Ruffer has warned that slowing US shale oil production could increase energy price volatility, put pressure on inflation and challenge the economic factors that have supported US financial markets.
In its Ruffer Review 2026, investment specialist Oliver Shale examines how the shale revolution transformed the US economy, turning the country from a major energy importer into a net energy exporter by 2019.
Between 2010 and 2020, US shale fields added more than 7 million barrels of oil per day. The resulting increase in supply helped lower energy costs, reduce inflationary pressure and support economic growth.
However, Ruffer believes the sector may be approaching a turning point. The most productive drilling areas have been extensively developed, leaving producers increasingly dependent on less productive reserves. Production growth has slowed, while extraction costs have increased.
Although US crude oil output remains at record levels, Ruffer argues that future supply growth is likely to be slower and more expensive.
The implications extend beyond the energy sector. Lower shale production growth could place upward pressure on oil prices, increasing inflation and affecting corporate profit margins and financial asset valuations.
Ruffer also highlights potential consequences for the US dollar. Cheap domestic energy helped improve the country’s trade balance and reduce reliance on overseas suppliers. A slowdown in production could reverse some of these benefits and increase US exposure to global energy prices.
Growing electricity requirements from artificial intelligence and data centres add another consideration, with access to affordable energy becoming increasingly important for economic competitiveness.
Ruffer Investment Company Limited (LON:RICA) is a British investment company dedicated to investments in internationally listed or quoted equities or equity related securities
