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  • International Space Agencies – Missions and Discoveries

    What is White Dwarf?

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    Using the Hubble Space telescope and Transiting Exoplanet Survey Satellite (TESS), astronomers have identified several white dwarfs over the years.

    Where is this white dwarf?

    • A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel.
    • Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula.
    • Only the hot core of the star remains. This core becomes a very hot white dwarf, with a temperature exceeding 100,000 Kelvin.
    • Unless it is accreting matter from a nearby star, the white dwarf cools down over the next billion years or so.

    Limits for white dwarf

    • White Dwarf is half the size of our Sun and has a surface gravity 100,000 times that of Earth.
    • There is a limit on the amount of mass a white dwarf can have.
    • Subrahmanyan Chandrasekhar discovered this limit to be 4 times the mass of the Sun. This is appropriately known as the “Chandrasekhar Limit.”

    Observing white dwarf

    • Many nearby, young white dwarfs have been detected as sources of soft, or lower-energy, X-rays.
    • Recently, soft X-ray and extreme ultraviolet observations have become a powerful tool in the study the composition and structure of the thin atmosphere of these stars.

    What is TESS?

    • The researchers observed this phenomenon using Transiting Exoplanet Survey Satellite (TESS).
    • TESS is a space telescope in NASA’s Explorer program, designed to search for extrasolar planets using the transit method.
    • The primary mission objective for TESS is to survey the brightest stars near the Earth for transiting exoplanets over a two-year period.
    • The TESS project will use an array of wide-field cameras to perform an all-sky survey. It will scan nearby stars for exoplanets.

    How does white dwarf ‘switch on and off’?

    • In these types of systems, the donor star orbit around the white dwarf keeps feeding the accretion disk.
    • As the accretion disk material slowly sinks closer towards the white dwarf it generally becomes brighter.
    • It is known that in some systems the donor stars stop feeding the disk.

     

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  • Capital Markets: Challenges and Developments

    [pib] GoI Floating Rate Bonds

    PIBPrelims Only | Economics | Mains Paper 3: Government Budgeting

    The Government of India has announced the Sale (Re-issue) of Floating Rate Bonds, 2028’.

    What are Bonds?

    • Bonds are investment securities where an investor lends money to a company or a government for a set period of time, in exchange for regular interest payments.
    • Generally, bonds come with a fixed coupon or interest rate. For example, you can buy a bond of Rs 10,000 with a coupon rate of 5%.
    • Once the bond reaches maturity, the bond issuer returns the investor’s money.
    • Fixed income is a term often used to describe bonds, since your investment earns fixed payments over the life of the bond.

    Why are bonds launched?

    • Companies sell bonds to finance ongoing operations, new projects or acquisitions.
    • Governments sell bonds for funding purposes, and also to supplement revenue from taxes.

    What are Floating Rate Bonds?

    • A floating rate bond is a debt instrument that does not have a fixed coupon rate, but its interest rate fluctuates based on the benchmark the bond is drawn.
    • Benchmarks are market instruments that influence the overall economy.
    • For example, repo rate or reverse repo rate can be set as benchmarks for a floating rate bond.

    How do floating rate bonds work?

    • Floating rate bonds make up a significant part of the Indian bond market and are majorly issued by the government.
    • For example, the RBI issued a floating rate bond in 2020 with interest payable every six months. After six months, the interest rate is re-fixed by the RBI.

     

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  • Agricultural Sector and Marketing Reforms – eNAM, Model APMC Act, Eco Survey Reco, etc.

    Nutritional security and climate-friendly agriculture for Punjab

    op-ed snap | Agriculture | Mains Paper 3: Agriculture and related issues

    Context

    As per the latest Situation Assessment Survey (SAS) of agricultural households conducted by the National Statistical Office (NSO), an average Indian farmer earned Rs 10,218 per month in 2018-19 (July-June).

