Oil sanctions have given rise to dark shipping, reshaping global energy flows and producing far-reaching economic consequences.

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In recent years, oil export sanctions have become a central tool of U.S. foreign policy, targeting major producers including Russia, Iran, and, until very recently Venezuela. These sanctions were designed to limit oil revenues, apply economic pressure, and create geopolitical leverage. But their real-world effects have proven more complex than many anticipated.

A growing “shadow fleet” of oil tankers now operates alongside the conventional global shipping system. These vessels, often older and operating with opaque ownership and shifting registrations, transport sanctioned oil through networks designed to evade restrictions. Despite extensive sanctions, large volumes of this oil continue to reach global markets. 

In this episode, Penn economist Jesús Fernández-Villaverde examines how oil sanctions have contributed to the rise of dark shipping, and have become a lever in global great power competition. Drawing on new research funded by the Kleinman Center, he explains how shadow oil flows reshape global markets, influence prices and industrial activity, and generate unintended outcomes.

Jesús Fernández-Villaverde is a professor of economics and Director of the Penn Initiative for the Study of Markets at the University of Pennsylvania.

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Energy Policy Now is produced by The Kleinman Center for Energy Policy at the University of Pennsylvania. For all things energy policy, visit kleinmanenergy.upenn.edu.

Oil sanctions have given rise to dark shipping, reshaping global energy flows and producing far-reaching economic consequences.
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In recent years, oil export sanctions have become a central tool of U.S. foreign policy, targeting major producers including Russia, Iran, and, until very recently Venezuela. These sanctions were designed to limit oil revenues, apply economic pressure, and create geopolitical leverage. But their real-world effects have proven more complex than many anticipated.
A growing &ldquo;shadow fleet&rdquo; of oil tankers now operates alongside the conventional global shipping system. These vessels, often older and operating with opaque ownership and shifting registrations, transport sanctioned oil through networks designed to evade restrictions. Despite extensive sanctions, large volumes of this oil continue to reach global markets.&nbsp;
In this episode, Penn economist Jes&uacute;s Fern&aacute;ndez-Villaverde examines how oil sanctions have contributed to the rise of dark shipping, and have become a lever in global great power competition. Drawing on new research funded by the Kleinman Center, he explains how shadow oil flows reshape global markets, influence prices and industrial activity, and generate unintended outcomes.
Jes&uacute;s Fern&aacute;ndez-Villaverde is a professor of economics and Director of the Penn Initiative for the Study of Markets at the University of Pennsylvania.
Related Content
Boomtowns in the Battery Belt: Risks and Opportunities of Clean Energy Investments in Smalls Towns of America <a href="https://kleinmanenergy.upenn.edu/research/publications/boomtowns-in-the-battery-belt-risks-and-opportunities-of-clean-energy-investments-in-small-towns-of-america/">https://kleinmanenergy.upenn.edu/research/publications/boomtowns-in-the-battery-belt-risks-and-opportunities-of-clean-energy-investments-in-small-towns-of-america/</a>
Energy System Planning: New Models for Accelerating Decarbonization <a href="https://kleinmanenergy.upenn.edu/research/publications/energy-system-planning-new-models-for-accelerating-decarbonization/">https://kleinmanenergy.upenn.edu/research/publications/energy-system-planning-new-models-for-accelerating-decarbonization/</a>
Energy Policy Now is produced by The Kleinman Center for Energy Policy at the University of Pennsylvania. For all things energy policy, visit kleinmanenergy.upenn.edu.

Energy Policy Now offers clear talk on the policy issues that define our relationship to energy and its impact on society and the environment. The series is produced by the Kleinman Center for Energy Policy at the University of Pennsylvania and hosted by energy journalist Andy Stone. Join Andy in conversation with leaders from industry, government, and academia as they shed light on today's pressing energy policy debates.

Energy Policy Now

Energy Policy Now offers clear talk on the policy issues that define our relationship to energy and its impact on society and the environment. The series is produced by <a href="https://kleinmanenergy.upenn.edu/podcast/">the Kleinman Center for Energy Policy</a> at the University of Pennsylvania and hosted by energy journalist Andy Stone. Join Andy in conversation with leaders from industry, government, and academia as they shed light on today's pressing energy policy debates.

Oil sanctions have given rise to dark shipping, reshaping global energy flows and producing far-reaching economic consequences.