Donlin Gold PFS: $5.06B NPV, 10.3% IRR
NOVAGOLD Resources Inc.'s Donlin Gold in Alaska, USA has a Pre-Feasibility Study (PFS) outlining an after-tax NPV of $5.06B, an after-tax IRR of 10.3%, and initial capital of $9.23B. The mine plan runs 27 years at about 29.5 Moz Au (total LOM recovered) per year.
NOVAGOLD Resources Inc.'s Donlin Gold has reported Pre-Feasibility Study (PFS) results for the gold project in Alaska, USA. The study headlines an after-tax net present value of $5.06B at a 5% discount rate. It reflects NOVAGOLD Resources Inc.'s (NG.TO) latest disclosed economics for the asset.
Economics. The after-tax NPV is $5.06B using a 5% discount rate. After-tax IRR is 10.3%. Initial capital expenditure is estimated at $9.23B, with life-of-mine sustaining capital of $2.33B. The study models a payback period of 6.5 years. Economics are based on Gold Price (Cash Flow) $2,100/oz.
Production and mine plan. The project envisions an open-pit operation. Life of mine is 27 years. Average annual production is approximately 29.5 Moz Au (total LOM recovered). Metallurgical recovery averages 90%. The open-pit strip ratio is 6.5.
Resources and ownership. The company holds a 60% interest in the project. Royalties and streams: Calista Lease NSR 1.5% for first five years following commercial production or until initial capital payback, then 4.5% NSR after; net proceeds royalty 8%; TKC SUA milled tonnage fee $0.40/t for first 10 years then $0.50/t after; net proceeds payment 3%.
These figures are extracted from NOVAGOLD Resources Inc.'s technical disclosures and reflect the most recent PFS 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.
Our Analysis
- IRR after-tax
- 10.3%
higher than 0% of 98 projects we track
- NPV after-tax
- $5.06B
higher than 99% of 124 projects we track
- Initial capex
- $9.23B
183% of NPV
costlier than 100% of 121 projects we track
- Payback
- 6.5yrs
slower than 100% of 75 projects we track
- Mine life
- 27yrs
- Discount rate
- 5%
- Study price assumption
- Gold Price (Cash Flow) $2,100/oz
- Spot gold today
- $4,139.10/oz
The viability question here is not academic. At a 10.3% after-tax IRR, this project falls short of the roughly 15% threshold developers typically need to secure project finance, and it ranks in the bottom quartile against the 98 gold projects we track. The 27-year mine life suggests a durable, long-lived asset, but durability does not solve the immediate problem: at current study assumptions, the economics do not justify the capital outlay. The question is not whether the orebody works, it is whether the financing math can be made to work.
The gap between the NPV and the build cost tells the real story. The after-tax NPV of $5.06B ranks in the top 1% of tracked projects, yet the $9.23B initial capex is 183% of that NPV and roughly 3.4x the company's entire US$2.71B market cap. A mid-cap cannot quietly finance a build several times its equity value; this will require a partner, a streaming deal, or a fundamental re-scoping of the project. The 6.5-year payback, which ranks at the bottom of the 75 projects we track, only reinforces how long investors would wait for their capital to return.
There is a path forward, and it runs through the price deck. The study assumes $2,100/oz gold, while the current spot sits at $4,139.10/oz. That gap is enormous, and it suggests the returns are likely understated at today's prices rather than overstated. But a PFS carries a plus or minus 25% band, and the 5% discount rate flatters the headline NPV. The single question that decides this project: can the company convert that spot-price tailwind into a financing structure that bridges the chasm between a $9.23B build and a $2.71B market cap?
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.