The shale revolution and a turning point for US exceptionalism?
FEW EVENTS IN MODERN ECONOMIC HISTORY HAVE CHANGED THE FORTUNES OF A SINGLE NATION AS PROFOUNDLY AS THE AMERICAN SHALE OIL REVOLUTION.
The breakthrough reshaped the global energy order and in turn helped US asset markets become the envy of the world. But shale production may now have topped out, and the economic consequences of the peak may reach far beyond the Permian basin.
OLIVER SHALE
Investment Specialist, US Ruffer LLC registered representative
THE WEEKLY GOOGLE OF MY NAME – OLI SHALE – ALWAYS FLAGS THE SAME ERROR RECOMMENDATION: ‘DID YOU MEAN SHALE OIL?’
While my lack of internet footprint stings, it’s not surprising. After all, I’m competing with one of the most important economic events of the 21st century.
Since energy underpins all economic activity, access to a cheap, domestic source places a nation at a strategic advantage. This is exactly what the shale oil revolution did for America.
BREAKTHROUGH TECHNOLOGY
Shale is an abundant, sedimentary rock that forms in tightly compacted layers. Certain shale formations contain deposits of hydrocarbons, trapped in pores within the impermeable rock. These hydrocarbons, though plentiful, are harder to extract than conventional oil and gas, which sit in easily tapped underground reservoirs. So, for decades, shale was inaccessible to the industry.
In the early 2000s, the new technology of hydraulic fracturing (fracking), pioneered by Mitchell Energy & Development and then combined with horizontal drilling, made it commercially viable for US producers to extract these vast reserves of oil and natural gas.
Fracking involves injecting large amounts of water, sand and chemicals at high pressure into horizontal wells drilled through tight rock layers. The process forces fracturing in the rock, creating gaps through which the trapped hydrocarbons can flow.
Mitchell Energy’s focus was on natural gas extraction from the Barnett Shale in Texas, but the economic potential was quickly seized on more broadly. Entrepreneurial energy companies, buoyed by high oil prices through the 2000s and a steady supply of cheap credit, rapidly expanded their drilling programmes. Soon they were applying the new method to oil plays like the Bakken Formation, the Eagle Ford Group and, most importantly, the Permian Basin.
DRILL, BABY, DRILL
For an industry then battling with the prospect of peak reserves, shale was revolutionary.
US crude oil output had been falling steadily since the 1970s, from over 9 million barrels per day (bpd) to around 5 million by the mid-2000s. At that time, lacklustre supply growth from non-OPEC producers was meeting rampant demand from China. The result: prices rose by over 500% through the 2000s.
Then came shale. Between 2010 and 2020, US shale fields added over 7 million bpd of oil production (Figure 1). This was a game changer for non-OPEC oil supply. For a decade, almost all the additional barrels brought onto the global energy market came from US shale plays. By late 2019, American production reached nearly 13 million bpd, around 13% of total global production.
The revolution wasn’t just in oil. Shale gas transformed the US into the largest natural gas producer in the world, tilting the North American market away from an acute shortage and into structural surplus. The benefit was clear, with domestic gas prices trading at an average discount to global benchmarks of over 50% during the 2010s.
FUELLING US EXCEPTIONALISM
This surge in output had three broad but intertwined effects that shaped the financial environment for a decade.
Firstly, it profoundly altered the global energy balance. As domestic production soared, the US was transformed from a declining petroleum producer, reliant on imports of foreign oil, to a net energy exporter by 2019 (Figure 2). This steadily improved the country’s energy trade balance and terms of trade, freeing up dollars to be spent elsewhere. It reduced US dependence on overseas petrostates and afforded it greater freedom in conducting foreign policy. What might the geopolitical balance look like today if America still relied heavily on other nations for its energy supply?
Second was the disinflationary impact on the US economy. Businesses enjoyed structurally cheaper energy (particularly via domestic natural gas), while downward pressure on global oil prices saved consumers money at the pump. This kept inflation lower than it otherwise would have been, as the weight of energy prices in the Consumer Price Index (CPI) collapsed (Figure 3). In a goldilocks environment of low and stable inflation with robust economic growth, monetary policy could be kept accommodative, supporting asset prices.
