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GS Paper: GS3-13.Infrastructure: Energy, Ports, Roads, Airports, Railways etc:

  • Decoding the SC order on regulatory assets

    Introduction

    India’s electricity sector faces a chronic mismatch between the cost of supply and the revenue collected, leaving distribution companies (DISCOMs) financially stressed. To bridge this gap, regulatory assets, unrecovered costs deferred for future recovery, have become common. The Supreme Court has now ordered DISCOMs and regulators to clear these within strict timelines and capped their creation, marking a crucial step towards financial discipline and consumer protection in the power sector.

    Significance of the Supreme Court’s Directive

    The Supreme Court directed State Electricity Regulatory Commissions (SERCs) and DISCOMs to clear existing regulatory assets within four years and any new ones within three years, while capping their creation at 3% of Annual Revenue Requirement (ARR). The Court also mandated transparent recovery roadmaps and intensive audits for non-compliant DISCOMs.The judgment is significant because it marks the first time the Supreme Court has set explicit timelines and caps for the liquidation of regulatory assets. With Delhi DISCOMs alone carrying regulatory assets worth over ₹58,000 crore, and Tamil Nadu reporting ₹89,375 crore in FY 2021-22, the scale of the problem is massive. The ruling highlights how the misuse of regulatory assets has become systemic, leading to debt accumulation, delayed payments to generators, and poor grid modernisation.

    Understanding Regulatory Assets

    1. Definition: Regulatory assets are deferred costs created when the Average Cost of Supply (ACS) is higher than the ARR, allowing DISCOMs to recover the gap later instead of burdening consumers immediately.
    2. Example: If ACS = ₹7.20/unit and ARR = ₹7.00/unit, the shortfall of ₹0.20 per unit across 10 billion units leads to a revenue gap of ₹2,000 crore, which becomes a regulatory asset.
    3. Consumer relief: Prevents immediate tariff shocks but leads to deferred steep tariff hikes later, often with interest.

    Causes of the Average Cost of Supply (ACS)- Annual Revenue Requirement (ARR) Gap

    1. Non-cost reflective tariffs: Tariffs often kept artificially low for political reasons.
    2. Delayed subsidies: State governments fail to release subsidies for agriculture or low-income households on time, worsening DISCOM finances.
    3. Fuel price shocks: Sudden increases in coal/gas prices inflate procurement costs.
    4. Historical evidence: Punjab’s 2004–05 case of ₹487 crore revenue gap set the precedent for regulatory assets in India.

    Impact of regulatory assets on consumers and DISCOMs

    1. Consumers:
      • Immediate stability in tariffs but eventual steeper hikes.
      • Example: Delhi DISCOMs must recover ₹16,580 crore annually in four years, implying an additional ₹5.5/unit on average.
    2. DISCOMs:
      • Persistent cash flow crises as revenue doesn’t cover costs.
      • Forced to borrow → higher debt burden.
      • Limited capacity to modernise grids, integrate renewables, or improve services.
      • Creates a vicious cycle of financial and operational distress.

    Regulatory Assets and Grid Modernisation

    1. Yes: Large unrecovered costs reduce capital available for investment in infrastructure.
    2. Renewable integration challenge: Financially weak DISCOMs are unable to invest in flexible grids or storage solutions.
    3. Consumer service compromise: Lower quality of supply, billing inefficiencies, and lack of digital modernisation.

    Way forward

    1. Cost-reflective tariffs: Rationalise tariffs while shielding vulnerable consumers with targeted subsidies.
    2. Timely subsidy release: State governments must ensure fiscal discipline.
    3. Automatic fuel cost adjustments: Tariffs should respond dynamically to input cost fluctuations.
    4. Annual true-up exercises: Prevent backlog accumulation by reconciling projections with actual costs.
    5. Regulatory discipline: Enforce caps, transparency, and timelines to ensure regulatory assets remain exceptional, not structural.

    Conclusion

    The Supreme Court’s directive signals a turning point for India’s power sector. It underlines the urgent need for financial discipline, timely subsidies, and transparent tariff setting. If implemented well, this move could break the cycle of deferred costs and inefficiencies, ensuring that electricity supply remains both affordable for consumers and financially viable for utilities. For policymakers, it serves as a reminder that delaying reforms through regulatory tools only compounds systemic risks.