    SAS analysis: Variation across the states and cause of concern for Punjab

    • Across states, the highest income was received by a farming household in Meghalaya (Rs 29,348) followed by Punjab (Rs 26,701), Haryana (Rs 22,841), Arunachal Pradesh (19,225) and Jammu and Kashmir (Rs 18,918).
    • While the lowest income levels were in West Bengal (Rs 6,762), Odisha (Rs 5,112) and Jharkhand (Rs 4,895).
    • But this is not a fair comparison as holding sizes vary widely across states.
    • After normalising these incomes of agri-households by their holding sizes, as in the SAS, Punjab’s ranking on per hectare income falls from 2nd to 11th and Haryana goes down from 3rd to 15th (see figure).
    • The states that would do well on this score are Jammu and Kashmir, Kerala, Meghalaya and Arunachal Pradesh.
    • In these states, people earn their income from cultivating fruits and vegetables, spices, and livestock.
    • These are high value in nature, not linked to MSPs, and market and demand-driven.
    • As per the SAS, the average operated area per holding for Punjab is 1.44 ha (we have used that in the figure), but the Census gives a much higher value of 3.62 ha of average operational holding.
    •  If we normalise incomes of agri-households using Census values of average holding sizes, Punjab’s rank would go further down to 21st (household monthly income Rs 7,376) out of 28 states.

    How can farmers in Punjab and Haryana augment their incomes with more sustainable agriculture?

    1) Swith from paddy to maize

    • Punjab’s former Chief Minister Amarinder Singh had approached the Centre with an idea to create a fund of around Rs 25,000 crore to help farmers switch from paddy to maize.
    • The Centre should give this idea a serious thought with the following modifications:
    • One, the fund should be under a five-year plan to shift at least a million hectares of paddy area (out of a total of 3.1 million hectares of paddy area in Punjab) to maize.
    • Two, the corpus should have equal contributions from the Centre and state.
    • Three, since Punjab wants that farmers be given MSP for maize, an agency, the Maize Corporation of Punjab (MCP), should be created to buy maize from farmers at MSP.
    • Four, this agency should enter into contracts with ethanol companies, and much of this maize can be used to produce ethanol as the poultry and starch industries will not be able to absorb this surplus in maize once a million hectares of paddy area shifts to maize.
    • Fifth, maize productivity must be as competitive as that of paddy in Punjab and the best seeds should be used for that purpose.
    • This is to ensure that ethanol from maize is produced in a globally competitive manner.
    • The GoI’s policy for 20 per cent blending of ethanol in petrol should come in handy for this purpose.

    2) Diversification

    • Other parts of the diversification strategy have to be along the lines of increasing the area under fruits and vegetables, and a more focused policy to build efficient value chains in not just fruits and vegetables but also livestock and fisheries.
    • They are more nutritious and the SAS data shows that their profitability is much higher in these enterprises than in crop cultivation, especially cereals.
    • The sector needs to be backed by proper processing, grading and packaging infrastructure to tap its full potential.

    Benefits of switching to maize from paddy

    • Punjab will arrest its depleting water table as maize needs less than one-fifth the water that paddy does for irrigation.
    • Also, Punjab will save much on the power subsidy to agriculture, which was budgeted at Rs 8,275 crore in the FY2020-21 budget, as paddy irrigation consumes much of the power subsidy.
    • This saving subsidy resulting from the switch from paddy to maize can be used to fund a part of the state’s contribution to the Maize Corporation of Punjab.
    • This could result in a win-win situation for all — farmers, the Government of Punjab and the country — as there will be lesser methane emissions and less stubble burning.
    • Moreover, ethanol will also reduce GHG emissions in vehicular pollution.

    Consider the question “Switching from paddy cultivation to maize can help the Punjab farmers deal with the several issues. In light of this, explain the issues with paddy cultivation and suggest the way forward.”

    Conclusion

    Their income on a per hectare basis needs to increase more sustainably, protecting the state’s land, water and air from further degradation, and producing more nutritious food. Punjab can then shine again on the nutritional security front with sustainable and climate-resilient agriculture.

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  • LGBT Rights – Transgender Bill, Sec. 377, etc.

    Step towards more LGBTQIA+ affirmative medical curriculum doesn’t go far enough

    op-ed snap | Polity | Mains Paper 2: Laws, Institutions & Bodies Constituted For The Vulnerable Sections

    Context

    The National Medical Commission (NMC), the body responsible for regulating medical education in India, released an advisory regarding the LGBTQIA+ community and the necessary changes in the competencies of its competency-based medical education (CBME) curriculum.

