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Iran's Open Data Database: The Islamic Republic's Use of Heavy Fuel Oil Causes 'Environmental and Commercial Damages'

Feb 4, 2026 February 4, 2026 3 min read 📰 VOA Persian
📋 Key Takeaway

Iran is facing significant environmental and commercial challenges due to its reliance on heavy fuel oil, which is being used in power plants amid difficulties in selling it internationally. The government's commitments to international shipping regulations have led to increased air pollution and financial losses. This situation highlights the intertwined nature of Iran's refining and shipping industries and the urgent need for regulatory compliance.

🔍 Quick Context Guide
💡 Bottom Line: Iran's reliance on high-sulfur heavy fuel oil poses serious environmental and economic challenges amid international regulatory pressures.

👥 Key Players

Iranian Government MENTIONED
Regulator and producer of heavy fuel oil
"The government’s policies directly impact environmental health and economic stability in Iran."
International Maritime Organization (IMO) MENTIONED
Regulatory body for maritime fuel standards
"Their regulations influence global fuel markets and Iran's ability to sell its oil."
Environmental Protection Organization of Iran MENTIONED
Agency responsible for environmental health
"They provide crucial data on air pollution and its health impacts in Iran."
U.S. Government MENTIONED
International actor monitoring Iran's oil exports
"U.S. sanctions and regulations affect Iran's oil sales and environmental practices."

📰 What Happened

A study by Iran's Open Data Database revealed that the country's reliance on high-sulfur heavy fuel oil has led to severe air pollution and economic losses. The Iranian government is struggling to comply with international shipping fuel regulations, resulting in environmental and commercial crises.

  • Iran spends over $70 million monthly on importing low-sulfur heavy fuel oil.
  • Air pollution from burning high-sulfur fuel is responsible for an estimated 26,000 deaths annually in Iran.

💡 Why It Matters

🇮🇷 For Iran: The environmental and health impacts of air pollution are significant concerns for public health and economic stability.
🌍 Regional: Increased pollution could lead to regional health crises and impact neighboring countries.
🌐 International: The situation raises concerns about Iran's compliance with international environmental standards and affects global oil markets.

📚 Background

Heavy fuel oil, particularly high-sulfur varieties, is a byproduct of oil refining that has become increasingly problematic due to international regulations aimed at reducing marine pollution.

International Maritime Organization regulations Air pollution and public health in Iran
📡 Source: NEUTRAL
📊 Confidence: 70%
The source presents data-driven insights but may reflect the Iranian government's perspectives on environmental issues.

Iran's Open Data Database has conducted a study on the 'environmental and commercial damages' caused by the use of heavy fuel oil (Mazut) in Iran. According to this website, since December 2020, Iran has faced difficulties in selling heavy fuel oil, leading to its use in power plants, which has resulted in severe air pollution in various cities across the country. The report further states that the Iranian government imports lower-sulfur heavy fuel oil due to commitments to international shipping companies, creating numerous commercial crises. There is a mutual dependency between the refining and shipping industries. The shipping industry relies on heavy fuel oil supply from oil refineries, while refineries depend on the shipping industry to sell petroleum products that are difficult or impossible to sell in other markets. In November 2016, the International Maritime Organization (IMO) approved a reduction of sulfur content for marine fuel from 3.5% to 0.5% by weight to prevent marine pollution, which was implemented in December 2020. This regulation necessitated major changes in refineries worldwide to supply the heavy fuel oil required by the shipping industry with a lower sulfur percentage within a specified timeframe. Consequently, global production of heavy fuel oil, which exceeded 400 million tons in 2018, with nearly 50% used in the shipping industry, gradually decreased, while production of lighter compounds with lower sulfur, such as diesel and jet fuel, increased. However, Iran did not make the necessary investments in this area, resulting in heavy fuel oil that could no longer be sold in global markets due to the same regulation being left unsold, and officials sent this low-quality, high-sulfur heavy fuel oil to thermal power plants. Compared to Brent crude oil, Iranian crude contains high sulfur and is rich in heavy fuel oil (or Mazut), but since December 2020, there has been a limited market for Iranian Mazut, yet Iranian oil refineries continue to produce high-sulfur heavy fuel oil and sell it at a lower price (the price of low-sulfur heavy fuel oil is about 30% higher than that of high-sulfur heavy fuel oil). Experts say that currently, only the Arak oil refinery can produce low-sulfur heavy fuel oil, and only 15,000 tons per month. Meanwhile, the demand for low-sulfur Mazut in Iran is about 1.5 million tons per year (125,000 tons per month). Although the Iranian government does not provide clear statistics in this regard, it is estimated that Iran spends over $70 million monthly (equivalent to $900 million annually) on importing low-sulfur heavy fuel oil while simultaneously causing severe air pollution by burning high-sulfur heavy fuel oil in its power plants. The head of the Environmental Protection Organization admitted that air pollution in Iran kills 26,000 people annually. The ongoing strike of over 2,200 workers in various oil and gas industries in southern Iran continues. The U.S. has warned about the 'environmental dangers' of illegal oil transfers from Iran to Malaysia. Insurance companies opposed paying damages to Chevron due to the seizure of oil cargo by the Iranian government. The production of 'petrochemical gasoline' is on the agenda of President Raisi's government; contaminated fuel with carcinogenic materials is returning to Iran's fuel cycle.

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Translated from the original and edited for English readers. View original source →

Translation confidence: 85%

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