    Value Addition

    Importance of DISCOMs in India’s Power Sector

    1. DISCOMs are the last-mile link in the electricity chain, responsible for delivering power to households, industries, and agriculture.
    2. Their financial health directly impacts energy access, affordability, and quality of supply.

    Current Financial Stress

    1. AT&C Losses: Aggregate Technical & Commercial losses remain high at ~16–20% (against a target of 12–15%).
    2. Revenue Gap: ACS > ARR leads to losses per unit supplied.
    3. Debt Burden: Many DISCOMs rely on borrowing to bridge gaps, adding to systemic financial stress.

    Key Causes of DISCOM Distress

    1. Non-cost reflective tariffs: Political pressure keeps tariffs lower than actual supply cost.
    2. Delayed subsidies: State governments often delay releasing agricultural/poor household subsidies.
    3. Cross-subsidisation: Industrial and commercial consumers are charged higher rates to subsidise other sectors, affecting competitiveness.
    4. Fuel price volatility: Sudden spikes in coal/gas prices worsen procurement costs.

    Government Initiatives for DISCOMs

    1. UDAY (2015): Transferred debt to State governments, targeted efficiency improvements.
    2. Revamped Distribution Sector Scheme (RDSS) (2021): RDSS, focuses on smart meters, loss reduction, and IT-based monitoring.
    3. Electricity Amendment Bill (2022) (proposed): Aims to promote competition, allow multiple distributors in the same area, and reduce monopolies.

    DISCOMs and Energy Transition

    1. Financially weak DISCOMs struggle to integrate renewable energy and invest in smart grids, storage, and modernisation.
    2. This hampers India’s 2030 renewable energy targets (500 GW capacity, 50% non-fossil share).

    Global Comparisons

    1. Many countries (e.g., UK, Germany) have cost-reflective tariff mechanisms and automatic adjustment clauses to prevent accumulation of arrears.
    2. India’s reliance on regulatory assets is unusual, reflecting deeper political economy challenges.

    PYQ Relevance

    [UPSC 2021] “Access to affordable, reliable, sustainable and modern energy is the sine qua non to achieve Sustainable Development Goals (SDGs).’’ Comment on the progress made in India in this regard.

    Linkage: The Supreme Court’s directive on regulatory assets directly ties to SDG 7 (Affordable and Clean Energy) by addressing the financial distress of DISCOMs, which undermines both affordability for consumers and sustainability for utilities. India has expanded electricity access impressively, but the persistence of unrecovered costs, delayed subsidies, and non-cost-reflective tariffs highlight the fragility of the system. The judgment pushes for financial discipline, timely subsidy release, and transparent tariff recovery, ensuring that progress towards universal, reliable, and modern energy access is not compromised by systemic inefficiencies.

  • [30th August 2025] The Hindu Op-ed: In an unstable world, energy sovereignty is the new oil

    PYQ Relevance

    [UPSC 2017] The question of India’s Energy Security constitutes the most important part of India’s economic progress. Analyze India’s energy policy cooperation with West Asian countries.

    Linkage: India’s past dependence on West Asia for over 60% of crude made energy security central to its economic stability, but the share has now reduced to under 45% through diversification. The article highlights how geopolitical flashpoints and chokepoints like Hormuz expose the risks of over-reliance on West Asia. Thus, India’s emerging doctrine of energy sovereignty through five domestic pillars complements but does not replace the strategic need for balanced cooperation with West Asian suppliers.

    Mentor’s comment

    Energy defines the destiny of nations. While oil shaped the geopolitics of the 20th century, uninterrupted, affordable, and indigenous energy will decide the balance of power in the 21st. For India, a country importing over 85% of its crude and more than 50% of its natural gas,  energy dependence is not just an economic statistic but a national security liability. In an era of wars, fragile supply chains, and volatile prices, the debate is no longer about transition versus fossil fuel dependence. It is about energy sovereignty as the foundation of survival and strategic autonomy.

    Introduction

    India’s dependence on imported energy is a national vulnerability, with crude oil and natural gas alone forming nearly one-fourth of merchandise imports. While discounted Russian oil has provided temporary relief, heavy reliance on any single source magnifies strategic risks. In a fragile global environment, energy sovereignty is no longer an economic choice but a survival imperative.

