ConocoPhillips lifts Willow project cost to $9 billion, first oil set for early 2029

David Wethe, Bloomberg November 06, 2025

(Bloomberg) – ConocoPhillips raised its total spending plans for the Willow oil and natural gas project in Alaska to as much as $9 billion, citing inflation and other rising costs. 

Image: ConocoPhillips

The Houston oil giant, which initially estimated spending on the North Slope project at $7 billion to $7.5 billion, expects to begin oil production in early 2029, according to a statement on Nov. 6.

General inflationary costs of about $700 million are the biggest driver of the higher range of $8.5 billion to $9 billion.

Shares of ConocoPhillips, which reported third-quarter earnings on Nov. 6 that beat analysts’ estimates, rose 0.8% before the start of regular trading in New York.

ConocoPhillips has operated in Alaska for decades. Now, fitting squarely into President Donald Trump’s push for more domestic oil production, the company is looking to diversify its portfolio as shale basins in Texas age. The Willow project is expected to produce about 600 million barrels of crude over 30 years.

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