Idaho Copper Corp. (NYSE American: COPR) has announced the results of an updated preliminary economic assessment (PEA) for its 100%-owned CuMo copper-molybdenum-silver project in Boise County, Idaho. The study outlines an after-tax net present value (NPV) of $1.88 billion at an 8% discount rate, an after-tax internal rate of return (IRR) of 18.5% and a payback period of 5.9 years. The project has an estimated 46-year mine life, with initial capital costs of $1.17 billion and an additional $658 million in expansion capital planned for year five.
Average annual production 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. The updated PEA incorporates a smaller initial processing plant, X-ray fluorescence (XRF) sensor-based ore sorting and a revised mine plan designed to access higher-grade material earlier, reducing upfront capital requirements and accelerating payback.
These changes matter because they lower the initial financial hurdle for a project that is one of the largest undeveloped copper deposits in the United States. At a time when global demand for critical minerals is rising, a shorter payback and reduced capital intensity could make CuMo more attractive to investors and potential partners. The revised plan also aims to bring higher-grade ore into production sooner, which can improve early cash flow and reduce risk.
At Oct. 12, 2026, spot metal prices, the study estimates an after-tax NPV of $6.24 billion, an IRR of 38.4% and a payback period of 3.4 years. Those figures illustrate the project’s leverage to copper, molybdenum and silver prices, though such spot-price scenarios are inherently volatile and should be viewed alongside the base-case estimates.
Idaho Copper plans to advance pilot-scale testing to validate its ore-sorting assumptions and conduct the bulk of its prefeasibility study work in 2027, targeting completion in 2028. Successful pilot testing would be a key step toward confirming the technical and economic assumptions in the PEA, while the prefeasibility study would provide a more detailed engineering and cost basis for the project.
The CuMo project comprises approximately 2,640 acres and consists of 126 federal unpatented lode mining claims and 6 patented mining claims. According to the company, CuMo contains significant amounts of silver, rhenium, and tungsten – all considered critical or of strategic importance. For investors seeking more detail, the full press release is available at https://ibn.fm/cVHue, and additional information about Idaho Copper Corp. can be found at www.idaho-copper.com.
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For Idaho Copper, the updated PEA represents a key milestone as it seeks to advance CuMo toward feasibility. The company’s ability to validate ore-sorting assumptions and complete prefeasibility work on schedule will be closely watched, as will metal prices, which significantly influence project economics. If successful, CuMo could become a long-life domestic source of copper, molybdenum and silver, minerals that are vital to energy, technology and defense industries.