    Energy Sovereignty as India’s New National Imperative

    • Import Dependence: Over 85% crude oil and 50% natural gas imports expose India’s economy to global shocks.
    • Economic Burden: Energy imports worth $170 billion (25% of total imports) destabilise the rupee and worsen the trade deficit.
    • Geopolitical Vulnerability: Russian oil now forms 35–40% of India’s imports, compared to just 2% pre-2022. Overdependence on one partner creates strategic risks.
    • Global Flashpoints: Near-conflict between Israel and Iran in June 2025 threatened 20 million barrels/day of global oil flows enough to push Brent crude above $103/barrel within days.
    • Fragile Transition: Despite global rhetoric, fossil fuels still supply 80% of primary energy; premature phase-outs, like Spain-Portugal’s 2025 blackout, prove the risks of over-reliance on intermittent renewables.

    Global Energy Shocks and the Lessons for India

    • 1973 Oil Embargo: Quadrupling of oil prices exposed Western overdependence on OPEC, prompting strategic reserves and diversified sourcing.
    • 2011 Fukushima Disaster: A nuclear meltdown stalled nuclear expansion, but the rise of coal/gas revived emissions. Nuclear energy is now regaining ground as a zero-carbon baseload.
    • 2021 Texas Freeze: Pipeline freezes and turbine failures highlighted the danger of cost-driven systems lacking resilience and weather-proofing.
    • 2022 Russia-Ukraine War: Europe’s 40% gas dependence on Russia ended abruptly, forcing record LNG prices and coal revival.
    • 2025 Iberian Blackout: Grid collapse in Spain-Portugal proved the risk of over-reliance on renewables without dispatchable backup.

    The Five Pillars of India’s Energy Sovereignty

    1. Coal Gasification for Indigenous Energy:
      • India has 150 billion tonnes of coal reserves, long sidelined due to high ash content.
      • Technologies like carbon capture and gasification can convert coal into syngas, methanol, hydrogen, and fertilizers.
      • Unlocking this potential ensures domestic supply security while reducing import dependence.
    2. Biofuels: Rural Empowerment Meets National Security:
      • Ethanol blending programme transferred over ₹92,000 crore to farmers, reduced crude imports, and saved foreign exchange.
      • With the E20 blending target, rural incomes will expand further.
      • SATAT scheme supports compressed biogas (CBG) plants, producing clean fuel and bio-manure with 20–25% organic carbon.
      • Vital for restoring soils in North India where organic carbon has dropped to 0.5% (vs healthy 2.5%).
    3. Nuclear Power for Dispatchable Zero-Carbon Future:
      • India’s nuclear capacity remains stagnant at 8.8 GW.
      • Thorium roadmap, uranium partnerships, and Small Modular Reactors (SMRs) are essential to create a baseload backbone for a renewable-heavy grid.
    4. Green Hydrogen as Strategic Technology:
      • Target: 5 million metric tonnes annually by 2030.
      • Requires domestic electrolyser manufacturing, catalysts, and storage systems.
      • The goal is not just production, but sovereign hydrogen value chains.
    5. Pumped Hydro as Grid Inertia Backbone:
      • Complements solar/wind by offering storage and grid balancing.
      • India’s topography provides vast potential for durable, scalable pumped hydro projects.

    India’s Shift Towards a Diversified Energy Strategy

    1. Reduced West Asia dependence: Crude sourcing from West Asia fell from 60% to under 45%, as per S&P Global.
    2. Diversification of partners: Russia has emerged as a key supplier, but long-term strategy aims at broad-based imports plus indigenous production.
    3. Energy Realism: India recognises transition as a pathway, not a switch. Security and resilience are prerequisites to climate ambition.

    Conclusion

    The 20th century was dominated by oil politics; the 21st will be shaped by energy sovereignty. India’s vulnerability due to high imports, volatile supply chains, and geopolitical risks makes domestic capacity building non-negotiable. Coal gasification, biofuels, nuclear, green hydrogen, and pumped hydro form the sovereign spine of a resilient energy future. The Israel-Iran ceasefire is a reminder: India must act during stability, not after a crisis. Energy sovereignty is no longer a policy choice, it is the foundation of survival, resilience, and strategic autonomy.

  • [pib] State Energy Efficiency Index, 2024

    Why in the News?

    The Bureau of Energy Efficiency (BEE) has released the latest edition of State Energy Efficiency Index 2024 (SEEI 2024).