“The disinflationary engine of cheap energy and steady central bank liquidity was a boon for financial asset valuations.”
Thirdly, in combination with these forces, the revolution contributed to a shift in the correlation between crude oil prices and the US dollar (Figure 4). For most of the new millennium, this had been definitively negative: when oil prices rose, the dollar tended to weaken. As the US moved towards energy independence, the previous correlation broke down: higher oil prices now increasingly benefited US manufacturers and improved the US terms of trade, generally supporting a stronger currency. Greater diplomatic leverage and geopolitical influence further helped underpin the US dollar’s status as the world’s primary reserve currency.
Superior corporate profits, robust consumption and steady economic growth helped usher in a sustained era of US exceptionalism. The disinflationary engine of cheap energy and steady central bank liquidity was a boon for financial asset valuations. US outperformance and a strong currency attracted huge capital inflows from around the world. In a hyperfinancial economy, this created powerful feedback loops: steady capital inflows, seeking yield and a strong currency, propped up asset prices, which in turn drove economic activity, thereby justifying ever higher valuations. Cheap energy was a key underpinning of this, and US asset markets and the dollar were the beneficiaries.
PEAK SHALE?
All revolutions eventually run out of gas, and shale’s best days may now be behind it. Total US crude oil production remains at record highs, but the rate of growth has collapsed.
During the boom, companies chased growth at any cost, acquiring land and drilling aggressively. This was often funded by debt; the spoils didn’t necessarily pass to shareholders.
To consistently expand output, the most productive parts within major basins (so-called tier 1 acreage) were drilled first, a process known as high grading. After a decade of relentless drilling, these are becoming depleted. Today, new wells are often in less productive areas, and overall output is plateauing in some large plays like the Bakken and Eagle Ford (Figure 5).
“As US shale production slows, we should expect more volatility in energy markets, inflation and financial asset valuations.”
As breakeven costs rose, the debt-fuelled model of growth became unsustainable. When oil prices collapsed in late 2014 and again during the covid-19 shock, many high cost producers failed. Survivors shifted to a more disciplined model, cutting rig counts and returning cash to shareholders.
While the Trump administration wants American producers to ‘drill, baby, drill’, the economic and geological realities are more restrictive. Future growth in shale supply is likely to be slower, more costly and less transformative than over the past decade. Producers like Diamondback Energy have already begun sounding the alarm. In May 2025, the company noted fracking crews were down 15% year to date and that US onshore production had likely peaked. 1
We’ve seen this pattern before – notably, with conventional oil in the US during the 1960s or in the North Sea during the early 2000s. When large new sources of supply have peaked, it has set the stage for sustained bull markets in oil. If higher energy prices today lift inflation and weigh on corporate margins, the tailwind that has benefited US asset valuations could soon turn into a headwind.
THE NEXT DECADE
If shale production has indeed peaked, the consequences for global geopolitics and markets will be far-reaching. For a decade, US shale has been the world’s marginal producer, keeping a lid on global energy prices. As US shale production slows, we should expect more volatility in energy markets, inflation and financial asset valuations.
Meanwhile, the industries of the future, powered by artificial intelligence, are set to be extremely energy intensive. Having the lowest cost of energy would provide a key structural advantage to whoever can acquire it. And it’s no longer clear where this advantage might lie.
At a time when the US is running a budget deficit double that of the 2010s, a reversal of its new-found energy independence would place pressure on both the trade balance and the current account. Greater reliance on foreign oil could also reduce the US’s geopolitical leverage and usher back a world where the dollar is vulnerable to higher oil prices.
Previous Reviews have discussed the risks to unparalleled US exceptionalism in asset markets. Energy markets are deeply intertwined with monetary and financial regimes. And, in shale oil, one of the hidden drivers of dollar dominance, low inflation and high asset prices may now be fracturing. ⬤
1 Letter to stockholders from Diamondback Energy, 5 May 2025
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