El Niño affects energy markets through at least three major channels: changes in rainfall patterns that impact hydroelectric power generation, heatwaves and droughts that drive agricultural prices higher and boost biofuel demand, and extreme weather events that disrupt the production and transportation of coal and natural gas.

When these climate-driven supply shocks collide with an energy market already strained by geopolitical tensions, history has repeatedly shown one outcome: sharp price increases. This article reviews how the major El Niño events of 1982–1983, 1997–1998, and 2015–2016 affected energy markets and examines what may make the current cycle different.

1982–1983: The "El Niño of the Century" and the Aftershocks of the Second Oil Crisis

The 1982–1983 El Niño was classified by the World Meteorological Organization as the strongest El Niño event of the 20th century. Exceptionally high sea surface temperatures in the eastern equatorial Pacific triggered widespread extreme weather across the globe.

Africa experienced severe droughts and famine. Australia suffered devastating drought conditions and widespread wildfires. In the United States, extreme heat significantly reduced agricultural output across large portions of the Midwest.

At the same time, global oil markets were still recovering from supply disruptions caused by the 1979 Iranian Revolution. The outbreak of the Iran-Iraq War in 1980 further reduced Middle Eastern oil export capacity.

El Niño-driven drought conditions in Australia directly disrupted coal production and transportation in one of the world's most important coal-exporting nations. At the time, Australia's share of global coal trade was even more significant than it is today.

The result was a broad surge in commodity prices. International palm oil prices climbed more than 65% between August 1982 and March 1983, while tropical commodities such as natural rubber rose over 30% between July 1982 and February 1983.

According to monthly data from the U.S. Energy Information Administration, U.S. industrial natural gas prices increased 21.8% over the twelve months from August 1982 to August 1983, rising from $2.89 to $3.52 per thousand cubic feet. Gasoline prices increased by approximately 15% during the same period.

The defining characteristic of the 1982–1983 cycle was that climate-induced agricultural shortages and geopolitically driven energy shortages occurred simultaneously. Their combined impact transformed inflation from a regional concern into a global challenge.

1997–1998: The Energy Inflation Paradox During the Asian Financial Crisis

The 1997–1998 El Niño remains one of the strongest events ever recorded, with sea surface temperature anomalies peaking at 2.4°C.

Indonesia and Malaysia experienced some of the most severe droughts in decades. Massive forest fires blanketed Southeast Asia with haze, causing significant damage to palm oil and rubber plantations.

What made this episode unique was its overlap with the 1997 Asian Financial Crisis.

On one hand, El Niño-driven crop failures pushed commodity prices higher. On the other hand, the financial crisis severely weakened demand across emerging markets. Supply-side shortages and collapsing demand created a rare economic confrontation.

Yet even amid a sharp decline in economic activity, climate-related supply disruptions proved stronger than weakening demand.

Malaysian palm oil futures surged more than 130% between August 1997 and March 1998, driving a broad increase in global vegetable oil prices.

U.S. natural gas prices rose approximately 33% between August 1997 and February 1998 as heatwaves across the southern United States boosted electricity demand for cooling, while abnormal rainfall patterns reduced hydroelectric generation.

The key lesson from the 1997–1998 cycle is that even during major macroeconomic downturns, severe climate-driven supply contractions can independently trigger substantial increases in food and energy prices.

Weaker demand may reduce the magnitude of price gains, but it does not necessarily prevent prices from rising.

2015–2016: The Vulnerability of Clean Energy During Extreme Weather

The 2015–2016 super El Niño was the most recent major event and remains one of the most extensively studied.

The episode brought severe drought conditions to India, widespread agricultural losses across Southeast Asia, and the worst water shortages in decades in northeastern Brazil.

Brazil's experience is particularly relevant to current market concerns.

As a country where hydroelectric power accounted for more than 60% of electricity generation, Brazil suffered a sharp decline in rainfall during the 2015–2016 El Niño. Reservoir levels fell significantly, reducing hydroelectric output.

To compensate for electricity shortages, Brazil increased reliance on natural gas and coal-fired generation. This directly boosted natural gas import demand and contributed to upward pressure on global energy prices.

India faced similar challenges. Reduced hydroelectric generation caused by drought forced the country to increase coal imports.

At the same time, severe drought conditions in eastern Australia reduced coal export capacity, helping global thermal coal prices rebound more than 60% from their lows during 2016.

China also experienced substantial disruptions.

The 2015–2016 El Niño produced a pattern of flooding in southern China and drought in northern regions. Severe flooding along the Yangtze River basin affected power generation efficiency, while extreme summer temperatures pushed electricity demand for air conditioning sharply higher.

China's coal prices rose more than 70% throughout 2016.

This cycle highlighted a critical reality: renewable energy sources such as hydropower and wind power remain highly vulnerable to extreme climate events. When power shortages emerge, fossil fuels continue to serve as the ultimate backup source of energy security.

Assessing the Current Situation

The current environment is arguably more complex than during previous major El Niño episodes.

First, Middle Eastern oil supplies remain under pressure. Shipping through the Strait of Hormuz has not fully returned to pre-conflict levels, while Brent crude continues to trade near $100 per barrel.

Should El Niño-related weather patterns increase summer energy demand, elevated oil prices could transmit inflationary pressures more rapidly across the global economy.

Second, global grain inventories are near their lowest levels in two decades.

U.S. corn stockpiles have declined for three consecutive years, while palm oil inventories across Southeast Asia remain relatively tight.

Historical experience suggests that any unexpected reduction in grain production can create a secondary inflation effect through biofuel production and animal feed markets, ultimately feeding back into energy prices.

Third, the global energy mix is substantially different from that of previous major El Niño periods.

As of 2026, hydropower, wind, and solar energy account for more than 35% of China's electricity generation. In Brazil, hydropower still represents more than 60% of total power output.

The experience of 2015–2016 demonstrated that clean energy systems can become particularly vulnerable during extreme weather events. Excessive rainfall may overwhelm reservoir management systems, while drought can leave reservoirs depleted. Wind power generation is also highly dependent on weather conditions.

When renewable energy sources fail to provide stable output during periods of climate stress, coal and natural gas often remain the final balancing mechanism for power grids.

Market Analysis:

The combination of a potentially strong El Niño event and ongoing geopolitical supply risks presents a unique challenge for global markets. Unlike previous cycles, today's economy is more dependent on renewable energy while simultaneously facing tighter grain inventories and elevated energy prices.

If weather disruptions intensify during the second half of 2026, investors may need to prepare for renewed volatility across energy, agricultural commodities, inflation-sensitive assets, and global interest-rate expectations. History suggests that when climate shocks and supply disruptions occur simultaneously, the resulting impact on commodity prices can be both significant and long-lasting.