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How the US shale boom will be felt around the world

J.G. Domke | Bloomberg News | Getty Images

New shale extraction technology is ushering in an era of lower energy costs in the US that will have an impact around the world.

Lower energy costs mean downward pressure on inflation and manufacturing costs, which will mean more money left over for consumption and investment in the US and overseas. Policymakers and investors who dismiss technologies like shale extraction as niche developments need to consider their longer-term implications.

(Read more: US shale revolution leaving Europe in the cold)

Extracting oil and gas from shale rock through hydraulic fracturing or fracking has already transformed the US energy landscape. Along with enhanced energy storage and innovations in alternative energy, shale extraction is holding energy costs down. The strong shale supply has helped keep US West Texas Intermediate oil prices lower than non-US Brent prices since late 2010, according to the US Energy Information Administration. Since 2004, WTI had typically traded at a premium of $1 to $3 a barrel.

The impact of lower energy costs on US economic growth is not some one-off that has already been fully priced into the equity market. Over the longer term, the multiplier effects could be even greater. Lower energy costs mean US manufacturing becomes cheaper and the US becomes more attractive as an investment destination. This will become an even more significant factor if US non-financial corporations invest even a fraction of their vast $1.8 trillion cash reserves and start employing more US workers. Higher employment also means higher consumption and potentially more employment. Shale can contribute to a virtuous circle of self-reinforcing recovery in the US.

(Read more: Shale boom may create jobs in nonfracking states: Report)

Overall, we estimate that shale could add 0.5 percentage points a year to US gross domestic product (GDP) growth over the next 10 years. Official figures put US annual GDP at $17.1 trillion in the final quarter of 2013, meaning that if the shale boom were to add 0.5 percentage points to GDP in 2014, it would create an $85 billion economy from scratch.

Over the longer term, other technologies could help reinforce shale's positive effect. Additive manufacturing or 3D printing could save more than half of US manufacturers' energy use, according to the US Department of Energy. The combination of rapid manufacturing innovation and low energy costs were key factors in America's industrial revolution during the 19th century and could hold similar promise in the 21st.

The benefits and impact of US shale production will spread globally. If cross-border agreements allow shale technology to be deployed more widely abroad, the global economic effects could be even more pronounced. Russia, for instance, has even more recoverable shale oil resources than the US, or 75 billion barrels compared with 58 billion, according to US Energy Information Administration. China has almost twice the US's recoverable shale gas reserves, with 1.1 trillion cubic feet compared with 665 trillion. Countries that can exploit their reserves sustainably in coming years may reap considerable economic gains.

(Read more: Shale gas's next frontier could be Poland)

Inevitably, the shale boom entails risks. Energy companies or energy producing nations that fail to adapt to it could falter. A major accident or environmental incident caused by shale extraction could provoke a political backlash against the technique. If recoverable reserves prove to be lower than estimated or more expensive to extract, that could also hit the expected supply of shale energy or push up its anticipated cost. But if policymakers and energy producers can minimize shale's pitfalls, investors will enjoy its rewards for many years to come.

Mark Haefele is Global Head of Investment at UBS Wealth Management.

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