    About State Energy Efficiency Index (SEEI), 2024:

    • Released by: Bureau of Energy Efficiency (BEE), Ministry of Power, in association with Alliance for an Energy Efficient Economy (AEEE).
    • Coverage: Assesses 36 States/UTs on energy efficiency performance for FY 2023–24.
    • Framework:
      • 6th edition, implementation-focused.
      • 66 indicators across sectors – Buildings, Industry, Municipal Services, Transport, Agriculture, DISCOMs, Cross-sector.
      • Includes new focus areas: EV adoption, star-rated buildings, Demand Side Management (DSM).
    • Classification:
      • Front Runners (>60%), Achievers (50–60%), Contenders (30–50%), Aspirants (<30%).
      • Top performers: Maharashtra (>15 MToE), Andhra Pradesh (5–15 MToE), Assam (1–5 MToE), Tripura (<1 MToE).
    • Key Highlights:
      • 24 states notified Energy Conservation Building Code (ECBC 2017).
      • 31 states adopted EV policies.
      • 13 states promoted solar pumps (Kerala – 74% adoption).
      • All 36 prepared State Energy Efficiency Action Plans (SEEAPs); 31 formed State Energy Transition Committees.
    • Significance: Supports India’s Net Zero 2070 goal by promoting state-level energy transition.

    Back2Basics: Bureau of Energy Efficiency (BEE):

    • Established: 1 March 2002, under the Energy Conservation Act, 2001.
    • Nodal Ministry: Ministry of Power.
    • Mission: To assist in developing policies & strategies for energy efficiency, with the aim of reducing energy intensity of the Indian economy.
    • Functions:
      • Regulatory: Implementation of Energy Conservation Act provisions.
      • Promotional:  Encourage adoption of efficient technologies & practices.
    • Key Achievements:
      • Contributed to 3.5% reduction in India’s overall energy consumption.
      • Implements programmes like Perform, Achieve, Trade (PAT), Standards & Labelling, Energy Efficiency Financing Platform, etc.
    [UPSC 2016] On which of the following can you find the Bureau of Energy Efficiency Star Label?

    1. Ceiling fans 2. Electric geysers 3. Tubular fluorescent lamps

    Select the correct answer using the code given below.

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

     

  • Kalai-II Hydroelectric Project

    Why in the News?

    The Arunachal Pradesh State Pollution Control Board (APSPCB) conducted a public hearing for the proposed 1,200 MW Kalai-II hydroelectric project in Anjaw district.

    About Kalai-II Hydroelectric Project:

    • Location: Anjaw District, Arunachal Pradesh, on the Lohit River (tributary of the Brahmaputra).
    • Capacity: 1,200 MW (six turbines of 190 MW each + one unit of 60 MW).
    • Project Type: Run-of-river with pondage.
    • Key Features: Concrete gravity dam, diversion tunnels, underground powerhouse, surge chamber, and tailrace tunnel.
    • Power Generation: Estimated 4.85 TWh annually; free power worth ₹318 crore/year for the state.
    • Equity: Arunachal Pradesh holds 26% stake.

    Strategic Importance:

    • Energy Security: Expands India’s renewable energy portfolio and hydropower capacity in the North-East.
    • Geopolitical Context: Strengthens India’s presence in the sensitive Brahmaputra basin bordering China.
    • Economic Boost: Contributes to state revenues through free power and Local Area Development Fund (~₹2.2 crore/year).
    • Part of Larger Push: One of 13 stalled hydropower projects in Arunachal Pradesh revived through MoAs with central PSUs, aligning with India’s clean energy targets.
    [UPSC 2008] On which one of the following rivers is the Tehri Hydropower Complex located?

    Options: (a) Alaknanda (b) Bhagirathi *(c) Dhauliganga (d) Mandakini

     

  • The Coastal Shipping Bill, 2024: A Legislative Milestone for Maritime Growth

    The Coastal Shipping Bill, 2024, which replaced Part XIV of the Merchant Shipping Act, 1958, marks a significant legislative reform aimed at modernizing and streamlining India’s coastal trade. It is a key component of the government’s vision for a “Viksit Bharat” and “Aatmanirbhar Bharat,” aiming to unlock the vast potential of India’s coastline. It provides a dedicated legal framework to boost coastal trade, reduce logistics costs, and promote sustainable transportation.

