LNG is methane cooled to -160°C for transport, used largely for power and industrial sectors. LPG is propane/butane stored under moderate pressure, commonly used for household cooking and vehicle fuel. In this blog, read the key differences between LNG and LPG.
LPG is primarily used for domestic cooking, whereas LNG powers industries and vehicles with different storage methods. India's LPG supply has been severely disrupted due to 90% of imports passing through the conflict-prone area of the Strait of Hormuz. This has forced dependency on imports for 60% of needs and triggered supply shortages in India. LNG (Liquefied Natural Gas) and LPG (Liquefied Petroleum Gas) act differently in composition, storage, and usage. LNG is methane cooled to -160°C for transport, used largely for power and industrial sectors. LPG is propane/butane stored under moderate pressure, commonly used for household cooking and vehicle fuel.
What is LPG?
LPG stands for Liquefied Petroleum Gas, which is a colourless and flammable mixture of hydrocarbon gases and primarily consists of propane and butane. LPG is used as fuel for cooking, heating and vehicles. It is derived from oil refining or natural gas extraction, and it is pressurised into a liquid for easy storage.
What are the Utilities of LPG?
Liquefied Petroleum Gas (LPG) is a very versatile, clean-burning and portable energy source used primarily for domestic cooking, water heating and space heating. Its industrial uses are powering machinery and manufacturing processes, utilized in transport and acts as an eco-friendly fuel. LPG gas is also utilized in agriculture for crop drying and in commercial businesses for heating and cooling. Let’s take a look at the utilities of LPG:-
- Domestic Cooking: Used in homes for stoves and ovens.
- Heating: Used in residential and industrial central heating systems
- Automotive Fuel: Powers vehicles that can run on LPG, which is cleaner burning gas than gasoline.
- Commercial: Powering forklifts, furnaces and heating water.
- Refrigeration: Used in certain cooling applications for refrigeration purposes.
What is LNG?
LNG stands for Liquefied Natural Gas. LNG is a clear, colourless and non-toxic liquid created by cooling natural gas to approximately -260°F. This process reduces the volume of LPG by 600 times and allows for efficient shipping and storage, especially when pipelines are not possible. LNG gas is primarily used for importing and exporting cleaner-burning energy by powering industry and producing electricity.
What are the Utilities of LNG?
Liquefied Natural Gas (LNG) is primarily used to transport natural gas efficiently over long distances as it serves as a cleaner-burning energy source for power generation. LNG gas is also used in industrial processes, household heating, cooking and heavy-duty transportation. Let’s take a look at the utilities of LNG: -
- Long Distance Energy Transportation: Utilised in transporting natural gas via massive, insulated tankers across oceans from producers, such as Qatar to consumers like Japan.
- Power Generation: Utilised in power plants to produce electricity.
- Industrial Fuel: Utilised by industrial customers as a source of fuel.
- Transportation Fuel: Utilised as an alternative fuel for heavy-duty vehicles and maritime shipping.
Key Differences Between LNG and LPG
LNG (Liquefied Natural Gas) and LPG (Liquefied Petroleum Gas) act differently in composition, storage, and usage. LNG is methane cooled to -160°C for transport, used largely for the power sector and industrial sectors. LPG is propane/butane stored under moderate pressure, commonly used for household cooking and vehicle fuel. Let’s have a key difference between LNG and LPG: -
- Composition: LNG is primarily methane (CH4), whereas LPG is a mix of propane (C3H8) and butane (C4H10).
- Primary Uses: LNG is used in power plants, industrial applications, and heavy-duty transport. LPG is commonly used as a cooking gas, for heating, and as an automotive fuel.
- Infrastructure: LNG requires complex, expensive infrastructure, while LPG is easily transported in cylinders to rural or urban areas.
- Liquefaction Method: LNG is produced by cooling gas to very low temperatures (cryogenic), while LPG is liquefied under moderate pressure.
- Storage & Transport: LNG requires specialized cryogenic tanks -160°C, while LPG Gas is stored in pressurized cylinders or tanks at ambient temperatures.
- Density & Safety: LNG Gas is lighter than air, meaning it disperses easily if leaked. LPG is heavier than air, which can cause it to accumulate on the ground and pose a higher fire risk.
- Energy Density: Both are efficient, but LPG has a higher calorific value per kilogram, whereas LNG is more cost-effective for large-scale, long-distance supply.
What is the West Asia Conflict?
The West Asia conflict is a gradually intensifying crisis due to the military confrontations between Israel and Iran. These two countries also have their respective allies spreading across Lebanon, Yemen and the Gulf. Therefore, the entire region is right now under severe threat. The Israel and Iran war involves high precision strikes, proxy battles and critical threats to global shipping lanes, which is impacting international energy supplies. The ongoing conflict is described as entering a more intense phase with potential for further destabilization of the region.
Why the West Asia Conflict Disrupted India’s LPG Supply?
The West Asia conflict has disrupted India’s LPG supply by threatening the shipping route through the Strait of Hormuz, through which nearly 90% of India's imported LPG passes. The war has caused vessel delays, reduced carrier availability and created shortages. This has also triggered increased import dependence risks and forced supply prioritization for households over industry. Let’s take a look at the reasons why the West Asia conflict disrupted India’s LPG supply: -
1. High Import Dependency
India imports 60-65% of its LPG from the war-affected regions. Roughly 90% of those imports originate in the Gulf region and pass through the critical Strait of Hormuz, where military tensions between the US/Israel and Iran have disrupted shipping traffic.
2. Shipping and Insurance Disruptions
Maritime insurers have increased or withdrawn war-risk coverage, making shipments expensive and scarce. Also, shipping companies are hesitant to operate in the region due to safety concerns, reducing the number of available tankers to load LPG from the Gulf.
3. Supply Chain Delays
Attacks or the possibility of conflict in the Gulf have caused delays in shipments. This has directly impacted India's inventory levels and caused LPG shortages, especially for industrial and commercial users.
4. Reduced Availability
The conflict has forced refineries and suppliers to re-route or delay shipments. This has resulted in roughly 54% of India’s total LPG supply being negatively impacted due to reduced availability of tankers.
Conclusion
Both LPG and LNG are required for different purposes. LPG is heavily used for domestic cooking, whereas LNG is used to power industries and run vehicles. Due to the ongoing war between Iran, Israel and the US, there is a shortage of LPG supply in India. The West Asia conflict has resulted in reduced availability of tankers for shipping, supply chain delays, high import dependency and shipping & insurance disruptions.