Midwest (Midwest Main) PEA: C$965M NPV, 82.7% IRR
Denison Mines Corp.'s Midwest (Midwest Main) in Athabasca Basin, Northern Saskatchewan, Canada has a Preliminary Economic Assessment (PEA) outlining an after-tax NPV of C$965M, an after-tax IRR of 82.7%, and initial capital of C$254M.
Denison Mines Corp.'s Midwest (Midwest Main) has reported Preliminary Economic Assessment (PEA) results for the uranium (u3o8) project in Athabasca Basin, Northern Saskatchewan, Canada. The study headlines an after-tax net present value of C$965M at a 8% discount rate. It reflects Denison Mines Corp.'s (DML.TO) latest disclosed economics for the asset.
Economics. The after-tax NPV is C$965M using a 8% discount rate. After-tax IRR is 82.7%. Initial capital expenditure is estimated at C$254M. The study models a payback period of 0.5 years. All-in sustaining costs are pegged at 25.78 USD/lb U3O8. Economics are based on US$80 /lb U3O8 (base case).
Production and mine plan. The project envisions an isr (in-situ recovery); eis approved as open pit with processing at mcclean lake operation. Average annual production is approximately 6.1 M lbs U3O8 per year. Average head grade is 3.4% U3O8 (Indicated resources); 2.6% U3O8 (potentially mineable resources).
Resources and ownership. The company holds a 25.17% interest in the project.
These figures are extracted from Denison Mines Corp.'s technical disclosures and reflect the most recent PEA on file. Compare this project against other developers and producers in our project economics database, and always verify the numbers against the original technical report before making any investment decision.
Reserves & Resources
| Category | Tonnage | Grade | Contained |
|---|---|---|---|
| Indicated | 510,000 tonnes | 3.4% U3O8 | 38.7M lbs U3O8 |
| Inferred | 905,000 tonnes | 0.54% U3O8 | 12.7M lbs U3O8 |
Our Analysis
- IRR after-tax
- 82.7%
higher than 92% of 335 projects we track
- NPV after-tax
- C$965M
higher than 65% of 433 projects we track
- Initial capex
- C$254M
26% of NPV
costlier than 50% of 433 projects we track
- Payback
- 0.5yrs
slower than 1% of 270 projects we track
- Discount rate
- 8%
- Study price assumption
- US$80 /lb U3O8 (base case)
The outlier here is the combination of an 82.7% after-tax IRR and a C$254M build cost, a pairing that ranks in the top decile of the projects we track. The payback of 0.5 years, faster than 99% of tracked peers, reinforces the same point: this is a small, exceptionally high-returning development. The after-tax NPV of C$965M is roughly 0.2x the company’s US$3.18B market cap, which cuts both ways. On one hand, the market is not assigning much value to this specific asset within a 12-project portfolio. On the other, a mid-cap with this balance sheet can absorb a C$254M capex bill without breaking a sweat, making funding risk the least of the concerns here.
The interrogation begins with the study stage. This is a PEA, scoping-level work where capital estimates carry a plus or minus 50% band and resources may be inferred. The 82.7% IRR is a preliminary screen, not a bankable promise. The second question is scale and mine life: the inputs do not tell us how long the mine runs or what the annual production rate is, and for a project this cheap, the returns are often driven by a short, high-grade pulse rather than a long-duration operation. Grade risk in the Athabasca Basin is real, though the jurisdiction itself is a quality signal, mining-friendly and stable.
The study assumes US$80/lb U3O8, and with no live price to compare against, the sensitivity is what it is: a base case that may prove conservative or optimistic depending on where the uranium market actually lands. The 8% discount rate is a reporting convention, not an investment hurdle, and clearing it says nothing. The decisive question is whether the PEA’s grade and tonnage assumptions survive infill drilling. If they do, the economics are genuinely exceptional. If they soften, the payback and IRR compress quickly, because there is no production scale to fall back on. This is a high-upside, high-uncertainty screen, and the next study stage will tell you which side of that ledger it belongs on.
Our take, benchmarked against the project economics in the Mining Stocks database. Figures are estimates drawn from company technical reports — not investment advice; always verify against the source filing.