    Exclusion of LGBTQIA+ community in medication

    • Medical education in India has focussed only on the binary of male and female, heterosexuality and cis-gendered lives, while excluding homosexuality and gender non-binary and transgender issues.
    • This results in the exclusion of the LGBTQIA+ community.
    • Even with the release of the competency-based medical curriculum in August 2019, the curriculum continues to include a queerphobic syllabus.

    About the NMC notification

    • The Transgender Persons (Protection of Rights) Act, 2019 mandates governments to take measures for the “review of medical curriculum and research for doctors to address their [transgender] specific health issues,” but no action has been taken since then.
    • In June 2021, in response to a case filed by a queer couple, the Madras High Court laid down a set of guidelines and directed the NMC to ban queerphobic practices such as conversion therapy which aims to forcibly change the sexual orientation of a person.
    • In its notification, the NMC has advised medical colleges to teach gender in a way that is not derogatory to the queer community.
    • The authors of medical textbooks have also been asked to amend the books to remove any harmful contents regarding virginity and the queer community.

    Issues with the NMC notification

    • While the NMC advisory title mentions necessary changes in the competencies of its CBME curriculum, there are no specifications on what these changes are.
    •  At the same time, the CBME curriculum itself mentions queerphobic things that are to be taught to students.
    • Certain acts are called as sexual offences even though the Supreme Court has read down Section 377. 
    •  Also, the competencies which will make a future Indian doctor respectful and empathetic in treating a queer patient are missing.

    Way forward

    • The NMC must start by recognising the flaws in its own CBME curriculum and explicitly state the changes required.
    • Specific guidelines on how to make healthcare queer-affirmative are needed.
    • The directive also needs to specify changes across several subjects and not just forensic medicine and psychiatry.
    •  For this, there needs to be a participatory stakeholder consultation towards the development of a queer-affirmative curriculum.
    • Finally, there needs to be clarity on what the NMC plans to do for tackling queerphobia in the current set of health professionals.

    Consider the question “The Transgender Persons (Protection of Rights) Act, 2019 mandates governments to take measures for the review of the medical curriculum. In light of this, discuss the changes needed in the medical curriculum regarding the LGBTQIA+ community.”

    Conclusion

    Without these changes, equitable access to healthcare for queer persons will remain a faraway dream.

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  • G20 : Economic Cooperation ahead

    G7 Trade Ministers’ Digital Trade Principles

    IOCR | International Relations | Mains Paper 2: Bilateral, Regional and Global Groupings and agreements involving India

    The Group of Seven wealthy nations agreed on a joint set of principles to govern cross-border data use and digital trade.

    What are the Digital Trade Principles?

    • Open digital markets: Digital and telecommunications markets should be competitive, transparent, fair, and accessible to international trade and investment.
    • Cross-border data flows: To harness the opportunities of the digital economy and support the trade of goods and services, data should be able to flow freely across borders with trust.
    • Safeguards for workers, consumers, and businesses: Labour protections must be in place for workers who are directly engaged in or support digital trade, providing decent conditions of work.
    • Digital trading systems: To cut red tape and enable more businesses to trade, governments and industries should drive forward the digitization of trade-related documents.
    • Fair and inclusive global governance: Common rules for digital trade should be agreed and upheld at the World Trade Organization.

    About Group of Seven

    • The G-7 or ‘Group of Seven’ includes Canada, France, Germany, Italy, Japan, the United Kingdom, and the United States.
    • It is an intergovernmental organization that was formed in 1975 by the top economies of the time as an informal forum to discuss pressing world issues.
    • Initially, it was formed as an effort by the US and its allies to discuss economic issues.
    • The G-7 forum now discusses several challenges such as oil prices and many pressing issues such as financial crises, terrorism, arms control, and drug trafficking.
    • It does not have a formal constitution or a fixed headquarters. The decisions taken by leaders during annual summits are non-binding.
    • Canada joined the group in 1976, and the European Union began attending in 1977.

    Evolution of the G-7

    • When it started in 1975—with six members, Canada joining a year later—it represented about 70% of the world economy.
    • And it was a cosy club for tackling issues such as the response to oil shocks.
    • Now it accounts for about 40% of global gdp.
    • Since the global financial crisis of 2007-09 it has sometimes been overshadowed by the broader g20.
    • The G-7 became the G-8 in 1997 when Russia was invited to join.
    • In 2014, Russia was debarred after it took over Crimea.