    Need for the new Coastal Shipping Bill, 2024:

    1. Repeals Part XIV of the Merchant Shipping Act, 1958, which was outdated and limited in scope.
    2. Coastal cargo movement had been growing (119% increase from 2014–15 to 2023–24), yet regulatory hurdles, outdated provisions, and fragmented oversight hindered its full potential.
    3. Aligns with key national missions such as PM Gati Shakti, National Logistics Policy, Sagarmala Programme and Maritime Amrit Kaal Vision 2047

    Key Provisions of the Coastal Shipping Bill, 2024

    The Act’s jurisdiction extends to vessels engaged in trade within India’s coastal waters, which include territorial waters (up to 12 nautical miles) and adjoining maritime zones (up to 200 nautical miles).

    1. Expanded Definition of Coastal Trade:
      • Earlier: Only carriage of goods and passengers.
      • Now: Includes services such as exploration, research, and commercial activities, excluding fishing.
      • Recognizes maritime zones up to 200 nautical miles from the Indian coast.
    2. Simplified Licensing Framework: Supports Indian shipbuilding, maritime employment, and reduces regulatory burden.
    Vessel Type Licensing Requirement
    Indian-owned vessels Exempted for coastal trade
    Foreign/chartered vessels License required (issued by DG Shipping)
    OCI-chartered vessels operating outside India No license required

     

    1. Mandated Strategic Planning: National Coastal and Inland Shipping Strategic Plan must be prepared within 2 years and reviewed biennially. It is to be designed by a committee with state representation, ensuring cooperative federalism.
    2. National Database for Coastal Shipping: Aims for real-time tracking, transparency, and data-driven policymaking. It keeps investors informed and supports infrastructure planning.
    3. Modernised Penalties and Decriminalisation

     

    Strategic Vision and Long-term Impact

    “This is a forward-looking, holistic framework aligned with global cabotage practices.”

    — Union Minister of Ports, Shipping and Waterways

    1. Economic Transformation:
      1. Aims to increase India’s coastal cargo share to 230 million metric tonnes by 2030.
      2. Reduces logistics cost (currently ~14% of GDP) by shifting cargo from roads/rails to coastal routes
      3. Coastal shipping is 80% cheaper and more energy-efficient than road transport
    2. Environmental Sustainability:
      1. Supports Net Zero by 2070
      2. Encourages green transport and lower-emission logistics
    3. Job Creation and Industry Support:
      1. Boosts shipbuilding, port services, and manning jobs
      2. Encourages Make in India in the maritime sector.
    4. Strengthened Maritime Security: Greater share of domestic cargo handled by Indian ships reduces reliance on foreign vessels.
    5. Cooperative Federalism: Includes states and UTs in decision-making, enabling inclusive and participatory governance.

    The Coastal Shipping Bill, 2024, represents a landmark step towards building a seamless, efficient, and globally competitive maritime ecosystem in India. By modernizing regulations, promoting domestic industry, and integrating coastal shipping with inland waterways, the Act lays the foundation for a future-ready logistics network that is central to the nation’s economic and strategic goals.

    Mains Practice Question:

    1. Discuss the significance of the Coastal Shipping Act, 2025 in India’s vision for a sustainable and cost-effective transport ecosystem.
    2. Evaluate the role of strategic planning and digital infrastructure under the new Coastal Shipping Act in achieving India’s Maritime Amrit Kaal Vision 2047.

  • Parliament passes Carriage of Goods by Sea Bill, 2025

    Why in the News?

    Parliament has passed the Carriage of Goods by Sea Bill, 2025, replacing the nearly century-old Indian Carriage of Goods by Sea Act, 1925.

    About Carriage of Goods by Sea Bill, 2025:

    • Replaces: The colonial-era Indian Carriage of Goods by Sea Act, 1925.
    • Purpose: Regulates the rights, duties, liabilities, and immunities of parties involved in shipping goods by sea from Indian ports to domestic or international destinations.
    • International Alignment: Retains consistency with the Hague Rules (1924), which also formed the basis of the 1925 Act.
    • Objective: Modernises maritime law in line with global standards and boosts India’s ease of doing business in the maritime sector.

