine life, but it is not a construction decision.

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- Section: Business
- Country: United States
- Published: 2026-10-15T21:30:20+00:00
- Updated: 2026-10-15T21:30:20+00:00
- Event / data period: 2026-10-14
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On October 14, Idaho Copper announced an updated Preliminary Economic Assessment for its CuMo copper-molybdenum-silver project in Idaho. The base case gives an after-tax net present value of US$1.878 billion at an 8% discount rate and an after-tax internal rate of return of 18.5%.

The model assumes US$1.169 billion in initial capital and US$658 million of expansion in year five. Average annual output over the first 21 years is projected at 41.6 million pounds of copper, 30.5 million pounds of molybdenum and 1.36 million ounces of silver.

## Data

### Idaho Copper reports US$1.878 billion after-tax NPV in preliminary CuMo study

Idaho Copper reports US$1.878 billion after-tax NPV in preliminary CuMo study

Methodology: A PEA is preliminary, partly based on inferred resources and estimates no mineral reserves. Resources are not reserves; no construction decision has been made and results are not assured.

| label | value | unit | period | basis |
|---|---|---|---|---|
| After-tax net present value (base case) | 1.878 | billion USD | 2026-10-14 | estimate |

Sources: <https://www.globenewswire.com/news-release/2026/10/14/3380738/0/en/idaho-copper-announces-results-of-updated-preliminary-economic-assessment-for-the-cumo-project-after-tax-npv-of-us-1-88-billion-18-5-irr-and-a-46-year-mine-life.html> · Download data: [JSON](https://newsverum.com/api/v1/articles/idaho-copper-updated-cumo-preliminary-economic-assessment/data/reported-measures?lang=en&format=json) · [CSV](https://newsverum.com/api/v1/articles/idaho-copper-updated-cumo-preliminary-economic-assessment/data/reported-measures?lang=en&format=csv)

## Sources

- [Idaho Copper via GlobeNewswire](<https://www.globenewswire.com/news-release/2026/10/14/3380738/0/en/idaho-copper-announces-results-of-updated-preliminary-economic-assessment-for-the-cumo-project-after-tax-npv-of-us-1-88-billion-18-5-irr-and-a-46-year-mine-life.html>) (Source checked: 2026-10-15; Published: 2026-10-14)

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