Fuel supplies are a critical but often overlooked pillar of grid stability. Any disruption in fuel deliveries can directly affect electricity generation and increase the risk of power outages. When the 14th administration began in August 2024, Iran was facing significant pressure from declining liquid-fuel reserves, rising electricity demand and seasonal constraints on natural gas supplies.

Official data from the National Iranian Oil Products Refining and Distribution Company show that measures taken in the following months not only stabilized supplies but also produced unprecedented records in power plant fuel deliveries and storage.

Fuel deliveries top 22b liters

At the start of the 14th administration in September 2024, power plant diesel reserves stood at 1.81 billion liters, down 43% from 3.174 billion liters recorded in September 2023.

Despite the depleted stocks, fuel deliveries to power plants accelerated during 1403 (2024). Total deliveries of liquid fuel exceeded 22 billion liters, more than 40% higher than in 1402 (2023), representing an increase of more than 6 billion liters.

The figure marked the highest volume of power plant fuel deliveries in the 97-year history of the National Iranian Oil Products Distribution Company, according to official data.

Diesel deliveries rise 37%

Fuel distribution reached a record on Feb. 21, 2025, when power plants received a combined 107 million liters of liquid fuel, including 72 million liters of diesel and 35 million liters of fuel oil.

During the first year of the 14th administration, average daily diesel deliveries to power plants reached 37.4 million liters, an increase of 10 million liters, or 37%, from the comparable period during the final year of the 13th administration.

Fuel oil deliveries also increased by an average of 8.6 million liters per day, or 43%, reaching 28.6 million liters per day during the first year of the 14th administration.

Reserves climb to 3.4b liters

Alongside increased deliveries, authorities focused on rebuilding strategic power plant fuel reserves.

In November 2025, diesel reserves surpassed 3.4 billion liters for the first time. A significant portion of power plant storage facilities and National Iranian Oil Products Distribution Company depots reached full capacity, making further storage dependent on freeing up additional space.

The November 2025 stockpile was 86% higher than the maximum level recorded in 2024 and 6% higher than the previous peak in 2023.

The filling rate of the National Iranian Oil Products Distribution Company’s depots also rose 50% in November 2025 compared with the same period a year earlier.

Winter deliveries hit new highs

Average daily diesel deliveries to power plants reached about 58 million liters in January 2026, up more than 7% from 54 million liters per day in January 2025.

The figure was also 38% higher than the highest average daily delivery recorded during the 13th administration — 42 million liters in December 2022.

Overall, average daily liquid-fuel deliveries to power plants during the cold months of 2025 stood at about 53 million liters. During the final 10 days of December 2025, daily power plant diesel consumption reached 112 million liters. Existing reserves allowed the surge to be managed without disrupting electricity generation.

The latest figures show that useful liquid-fuel reserves for power plants reached 3.4 billion liters on Jan. 19, 2026, more than 1 billion liters above the level recorded on the same date a year earlier.

The figures point to a major strengthening of power plant fuel management under the 14th administration. Despite inheriting depleted reserves, authorities increased deliveries, rebuilt strategic stocks and improved fuel quality, helping the energy system navigate a critical period without disruptions to power generation.

The results represent more than higher fuel deliveries and larger inventories. They point to a broader restructuring of the power plant fuel supply chain and stronger resilience in Iran’s electricity grid.