    Key Features:

    • Bills of Lading Defined: It outlines the details of the shipment, including the type and quantity of goods, the origin and destination, and the terms of the agreement between the shipper and the carrier.
      • Includes details on goods’ type, quantity, condition, and destination.
      • Serves as a legally binding contract between the shipper and carrier.
    • Central Government Powers:
      • May issue directions for implementation.
      • Can amend the Schedule of Rules related to bills of lading.
    • Part of Broader Maritime Reforms:
      • Supports port development and coastal trade.
      • Encourages creation of State Maritime Boards and a Maritime State Development Council.
      • Covers port safety, disaster response, pollution control, and dispute resolution.
    • Global Compliance: Aligns India’s shipping laws with evolving international conventions and practices.
    [UPSC 2016] The term ‘import cover’, sometimes seen in the news, refers to

    (a) It is the ratio of value of imports to the Gross Domestic Product of a country

    (b) It is the total value of imports of a country in a year

    (c) It is the ratio between the value of exports and that of imports between two countries

    (d) It is the number of months of imports that could be paid for by a country’s international reserves*

     

  • [pib] India Electric Mobility Index (IEMI)

    Why in the News?

    To support India’s net-zero transport goal by 2070, NITI Aayog launched the India Electric Mobility Index (IEMI) to track and rank States/UTs on their shift to electric mobility.

    [pib] India Electric Mobility Index (IEMI)

    About India Electric Mobility Index (IEMI):

    • Launched by: NITI Aayog in 2024.
    • Purpose: To evaluate and benchmark the progress of Indian States and Union Territories (UTs) in achieving their electric mobility and transport decarbonization goals.
    • Scoring: States and UTs are scored out of 100 using 16 indicators grouped under 3 core themes.
    • Core Themes:
      1. Transport Electrification Progress – Measures EV adoption across segments (2W, 3W, 4W, buses, etc.)
      2. Charging Infrastructure Readiness – Assesses public charging station density, coverage, and policy support.
      3. EV Research & Innovation Status – Tracks EV startups, R&D activity, patents, and skilling efforts.
    • Significance:
      • Supports tailored policymaking and cross-learning.
      • Enables transparency and healthy competition among states.
      • Aligns with India’s net-zero emissions target by 2070.
    • Methodology: Based on VAHAN data, charging infrastructure maps, and stakeholder consultations.
    • Accessibility: Publicly available dashboard and report for rankings, scores, and methodology.

    Key Highlights (2024 Edition):

    • Top Performers: Delhi, Maharashtra, and Chandigarh lead overall in EV readiness.
    • Category Leaders:
      • Transport Electrification: Delhi and Maharashtra.
      • Charging Infrastructure: Karnataka, Haryana, Himachal Pradesh, Ladakh.
      • Research & Innovation: Delhi, Tamil Nadu, Maharashtra, Karnataka, Telangana, Haryana.
    • EV Policy Status: 29 States/UTs have formal EV policies; 4 are in the draft stage.
    • EV Adoption Data:
      • EVs make up 5.3% of private vehicle sales in 2024.
      • Over 12 lakh EVs registered in India during the year.
    • Public Charging Network: India has over 25,000 public EV charging stations.
    • State Categories:
      • Performers: Karnataka, Tamil Nadu, Uttar Pradesh, Chhattisgarh, Odisha, Haryana, Goa.
      • Aspirants: Punjab, Rajasthan, Telangana, Andhra Pradesh, Assam, Bihar, Kerala, North-East states.
    [UPSC 2024] Which one of the following is the exhaust pipe emission from Fuel Cell Electric Vehicles powered by hydrogen?

    Options: (a) Hydrogen peroxide (b) Hydronium (c) Oxygen (d) Water vapour*

     

  • Sawalkote Hydro Project

    Why in the News?

    After suspending the Indus Waters Treaty, India is asserting water control in J&K by reviving the Sawalkote Hydroelectric Project — the UT’s largest planned hydro project.

    Sawalkote Hydro Project

    About Sawalkote Hydro Project:

    • Location: Ramban and Udhampur districts, Jammu and Kashmir.
    • River: Built on the Chenab River (a western river under the Indus Waters Treaty).
    • Agency: Implemented by National Hydroelectric Power Corporation.
    • History: Proposed in the 1960s; delayed due to Pakistan’s objections, environmental issues, and red tape. Revived after India suspended the Indus Waters Treaty post the April 2025 Pahalgam terror attack.
    • Status (2025): Forest clearance granted; tenders floated on 29 July 2025; declared a project of national importance.
    • Timeline: 96 months post-clearance; expected commissioning by or after 2032.

