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General Studies 3 >> Science & Technology

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LIQUIFIED NATURAL GAS (LNG)

LIQUIFIED NATURAL GAS (LNG)

 
 
1. Context
 
The death sentence given to eight former personnel of the Indian Navy by a court in Qatar presents the biggest challenge yet to New Delhi’s historically friendly ties with Doha. In the relationship between nations, trade relations play a significant role. In the case of India and Qatar, the balance of trade is tilted heavily in the latter’s favour — which means imports from Qatar far outweigh India’s exports.
It is India’s largest source of liquefied natural gas (LNG) — gas that has been supercooled to liquid form so that it can be transported by sea
 
2. What is liquid natural gas (LNG)?
 
Liquefied Natural Gas (LNG) is a natural gas that has been cooled to extremely low temperatures to convert it from a gaseous state into a liquid state. This process makes natural gas more compact and transportable, facilitating its storage and transportation over long distances
2.1. Key Aspects of LNG

Natural Gas Composition: Natural gas is primarily composed of methane, but it can also contain small amounts of other hydrocarbons like ethane, propane, and butane, as well as impurities like sulfur compounds.

Liquefaction Process: LNG is created through a process known as liquefaction. In this process, natural gas is cooled to temperatures around -162 degrees Celsius (-260 degrees Fahrenheit). This extreme cooling causes the gas to change from a gaseous form into a dense, stable liquid.

Reduced Volume: The liquefaction process reduces the volume of natural gas to approximately 1/600th of its volume in its gaseous state. This reduction in volume makes it more practical and cost-effective to store and transport natural gas over long distances, whether by ship, truck, or pipeline.

Storage and Transportation: LNG is stored and transported in specially designed cryogenic tanks and ships. These tanks and ships are insulated to maintain the extremely low temperatures required to keep LNG in its liquid state. LNG carriers are designed to handle the safe transport of LNG from production facilities to import terminals around the world.

Liquefied Natural Gas (LNG) Analysis | Applied Analytics

3. Uses of liquified natural gas (LNG)

  •  LNG can be used to generate electricity. It is often used in natural gas power plants to produce electricity, especially in regions with limited access to other energy sources.
  •  LNG can be regasified and used for heating purposes in homes, businesses, and industrial facilities
  • LNG is used as a fuel source in various industrial and commercial applications, including in the manufacturing, chemical, and transportation sectors.
  • Some ships and vessels, especially in the maritime industry, use LNG as a cleaner and more environmentally friendly alternative to traditional marine fuels
  • LNG is considered a relatively cleaner fuel source compared to coal and oil because it produces fewer emissions of greenhouse gases, sulfur dioxide, and other pollutants when burned. This has made it a popular choice for reducing emissions in power generation and transportation
  •  LNG is traded globally, with significant producers including countries like Qatar, the United States, Australia, and Russia. It is transported across oceans to meet the energy needs of various regions and countries
4. India, Qatar, and LNG
  • India’s total imports from Qatar in FY2022-23 were valued at $16.81 billion, of which LNG imports alone were worth $8.32 billion, or 49.5%, an analysis of official trade data shows
  • India’s other major imports from Qatar are also fossil fuel-linked commodities and products, such as liquefied petroleum gas (LPG), plastics, and other petrochemicals.
  •  India’s exports to Qatar were valued at just $1.97 billion in FY2022-23. The major exports include cereals, copper articles, iron and steel articles, vegetables, fruits, spices, and processed food products
  • India imported a total 19.85 million tonnes of LNG in FY23, of which 10.74 million tonnes, or 54%, came from Qatar, the trade data show.
  • This means that apart from the 8.5 million tonnes of LNG that Qatar supplied as part of the Petronet LNG term contract, nearly 2.25 million tonnes of additional gas was purchased from Qatar on spot basis last year.
  • While Indian LNG importers — predominantly the public sector oil and gas companies — continue to make efforts to diversify sourcing, it could be years before the high reliance on Qatar can be reduced to a meaningful extent
5. Global LNG Market
  • The global LNG market is a seller’s market after Russia’s invasion of Ukraine and the sanctions that have disrupted Russian natural gas supplies to Europe. After the war broke out, prices, particularly of LNG spot cargoes, surged globally
  • Compared with term contracts (such as the one Petronet has with Qatar), the spot LNG market is prone to higher price volatility.
  • In a supply glut, spot prices tend to fall more steeply than term contracts, as pricing in the latter is based on an agreed formula between the buyer and the seller. And when supplies are tight, spot prices tend to rise much more than term contract rates
  • The war has put Qatar, the world’s largest exporter of LNG, in a unique position of strength. According to industry experts, the extreme price volatility of the past couple of years in global LNG markets has established that term contracts, and not spot purchases, are the more viable option to secure supplies at a reasonable and stable price
  • This has pushed LNG importers all over the world, including India, to scout for long-term contracts with major suppliers, of whom Qatar is the foremost. Over the past few weeks, Doha has announced 27-year LNG supply deals with French, Dutch, and Italian energy majors. In the preceding months, it had signed long-term contracts to supply LNG to China and Germany
 