     

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  • Organic Farming – Paramparagat Krishi Vikas Yojna (PKVY), NPOF etc.

    Prakritik Kheti Khushhal Yojana (PK3Y)

    | Enviro & Biodiversity | Mains Paper 3: Conservation, Environmental Pollution & Degradation, Eia

    Women farmers in the hill State of Himachal Pradesh are gradually turning to non-chemical, low cost “natural farming”, under the Prakritik Kheti Khushhal Yojana (PK3Y).

    Prakritik Kheti Khushhal Yojana

    • Launched in 2018, the State’s PK3Y is promoting the climate resilient Subhash Palekar Natural Farming (SPNF), also called ‘Zero Budget Natural Farming’.
    • Over 1.5 lakh farmers have been trained in natural farming in the State so far, with substantial numbers of women participants.

    About Zero Budget Natural Farming (ZBNF)?

    • ZBNF is a set of farming methods, and also a grassroots peasant movement, which has spread to various states in India.
    • Subhash Palekar perfected it during the 1990s at his farm in Amravati district in Maharashtra’s drought-prone Vidarbha region.
    • According to the “zero budget” concept, farmers won’t have to spend any money on fertilisers and other agricultural inputs.
    • Over 98% of the nutrients that crops require — carbon dioxide, nitrogen, water, solar energy — are already present in nature.
    • The remaining 1.5-2% are taken from the soil, after microorganisms convert them from “non-

    Four Wheels of ZBNF

    The “four wheels” of ZBNF are ‘Jiwamrita’, ‘Bijamrita’, ‘Mulching’ and ‘Waaphasa’.

    • Jiwamrita is a fermented mixture of cow dung and urine (of desi breeds), jaggery, pulses flour, water and soil from the farm bund.
    • This isn’t a fertiliser, but just a source of some 500 crore micro-organisms that can convert all the necessary “non-available” nutrients into “available” form.
    • Bijamrita is a mix of desi cow dung and urine, water, bund soil and lime that is used as a seed treatment solution prior to sowing.
    • Mulching, or covering the plants with a layer of dried straw or fallen leaves, is meant to conserve soil moisture and keep the temperature around the roots at 25-32 degrees Celsius, which allows the microorganisms to do their job.
    • Waaphasa, or providing water to maintain the required moisture-air balance, also achieves the same objective.

    Astra’s of ZBNF against pest attacks

    • ZBNF advocates the use of special ‘Agniastra’, ‘Bramhastra’ and ‘Neemastra’ concoctions.
    • They are based on cow urine and dung, plus pulp from leaves of neem, white datura, papaya, guava and pomegranates — for controlling pest and disease attacks.

    Is it organic farming?

    • ZBNF uses farmyard manure or vermicompost.

    However, not all farmers are convinced about ZBNF. Why?

    • Cost of labour: The cost of labour for collection of dung and urine, apart from the other inputs used in preparation of Jiwamrita, Neemastra or Bramhastra is quit higher.
    • Bovine cost: Keeping cows is also a cost that has to be accounted for. Farmers cannot afford to keep desi cows that yield very little milk.
    • Vulnerability to pest attacks:  ZBNF is scarcely practiced.  The crop grown would be vulnerable to attacks by insects and pests have already become pest-immune.

     

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  • Zoonotic Diseases: Medical Sciences Involved & Preventive Measures

    What is Hybrid Immunity?

    Prelims Only | Science Tech | Mains Paper 3: Awareness in various sc and tech fields

    A study has shown that a combination of natural infection with a single dose of vaccine provides greater immunity than either natural infection without vaccination or full vaccination in individuals.

    What is the new study?

    • People without prior infection but fully vaccinated with the Pfizer or AstraZeneca vaccine showed a decline in neutralising antibodies over a period of three to seven months.
    • But the decline was much less in vaccinated people with prior infection.
    • People with hybrid immunity had a higher and more durable neutralising antibody response.
    • The hybrid immunity offers stronger protection than just infection or full vaccination alone.

    What is Hybrid Immunity?

