Strategic petroleum reserves: Why India needs bigger oil buffers & how others compare | Cut The Clutter

With the Strait of Hormuz blockade entering its 50th day (as of the article's context), global attention has turned to the adequacy of countries' strategic p...

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With the Strait of Hormuz blockade entering its 50th day (as of the article's context), global attention has turned to the adequacy of countries' strategic petroleum reserves (SPRs) as a buffer against oil supply disruptions.
India's strategic petroleum reserve, managed by Indian Strategic Petroleum Reserves Limited (ISPRL), holds approximately 3.37 million metric tonnes (MMT) of crude — about 64% of its 5.33 MMT total storage capacity — equivalent to roughly 9.5 days of crude oil requirement.
When commercial stocks held by refineries, ports, and pipelines are included, India's total petroleum storage reaches approximately 74 days — still below the international benchmark of 90 days.
India remains highly vulnerable to Hormuz disruptions: roughly 35–50% of crude oil imports transit this strait, and approximately 90% of LPG imports and 42% of LNG imports are routed through it.
A comparative review shows India's SPR far below those of China (1.4 billion barrels), the United States (413 million barrels), and Japan (263 million barrels).
India is expanding capacity through Phase-2 facilities at Chandikhol (Odisha, 4 MMT) and Padur extension (Karnataka, 2.5 MMT) under a Public Private Partnership (PPP) model.

Static Topic Bridges

Strategic Petroleum Reserves (SPR): Concept and Purpose

Strategic Petroleum Reserves are government-held emergency stockpiles of crude oil and/or petroleum products maintained to ensure energy security against sudden supply disruptions — caused by geopolitical crises, natural disasters, infrastructure failures, or deliberate blockades. The concept emerged globally after the 1973 Arab Oil Embargo, when OPEC nations cut oil supplies to the US and other Western supporters of Israel, causing severe energy shocks. The International Energy Agency (IEA) was founded in 1974 specifically to coordinate energy security responses among oil-importing nations and mandates its 32 member countries to maintain at least 90 days of net oil import cover as SPR.

IEA founded: November 1974, following the 1973 oil crisis
IEA membership: 32 countries (OECD member states)
IEA SPR requirement: 90 days of net oil import cover for all member states
India's status with IEA: Associate member (not full member); India joined as Associate in 2017
India uses the IEA 90-day standard as an aspirational planning benchmark
SPR types: Underground rock caverns (preferred — lower cost, better security), above-ground tanks, salt caverns

Connection to this news: India's SPR of ~9.5 days (strategic reserves alone) and ~74 days (total including commercial) falls short of the IEA's 90-day benchmark, creating a structural vulnerability that a Hormuz disruption directly exposes.

Indian Strategic Petroleum Reserves Limited (ISPRL) and Phase-1 Facilities

India initiated its SPR programme in 2004. ISPRL — a Special Purpose Vehicle under the Ministry of Petroleum and Natural Gas — was tasked with building and managing underground cavern storage facilities. Phase-1 consists of three underground rock cavern facilities, all commissioned by 2014 with storage becoming operational from around 2019.

ISPRL formed: 2004 (programme initiation)
ISPRL legal status: Special Purpose Vehicle (SPV) under Ministry of Petroleum and Natural Gas
Phase-1 facilities and capacities:
Visakhapatnam (Andhra Pradesh): 1.33 MMT
Mangaluru/Mangalore (Karnataka): 1.5 MMT
Padur (Karnataka): 2.5 MMT
Total Phase-1 capacity: 5.33 MMT
Current stock: ~3.37 MMT (64% capacity utilisation, as of early 2026)
Equivalent days coverage (strategic only): ~9.5 days of crude oil consumption
Phase-1 storage method: Underground rock caverns (more cost-efficient and secure than above-ground tanks)
ADNOC (Abu Dhabi National Oil Company) has a crude storage agreement at Padur — commercial partner using spare capacity

Connection to this news: Phase-1 alone is insufficient given India's import scale and Hormuz exposure. The Hormuz blockade context directly validates the urgency of Phase-2 expansion.

Phase-2 Expansion and Commercial-cum-Strategic Model

The Union Cabinet approved Phase-2 expansion in July 2021. Unlike Phase-1 (fully government-funded), Phase-2 uses a Public-Private Partnership (PPP) model where private entities co-invest in storage infrastructure and commercial use of spare capacity is permitted to generate revenue, reducing the government's cost burden.