6. India's dependence on LNG
 
  • India relies on LNG imports to fulfil nearly 50% of its natural gas demand, with close to 60% of these supplies traditionally passing through the strategically significant Strait of Hormuz. Most of these imports originate from Qatar — India’s largest LNG supplier — along with the UAE. However, due to the ongoing conflict in West Asia, shipping activity through the Strait has come to a near standstill. The Strait of Hormuz remains one of the world’s most vital energy transit routes, facilitating almost one-fifth of global oil and LNG trade.
  • India has not received a single LNG shipment from the Persian Gulf for more than two months, severely affecting domestic gas availability despite efforts to secure supplies from alternative international sources. In response to the supply crunch, the government has prioritised natural gas distribution for essential sectors such as household cooking and transportation, while restricting allocations to certain industrial users.
  • Energy experts argue that larger LNG storage reserves could have reduced the severity of the disruption caused by the unexpected blockade of the Strait of Hormuz — an event once viewed as highly unlikely. At present, India possesses 23 LNG storage tanks across different import terminals, with Petronet LNG operating 10 of them.
  • Since LNG must be stored at extremely low temperatures to remain in liquid form, the storage tanks require specialised cryogenic technology. As a result, constructing such facilities is both capital-intensive and time-consuming compared to conventional liquid fuel storage infrastructure.
  • Natural gas is converted into LNG by cooling it to ultra-low temperatures, after which it is transported via specially designed cryogenic ships. Upon arrival at regasification terminals, the LNG is unloaded into cryogenic storage tanks and reconverted into gaseous form before being distributed to end-users through pipeline networks
 
7. Way forward
 
Petronet LNG itself is looking at adding storage tanks at its LNG terminals. It has eight LNG tanks at its flagship Dahej terminal and two at its other terminal at Kochi. Singh said that the under-execution Gopalpur terminal project will add two tanks, and the company is looking to add another tank at the Kochi terminal. As for Dahej, Petronet LNG is looking to add four LNG tanks, and is looking at land availability for the same
 
For Prelims: Current events of national and international importance
 
For Mains:  General Studies III: Infrastructure: Energy, Ports, Roads, Airports, Railways etc.
 
Previous Year Questions

1.Consider the following statements: (UPSC CSE 2020)

  1. In the case of all cereals, pulses and oil-seeds, the procurement at Minimum Support Price (MSP) is unlimited in any State/UT of India.
  2. In the case of cereals and pulses, the MSP is fixed in any State/UT at a level to which the market price will never rise.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

Answer: (d)

2.With reference to Indian economy, demand-pull inflation can be caused/increased by which of the following? (UPSC CSE 2021)

  1. Expansionary policies
  2. Fiscal stimulus
  3. Inflation-indexing of wages
  4. Higher purchasing power
  5. Rising interest rates

Select the correct answer using the code given below:

(a) 1, 2 and 4 only
(b) 3, 4 and 5 only
(c) 1, 2, 3 and 5 only
(d) 1, 2, 3, 4 and 5

Answer: (a)

3. Consider the following statements: (2020)

  1. The weightage of food in Consumer Price Index (CPI) is higher than that in Wholesale Price Index (WPI).
  2. The WPI does not capture changes in the prices of services, which CPI does.
  3. Reserve Bank of India has now adopted WPI as its key measure of inflation and to decide on changing the key policy rates.

Which of the statements given above is/are correct?

(a) 1 and 2 only 
(b) 2 only
(c) 3 only
(d) 1, 2 and 3

Answer: (a)

 
 
 
Source: indianexpress
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