    • It is natural immunity from an infection combined with the immunity provided by the vaccine.
    • The immunological advantage from hybrid immunity arises mostly from memory B cells.

    What are memory B cells?

    • In immunology, a memory B cell (MBC) is a type of B lymphocyte that forms part of the adaptive immune system.
    • B lymphocytes are the cells of the immune system that make antibodies to invade pathogens like viruses.
    • They form memory cells that remember the same pathogen for faster antibody production in future infections.

    How do they assist hybrid immunity?

    • While the bulk of antibodies after infection or vaccination decline after a short while, the memory B cells get triggered on subsequent infection or vaccination.
    • The memory B cells triggered by infection and those triggered by vaccination have different responses to viruses.
    • Infection and vaccination expose the spike protein to the immune system in vastly different ways.
    • After full vaccination, antibodies produced by natural infection continued to grow in potency and their breadth against variants for a year after infection.
    • Unlike after vaccination, the memory B cells formed after natural infection are more likely to make antibodies that block immune-evading variants.

     

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  • Animal Husbandry, Dairy & Fisheries Sector – Pashudhan Sanjivani, E- Pashudhan Haat, etc

    [pib] India’s First Banni Buffalo IVF Calf Born

    Prelims Only | Science Tech | Mains Paper 3:

    With the birth of first IVF calf of a Buffalo breed namely Banni in the country, India’s Ovum Pick-Up (OPU) – IVF work has reached to next level.

    Banni Buffalo

    • Banni buffaloes are also known as “Kutchi” or “Kundi”.
    • The breeding tract includes the Banni area of Kutchchh district of Gujarat.
    • The breed is maintained mostly by Maldharis under locally adapted typical extensive production system in its breeding tract.

    What makes them unique?

    • Banni buffaloes are trained to graze on Banni grassland during night and brought to the villages in the morning for milking.
    • This traditional system of buffalo rearing has been adapted to avoid the heat stress and high temperature of the day.
    • It has unique qualities of adaptation such as the ability to survive water scarcity conditions, to cover long distances during periods of drought and disease resistance.

    Indigenous buffalo breeds in India

    S. No. Breed Breeding state
    1 Banni Gujarat
    2 Bargur Tamil Nadu
    3 Bhadawari Uttar Pradesh and Madhya Pradesh
    4 Chhattisgarhi Chhattisgarh
    5 Chilika Odisha
    6 Gojri Himachal Pradesh and Punjab
    7 Jaffarabadi Gujarat
    8 Kalahandi Odisha
    9 Luit (Swamp) Assam
    10 Marathwadi Maharashtra
    11 Mehsana Gujarat
    12 Murrah Haryana and Delhi
    13 Nagpuri Maharashtra
    14 Nili Ravi Punjab
    15 Pandharpuri Maharashtra
    16 Surti Gujarat
    17 Toda Tamil Nadu

     

     

     

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    Back2Basics: In-vitro fertilization (IVF)

    • IVF is a type of assisted reproductive technology used for infertility treatment and gestational surrogacy.
    • A fertilised egg may be implanted into a surrogate’s uterus, and the resulting child is genetically unrelated to the surrogate.
    • Some countries have banned or otherwise regulate the availability of IVF treatment, giving rise to fertility tourism.
    • Restrictions on the availability of IVF include costs and age, in order for a woman to carry a healthy pregnancy to term.
    • IVF is generally not used until less invasive or expensive options have failed or been determined unlikely to work.

    IVF process

    • IVF is a process of fertilization where an egg is combined with sperm outside the body, in vitro (“in glass”).
    • The process involves monitoring and stimulating a female ovulatory process, removing an ovum or ova (egg or eggs) from the female ovaries and letting sperm fertilise them in a liquid in a laboratory.
    • After the fertilised egg (zygote) undergoes embryo culture for 2–6 days, it is implanted in the same or another female uterus, with the intention of establishing a successful pregnancy.

     

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  • Textile Sector – Cotton, Jute, Wool, Silk, Handloom, etc.

    [pib] Amended Technology Up-gradation Fund Scheme

    PIB | Economics | Mains Paper 3: Effects Of Liberalization On The Economy, Changes In Industrial Policy and their effects on Industrial Growth

    Union Minister of Textiles has reviewed the Amended Technology Up-gradation Fund Scheme (ATUFS) to ease of doing business, bolstering exports & fuelling employment.

