LPG vs LNG and West Asia Crisis: Implications for India’s Energy Security
Table of Contents
Relevance: GS Paper III – Energy Security, Economy, Infrastructure, International Relations
For Prelims:
- LPG, LNG, Propane, Butane, Methane, Cryogenic Temperature, Strait of Hormuz, PNG, CNG, Volume Reduction Ratio
For Mains:
- Energy Security, Import Dependence, Supply Chain Vulnerability, Geopolitical Risk, Energy Transition, Infrastructure Gap, Urban-Rural Divide, Policy Response
Why in News?
India’s energy supply chain has come under pressure due to disruptions in the Strait of Hormuz, a critical global oil and gas transit route. The ongoing West Asia tensions have impacted the supply of Liquefied Petroleum Gas (LPG) and Liquefied Natural Gas (LNG), highlighting India’s heavy import dependence and vulnerability to geopolitical shocks.
Introduction
Energy security is a critical component of national security and economic stability. India, being one of the largest energy consumers in the world, relies heavily on imports of fossil fuels, particularly LPG and LNG. The recent disruptions in West Asia have exposed structural weaknesses in India’s energy architecture, especially the dependence on maritime chokepoints such as the Strait of Hormuz.
Understanding the differences between LPG and LNG, along with their role in India’s energy ecosystem, is essential to analyse the broader implications of such crises.
Understanding LPG and LNG
Liquefied Petroleum Gas (LPG)
LPG is a mixture of propane and butane obtained during crude oil refining and natural gas processing. It is liquefied under moderate pressure and occupies about 1/260th of its gaseous volume, making it suitable for storage and transportation.
It is widely used as a domestic cooking fuel, especially in rural and semi-urban India. LPG is stored in cylinders and transported through road networks, making it accessible but also dependent on continuous supply logistics.
However, LPG is heavier than air, which increases its risk factor in case of leakage.
Liquefied Natural Gas (LNG)
LNG is natural gas, primarily methane, cooled to about –160°C to convert it into liquid form. This reduces its volume to about 1/600th, making it efficient for long-distance transportation.
LNG is regasified and supplied as:
- PNG (Piped Natural Gas) for households
- CNG (Compressed Natural Gas) for vehicles
- Industrial fuel
It is transported via specialised cryogenic ships and pipelines, making it safer and more efficient compared to LPG. LNG is lighter than air and disperses quickly, reducing fire hazards.
Key Differences Between LPG and LNG
| Feature | LPG | LNG |
| Composition | Propane & Butane | Methane |
| Source | Crude oil refining | Natural gas |
| Storage | Cylinders | Cryogenic tanks |
| Transport | Road | Ships + pipelines |
| Safety | Higher risk | Relatively safer |
| Usage | Cooking | Multi-sector |
Impact of West Asia Crisis on India
Supply
India imports around 60% of its LPG, and nearly 90% of these imports pass through the Strait of Hormuz.
This means that approximately 54% of India’s LPG supply is vulnerable to disruptions in this region.
Consequences:
- Direct impact on 33.3 crore households dependent on LPG
- Increased pressure on government subsidies
- Supply prioritisation for domestic use
- Reduction in industrial LPG supply
Impact on LNG Supply
India imports nearly 50% of its natural gas, with 55–60% sourced from West Asia.
This translates to about 30% of LNG supply being affected during disruptions.
Government Response:
- Ensured uninterrupted supply to:
- PNG households
- CNG transport sector
- Reduced supply to industrial consumers
Government Measures and Policy Response
1. Supply Prioritisation
The government prioritised essential sectors:
- LPG for domestic cooking
- LNG for transport and household use
2. Boosting Domestic Production
Refineries were directed to maximise LPG output by diverting propane and butane.
- Domestic production increased by 40%
- Share of domestic LPG rose from 40% to 55%
3. Demand Management
To manage supply shortages:
- Cylinder booking intervals increased
- Urban: 25 days
- Rural: 45 days
4. Alternative Fuel Usage
Industries were encouraged to shift to:
- Fuel oil
- Kerosene
- Biomass
- Coal
5. Expansion of PNG Infrastructure
The government accelerated PNG expansion through policy support.
- Around 60 lakh households can shift immediately
- Reduces dependence on LPG imports
Structural Issues in India’s Energy System
1. Import Dependence
Heavy reliance on imports exposes India to global price shocks and geopolitical risks.
2. Infrastructure Imbalance
- LPG: Widely accessible but import-dependent
- PNG: More efficient but limited to urban areas
3. Urban-Rural Divide
- LPG dominates rural India
- PNG infrastructure is concentrated in cities
4. Supply Chain Vulnerability
Dependence on a single chokepoint like Hormuz increases systemic risk.
Way Forward
- Diversification of import sources
- Expansion of gas pipeline infrastructure
- Promotion of renewable energy alternatives
- Strengthening domestic production capacity
- Encouraging energy-efficient technologies
Conclusion
The West Asia crisis has highlighted the fragility of India’s energy security framework. While LPG ensures accessibility, LNG offers efficiency and sustainability. A balanced transition towards a diversified, resilient, and infrastructure-driven energy system is essential for long-term energy security.
UPSC PYQ
The LPG cooking gas contains propane and butane as the constituents. A sulfur-containing compound is added to the LPG, because: (NDA-II/2016)
A. it lowers the cost of production
B. it enhances the efficiency of LPG
C. it facilitates easy detection of leakage of the gas
D. it assists in liquefying hydrocarbons
Answer: C
CARE MCQ
Q. Consider the following statements regarding LPG and LNG:
I. LPG mainly consists of propane and butane and is commonly used for cooking and heating.
II. LNG is natural gas cooled to very low temperatures for easier storage and transport.
III. LPG requires cryogenic storage at extremely low temperatures, unlike LNG.
How many of the above statements are correct?
A. Only one
B. Only two
C. All the three
D. None
Answer: B
Explanation:
- Statement I – Correct: LPG is a mixture of propane and butane and is widely used as a domestic cooking fuel and for heating.
- Statement II – Correct: LNG is natural gas (mainly methane) cooled to about –160°C to convert it into liquid form for easier transport.
- Statement III – Incorrect: It is LNG, not LPG, that requires cryogenic storage. LPG can be stored under moderate pressure in cylinders.
Hence, option (b) is correct.
Additional Information:
- LNG occupies about 1/600th of its gaseous volume, while LPG occupies about 1/260th.
- LPG is portable and widely used in rural areas, whereas LNG is mainly used after regasification via pipeline networks (PNG/CNG).
- LNG handling requires specialised infrastructure, making it more complex than LPG.