    Key Features:

    • Type: Run-of-the-river (utilizes the natural flow and elevation drop of a river) hydroelectric project.
    • Capacity: 1,856 Megawatts (8 × 225 MW + 1 × 56 MW).
    • Dam: 192.5 m high, roller-compacted concrete gravity dam; reservoir holds 550 million cubic meters.
    • Powerhouse: Underground, with Francis turbines.
    • Cost: ₹22,704.8 crore (~2.6 billion United States Dollars).
    [UPSC 2009] Gandhi Sagar Dam is a part of which one of the following?

    Options: (a) Chambal Project * (b) Kosi Project (c) Damodar Valley Project (d) Bhakra Nangal Project

     

  • [1st August 2025] The Hindu Op-ed: Why the world needs better green technologies

    PYQ Relevance:

    [UPSC 2024] The world is facing an acute shortage of clean and safe freshwater. What are the alternative technologies which can solve this crisis? Briefly discuss any three such technologies citing their key merits and demerits.

    Linkage: This question directly related to “alternative technologies” to address a critical global environmental and resource crisis (freshwater scarcity). This aligns with the broader theme that the world needs better and diverse green technologies to tackle urgent environmental problems and ensure resource self-sufficiency, as emphasized in the context of energy innovation.

     

    Mentor’s Comment: As the push for sustainable energy intensifies, concerns are rising over the efficiency limits of widely used silicon photovoltaics. With the growing need for green hydrogen and land constraints, experts are questioning whether next-gen solar technologies offer better solutions. India must invest in efficient, diverse, and scalable innovations to meet climate goals and ensure energy self-sufficiency.

    Today’s editorial analyses the concerns that are rising over the efficiency limits of widely used silicon photovoltaics. This topic is important for GS Paper III (Environment) in the UPSC mains exam.

    _

    Let’s learn!

    Why in the News?

    Recently, as the global need for clean energy has increased and countries aim to fulfill their climate promises, silicon solar panels have become the most popular choice, changing the look of places from city rooftops to large solar farms in villages.

    What limits silicon photovoltaics in meeting India’s climate goals?

    • Low Energy Efficiency: Silicon solar panels have an in-field efficiency of only 15–18%, meaning a significant portion of solar energy is not converted into electricity. Eg: In Rajasthan, more panels are required to meet energy demand, increasing cost and land use due to low conversion efficiency.
    • High Land Requirement: Due to their low efficiency, silicon panels need a larger surface area to generate the same output compared to newer technologies. Eg: The Rewa Solar Park in Madhya Pradesh covers over 1,500 hectares, reducing land availability for agriculture and conservation.
    • Slow Climate Impact: Despite growing solar capacity, CO₂ levels have risen from 350 ppm in 1990 to ~425 ppm in 2025, indicating renewables are not scaling fast enough. Eg: Even after installing 4.45 TWh of renewable energy by 2024, India remains behind on its climate targets.
    • Environmental Footprint of Manufacturing: The production of silicon panels involves high energy use and toxic chemicals, partially offsetting their green benefits. Eg: Most panels are imported from China, where coal-powered factories dominate, adding to indirect emissions.
    • Incompatibility with Advanced Applications: Silicon PVs are less suitable for high-efficiency applications like green hydrogen production, which needs more consistent, high-output energy. Eg: In pilot projects in Gujarat, using silicon panels reduces the overall efficiency of green hydrogen production due to energy losses.

    Why rethink electrolysis-based green hydrogen?

    • High Energy Consumption: Electrolysis requires more energy to produce green hydrogen than the energy hydrogen provides when used, making the process energy-inefficient. Eg: In India’s pilot projects in Ladakh, the high electricity input from solar panels results in low net energy gain, raising concerns about economic viability.
    • Storage and Transportation Challenges: Hydrogen has very low density, making it difficult and expensive to store and transport, often requiring high-pressure tanks or cryogenic conditions. Eg: In hydrogen mobility projects, such as those in Delhi, leakage and compression issues have hampered safe and cost-effective deployment.
    • Compounding Energy Losses in Conversion: Using green hydrogen to produce green ammonia or methanol, and then extracting hydrogen back, leads to multiple stages of energy loss. Eg: In proposed export hubs like Vizag, converting hydrogen to ammonia for shipping and then reconverting it abroad reduces overall energy efficiency.