    What is ATUFS?

    • The Ministry of Textiles had introduced Technology Upgradation Fund Scheme (TUFS) in 1999.
    • It is a credit linked subsidy scheme intended for modernization and technology up-gradation of the Indian textile industry.
    • It aims at promoting ease of doing business, generating employment and promoting exports. Since then, the scheme has been implemented in different versions.
    • The ongoing ATUFS has been approved in 2016 and implemented through web based iTUFS platform.
    • Capital Investment Subsidy is provided to benchmarked machinery installed by the industry after physical verification.

     

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  • Policy Wise: India’s Power Sector

    A clean energy transition plan for India

    op-ed snap | Economics | Mains Paper 3: Infrastructure: Energy, Ports, Roads, Airports, Railways Etc.

    Context

    India has a long way to go in providing electricity security to its people since its per capita electricity consumption is still only a third of the global average.

    Ensuring energy security and role of coal

    • Energy security warrants the uninterrupted supply of energy at affordable prices.
    •  Thanks to the Electricity Act of 2003, the installed coal-fired thermal power plant (TPP) generation capacity in India more than doubled from 94 GW to 192 GW between March 2011 and 2017.
    • This sharp increase in the installed capacity has enabled the government to increase per capita electricity consumption by 37% while reducing peak demand deficit from 9.8% (2010-11) to 1.6% (2016-17). 
    • TPPs contributed 71% of the 1,382 billion units (BU) of electricity generated by utilities in India during FY 2020-21 though they accounted for only 55% of the total installed generation capacity of 382 GW (as of March 2021).
    • Coal, therefore, plays a vital role in India’s ongoing efforts to achieve Sustainable Development Goal 7, which is “to ensure access to affordable, reliable, sustainable and modern energy for all”.

    Renewable energy utilisation issue and implications for consumers

    • While variable renewable energy (VRE) sources (primarily, wind and solar) account for 24.7% of the total installed generation capacity, as of March 2021, they contributed 10.7% of the electricity generated by utilities during FY 2020-21.
    • However, the ramp-up of VRE generation capacity without commensurate growth in electricity demand has resulted in lower utilisation of TPPs whose fixed costs must be paid by the distribution companies (DISCOMs) and passed through to the final consumer.
    • The current level of VRE in the national power grid is increasing the cost of power procurement for DISCOMs, leading to tariff increases for electricity consumers. 
    • Therefore, India must implement a plan to increase energy efficiency and reduce the emissions of carbon dioxide (CO2) and airborne pollutants from TPPs without making power unaffordable to industries that need low-cost 24×7 power to compete in the global market.

    Way forward: time-bound transition plan

    • Phasing out: The plan should involve the progressive retirement of TPPs(unit size 210 MW and below) based on key performance parameters such as efficiency, specific coal consumption, technological obsolescence, and age.
    • Increasing utilisation: The resulting shortfall in baseload electricity generation can be made up by increasing the utilisation of existing High-Efficiency-Low-Emission (HELE) TPPs that are currently under-utilised to accommodate VRE and commissioning the 47 government-owned TPPs.
    • In addition, the Nuclear Power Corporation of India Limited (NPCIL) is also constructing 11 nuclear power plants with a total generation capacity of 8,700 MW that will supply 24×7 power without any CO2 emissions.
    • The combined thermal (220 GW) and nuclear (15 GW) capacity of 235 GW can meet the baseload requirement (80% of peak demand) during the evening peak in FY 2029-30 without expensive battery storage.
    • The optimal utilisation of existing and under-construction HELE TPPs with faster-ramping capabilities and lower technical minimums also facilitates VRE integration.
    • Since HELE TPPs minimise emissions of particulate matter (PM), SO2, and NO2, the transition plan offers operational, economic, and environmental benefits including avoidance of sustenance Capex and FGD costs in the 211 obsolete TPPs to be retired besides savings in specific coal consumption and water requirement leading to reductions in electricity tariffs and PM pollution.

    Conclusion

    The implementation of transition plan will enable India to safeguard its energy security and ensure efficient grid operations with lower water consumption, PM pollution, and CO2 emissions.

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