Phase-2 approval: July 2021 (Union Cabinet)
Phase-2 sites and capacities:
Chandikhol, Odisha: 4 MMT (underground cavern)
Padur extension, Karnataka: 2.5 MMT
Total Phase-2 capacity to be added: 6.5 MMT
Additional planned facilities: Salt cavern storage in Rajasthan; above-ground storage at Bina (Madhya Pradesh) and Mangaluru
Model: Commercial-cum-Strategic (private developers build and operate; government holds strategic access rights)
Upon Phase-2 completion, India's total SPR capacity will reach approximately 11.83 MMT

Connection to this news: Phase-2 completion is critical to move India toward the 90-day benchmark. The Hormuz disruption scenario underlines the urgency of accelerating this expansion.

Strait of Hormuz: The World's Most Critical Oil Chokepoint

The Strait of Hormuz is a narrow maritime passage connecting the Persian Gulf to the Gulf of Oman, lying between Iran (north) and Oman and UAE (south). At its narrowest, it is approximately 33 km wide. It is the world's most important oil chokepoint: in 2024, approximately 20 million barrels per day (b/d) passed through it — equivalent to about 20% of global petroleum liquids consumption. Closure or disruption of the strait would be a severe blow to Asian oil importers, with India, China, Japan, and South Korea most exposed. Iran has periodically threatened to "close" the strait as a geopolitical lever.

Location: Between Iran (north) and Oman/UAE (south); narrowest point ~33 km
2024 oil flow: ~20 million barrels/day (~20% of global petroleum liquids)
India's Hormuz dependence: ~35–50% of crude oil imports; ~90% of LPG imports; ~42% of LNG (primarily from Qatar)
India's crude import diversification: Imports from ~40 countries as of March 2026; ~70% of imports via non-Hormuz routes
Other major oil chokepoints: Strait of Malacca (SE Asia), Suez Canal (Egypt), Bab-el-Mandeb (Yemen/Djibouti), Cape of Good Hope (South Africa — bypass route)
India's 2025–26 crude consumption: approximately 5.5 million barrels/day

Connection to this news: The ongoing Hormuz blockade (50+ days in the article's context) is a direct test of India's SPR adequacy — and highlights the strategic logic behind expanding reserves and diversifying import sources.

Global SPR Comparison

The global SPR landscape reveals India's relative position among major oil-importing nations:

China: ~1.4 billion barrels (largest SPR globally)
United States: ~413 million barrels (US Strategic Petroleum Reserve — established under Energy Policy and Conservation Act, 1975; stored in underground salt caverns in Texas and Louisiana)
Japan: ~263 million barrels (IEA member; holds both government and industry-mandated reserves)
OECD Europe (combined): ~179 million barrels
South Korea: ~79 million barrels
India (ISPRL strategic only): ~24.7 million barrels (equivalent to ~3.37 MMT)
IEA 90-day benchmark: India's SPR-alone figure falls far short; inclusive of all commercial stocks, India reaches ~74 days

Connection to this news: The comparison underscores India's structural gap relative to peer economies — particularly China, whose massive SPR insulates it far more effectively from Hormuz disruptions.

Key Facts & Data

ISPRL formed: 2004; under Ministry of Petroleum and Natural Gas
Phase-1 facilities: Visakhapatnam (1.33 MMT), Mangaluru (1.5 MMT), Padur (2.5 MMT) — total 5.33 MMT
Current stock: ~3.37 MMT (64% of capacity)
Days coverage — SPR only: ~9.5 days; including commercial stocks: ~74 days
IEA 90-day SPR benchmark: India is an IEA Associate Member (joined 2017), not full member
Phase-2 expansion approved: July 2021; additional 6.5 MMT at Chandikhol (4 MMT) and Padur extension (2.5 MMT)
Strait of Hormuz: ~20 million barrels/day (2024); ~20% of global petroleum liquids
India's LPG Hormuz dependence: ~90% of LPG imports transit Hormuz
India's LNG Hormuz dependence: ~42% (primarily Qatar)
China SPR: ~1.4 billion barrels; USA: ~413 million barrels; Japan: ~263 million barrels
IEA founded: 1974 (post-1973 Arab Oil Embargo); 32 OECD member states
US Energy Policy and Conservation Act (establishing US SPR): 1975