$7 Billion! World’s Largest Miner’s Potash Project Faces Massive Cost Overrun

70亿美元!全球最大矿企钾肥项目严重超支
Published on: Jul 19, 2025
Author: Amy Liu

BHP, the world’s largest listed mining company, recently announced that the first phase of its Jansen potash project in Saskatchewan, Canada, will cost 30% more than originally planned, with estimated expenditures between $7 billion and $7.4 billion—far exceeding the initial budget of $5.7 billion. Additionally, the first production will be delayed until 2027, a year later than scheduled.

BHP attributed the cost overruns and delays to “design and scope changes,” inflationary pressures, and declining productivity. The company also revealed that the second phase, originally set for 2029, will now begin in 2031. It has paused the $4.9 billion Phase 2 investment plan and withdrawn cost estimates for further review. BMO analyst Alexander Pearce noted that delaying the second-phase expansion could help support potash prices but may also increase total capital expenditure pressure.

BHP stated that the adjustments were based on expectations of “potential increases in potash supply” in the mid-term market and a review of the company’s capital project priorities. Potash is a key component of crop nutrients, and the company remains bullish on long-term demand growth, citing global population expansion and rising agricultural productivity needs as key market drivers.

The Jansen potash project has been years in the making. BHP first secured mining rights in Saskatchewan in 2006 under then-CEO Chip Goodyear. Since then, the company has repeatedly advanced its potash ambitions, including Marius Kloppers’ failed $38.6 billion bid for Nutrien in 2010 and Andrew Mackenzie’s $2.6 billion early-stage investment in Jansen. In 2021, current CEO Mike Henry officially approved the $5.7 billion Phase 1 funding.

This budget overrun and delay are not unique in the industry. BHP has faced similar challenges outside Australia, such as the $670 million cost overrun during the Spence copper mine upgrade in Chile. The Jansen delays once again highlight the widespread difficulties in cost control and timeline management for large-scale mining projects.

Copper Iron Mining Potash Fertilizer