    How do land and efficiency issues impact India’s solar push?

    • Low Efficiency Increases Land Requirement: Silicon solar panels with 15–18% efficiency require larger surface areas to generate the same energy as advanced solar technologies. Eg: In Rajasthan’s Bhadla Solar Park, vast desert land is used to compensate for low panel efficiency, which limits deployment in land-constrained states.
    • Urbanisation Limits Land Availability: Rapid urban expansion and the need to conserve green zones reduce the availability of suitable land for large-scale solar projects. Eg: In Mumbai’s metropolitan region, limited open space has pushed the focus toward rooftop solar, which has its own technical and regulatory hurdles.
    • Hinders Achievement of Renewable Energy Targets: The inefficient land-to-energy ratio slows down the pace of solar capacity expansion, affecting progress toward India’s net-zero commitments. Eg: In Tamil Nadu, where land is both fertile and scarce, competing demands between agriculture and solar installations have delayed key solar proposals.

    What role can artificial photosynthesis play in renewable energy?

    • Direct Conversion of Sunlight into Fuel: Artificial photosynthesis (APS) mimics natural photosynthesis to convert sunlight, water, and CO₂directly into fuels like green methanol or hydrogen, offering a clean, efficient alternative to traditional energy-intensive processes.
    • Bypasses Inefficiencies in Current Technologies: APS has the potential to eliminate multiple energy-loss steps such as electrolysis, storage, and reconversion, thereby enhancing the overall energy efficiency of renewable fuel production systems.

    Why invest in next-gen renewable tech like RFNBO? (Way forward)

    • Enhances Energy Independence: Renewable Fuels of Non-Biological Origin (RFNBO) can reduce India’s heavy reliance on imported fossil fuels (currently ~85%), promoting energy self-sufficiency in a geopolitically volatile world.
    • Supports Diverse and Efficient Decarbonisation: RFNBO technologies enable the production of cleaner fuels like green hydrogen, ammonia, and methanol using renewable electricity, offering higher efficiency and adaptability for industrial and transport sectors.
    • Future-Proofing India’s Energy Strategy: Investing in RFNBO ensures India is aligned with global clean energy innovations, allowing it to meet net-zero targets and remain competitive in emerging green fuel markets.

  • Amrit Bharat Station Scheme (ABSS)

    Why in the News?

    PM recently stated that 77 stations in Tamil Nadu are being redeveloped under the Amrit Bharat Station Scheme (ABSS), positioning the state as a hub for railway transformation.

    About the Amrit Bharat Station Scheme (ABSS):

    • Launch: 2022 by the Ministry of Railways.
    • Goal: Modernise and develop railway stations through phased, long-term upgrades.
    • Master Plans: Each station gets a tailored roadmap for future improvements.
    • Focus Areas: Multimodal integration, seamless passenger movement, and upgraded amenities.
    • National Significance: Integral to India’s infrastructure push under the Viksit Bharat vision.

    Key Features of ABSS:

    • Passenger Comfort: Larger waiting halls, clean toilets, executive lounges, lifts, escalators, free Wi-Fi, and business-meeting zones.
    • Accessibility & Connectivity: Expanded circulating areas, barrier-free access for persons with disabilities, and smooth links to other transport modes.
    • Aesthetic Upgrades: Modern façades, clear signage, landscaping, and consistently clean premises.
    • Technology & Information: Digital displays, real-time train info, and self-service e-ticketing kiosks.
    • Sustainability: Energy-efficient systems, green-building elements, and water-conservation measures.
    • Customised Development: Station facilities scaled to local footfall and needs—no one-size-fits-all approach.
    [UPSC 2024] Consider the following statements:

    I. Indian Railways have prepared a National Rail Plan (NRP) to create a future ready railway system by 2028. II. ‘Kavach’ is an Automatic Train Protection system developed in collaboration with Germany. III. ‘Kavach’ system consists of RFID tags fitted on track in station section.

    Which of the statements given above are not correct?

    (a) I and II only (b) II and III only (c) I and III only (d) I, II and III*