Amirreza Angaji: Oil price shocks and supply shocks in the global energy market have been recognized for over five decades as one of the main driving factors of economic recessions in the United States. However, developments in the energy market over the past two decades and the emergence of the shale oil and gas revolution have fundamentally altered the structure of these relationships.
NBER Research and Economic Changes in the United States
The research paper by the National Bureau of Economic Research (NBER) titled "From Importer to Exporter: Oil Shocks and the U.S. Economy" by Diego Comin, James Stock, and Luca Zanotti places this structural transformation at the center of economic analysis. The authors present an empirical framework demonstrating how the United States' transition from the largest net oil importer to a net energy exporter has completely reversed the channels through which oil price shocks affect the macroeconomy.
This research is based on the assumption that the U.S. economy's response to oil supply shocks is no longer uniform as it was in the 1970s or 1990s. The transformation from an oil importer to an exporter in recent years has redefined the response patterns of macroeconomic indicators such as GDP, industrial production, employment, and investment.
No Economic Recession Against Oil Shocks
The main issue of the research lies in the fact that why, during the sharp rise in oil prices following Russia's invasion of Ukraine in 2022, the U.S. economy did not experience any recession contrary to traditional predictions. The authors demonstrate that the answer to this puzzle lies in the new effects of the terms of trade, which have transformed the U.S. economy from being purely vulnerable to a relative beneficiary during oil price surges.
To measure the precise effects of oil shocks and distinguish them from other macroeconomic shocks, the authors employed a structural vector autoregression method with auxiliary variables. Accurately identifying oil supply shocks has always been one of the main challenges in macroeconomics. This approach ensures that price changes are entirely exogenous and free from the effects of changes in global aggregate demand or public expectations.
The empirical results obtained in the paper clearly illustrate the sharp break between the pre-shale revolution period (before 2010) and the post-revolution period (especially after 2019). In the pre-2010 period, a negative oil supply shock that led to a 10% increase in crude oil prices would typically result in a decline of about 0.5 to 1% in GDP and a significant decrease in industrial production and total employment in the United States within four to eight quarters.
However, in the current situation where the United States is a net oil exporter, the same oil price shock not only does not cause any decline in GDP or industrial production but also results in a neutral to slightly positive (mildly expansionary) GDP response.
The authors also show that the response of total investment in the U.S. economy to oil shocks has completely transformed. In the past, rising oil prices led to a collapse in investment across all economic sectors; however, in the current period, a heavy surge in investment in extraction, drilling, and energy infrastructure not only compensates for the decline in investment in other sectors but also elevates the overall level of gross domestic investment.
The NBER paper tests five potential economic channels to explain why this macro behavior has changed. The tests conducted indicate that the main driver of this transformation is the change in "terms of trade" and "overall income and wealth effects." As the U.S. becomes a net exporter, the surge in oil prices signifies an improvement in the U.S. terms of trade, which leads to a transfer of wealth into the U.S. economy.
