Powering the Transition: Energy, SDGs and LiFE

The energy transition is the shift from fossil-fuel-based energy systems to low-carbon sources such as solar, wind, hydro, and green hydrogen. For India it is both a climate commitment and a development strategy: the country has pledged 500 GW of non-fossil electricity capacity by 2030 and net-zero emissions by 2070, while sustaining growth for a population whose energy demand keeps rising. This article maps India's transition, the institutions that must carry it, the SDGs that frame it, and Mission LiFE, which puts the individual at the centre of climate action.

The scorecard: where India stands

India's renewable energy sector has expanded rapidly over the last decade and is now a key pillar of the country's low-carbon strategy. Total installed power capacity is about 533 GW, with 283.46 GW from non-fossil sources as of March 2026, over half of all capacity: the 50 percent non-fossil milestone was crossed in June 2025, five years ahead of the NDC target. Renewable capacity has more than tripled from around 76 GW in 2014, and a record 55.29 GW was added in FY2025-26. Globally, India ranks 3rd in total renewable capacity, 3rd in solar, and 4th in wind power.

The targets ahead are steeper than the progress so far. India aims for 500 GW of non-fossil capacity by 2030 and net-zero emissions by 2070. The updated Nationally Determined Contribution targets a 47% reduction in the emissions intensity of GDP by 2035. Meeting these numbers requires not just more solar panels and turbines, but a transformed grid, solvent distribution companies, and storage at scale.

The four pillars: sun, wind, water, biomass

India's renewable mix rests on four very different resources, each with its own geography. Solar energy is the most abundant: an estimated 748 GW of potential, with 4 to 7 kWh per sq m per day of insolation and more than 300 sunny days a year. It is modular, serving both giant solar parks and rooftop systems. Wind energy is mature but site-specific, with potential of about 695 GW at 120 m hub height rising to 1,163 GW at 150 m; it complements solar because winds are often stronger during the monsoon and at night. Hydropower is the reliable workhorse, providing base-load and peak power plus the grid stability that variable renewables need. Bioenergy converts agricultural residue and organic waste into power; it is dispatchable, unlike solar and wind, and it turns a pollution problem, stubble burning, into an energy input.

The policy engine: missions and schemes

A stack of missions and schemes drives deployment. The National Solar Mission remains the flagship for large-scale solar through parks and rooftop systems. PM Surya Ghar Muft Bijli Yojana promotes rooftop solar with capital subsidies, targeting 1 crore households and reaching nearly 40 lakh installations by June 2026. PM-KUSUM solarises agriculture through solar pumps and grid-connected plants, with over 11 lakh off-grid solar pumps installed and nearly 16 lakh more pumps covered through feeder-level solarisation (August 2026), and subsidies of 30 to 50%. The PLI scheme for solar PV manufacturing has pushed domestic cell capacity from 9 GW to 25 GW and module capacity from 38 GW to 74 GW between March 2024 and March 2025. The Green Energy Corridor builds the transmission backbone for integrating renewables, targeting the evacuation of 44 GW of which about 26 GW had been integrated by March 2026, while the Renewable Purchase Obligation mandates that DISCOMs procure a fixed share of renewable power, guaranteeing demand.

Green hydrogen is hydrogen produced by electrolysing water with renewable electricity, so its production emits no carbon. It matters because it can decarbonise hard-to-abate sectors such as steel, fertilisers, refining, and heavy transport, where direct electrification is difficult. The National Green Hydrogen Mission, approved by the Cabinet in January 2023 with an outlay of Rs. 19,744 crore, targets 5 million metric tonnes per annum of green hydrogen production capacity by 2030, backed by about 125 GW of associated renewable capacity, over Rs. 8 lakh crore in investments, 6 lakh jobs, and Rs. 1 lakh crore of avoided fossil-fuel imports.

Wind beyond the shore, heat below the ground

Offshore wind energy is electricity generated by turbines installed in the sea, where winds are stronger and steadier and large projects do not compete for scarce land. India's framework begins with the National Offshore Wind Energy Policy, 2015, and the resource is concentrated off Gujarat and Tamil Nadu in the usual official assessments. It matters because it can add large, land-free capacity near coastal demand centres, but it is not simple wind shifted to water: foundations, subsea cables, ports, marine ecology, fishing grounds and shipping lanes all enter the project design.

Geothermal energy is heat stored beneath the Earth's surface, used directly for heating or converted into electricity where hot springs and reservoirs are hot enough. The best-known Indian prospect is the Puga valley in Ladakh, long studied for power generation. Its promise is firm, weather-independent renewable power; its limits are equally clear: the resource is location-specific, drilling is costly, and extraction must manage risks such as induced seismicity and associated gases. For India today it is a frontier technology to map carefully, not a pillar on the scale of solar and wind.

Liquid transitions: ethanol, biofuels and the methanol economy

Biofuels are fuels produced from biomass such as crop residues, plant waste, used cooking oil and municipal organic waste, used in place of or blended with petrol and diesel. Their climate claim rests on the carbon cycle: growing feedstock absorbs carbon dioxide that combustion later releases, though the full benefit depends on land, water and fertiliser used to grow it. The umbrella support is the National Bioenergy Programme, which groups waste-to-energy plants, biomass briquettes and pellets, and biogas units; the Global Biofuels Alliance, launched on the sidelines of the G20 summit in New Delhi, tries to build international markets and standards for the same fuels.

Ethanol blending is the mixing of ethyl alcohol, produced mainly from sugarcane and grain feedstocks, with petrol. E20 is petrol blended with 20 percent ethanol. In a dated milestone, India reported achieving the E20 target in 2025, five years ahead of the original 2030 schedule under the Ethanol Blending Programme. The gains are lower crude imports and an additional income stream for farmers and distilleries; the costs to watch are water-intensive feedstock, food-versus-fuel competition if grain diversion grows, and vehicle material compatibility at higher blends. Treat the 2025 achievement as a labelled snapshot of that year, not as proof that every higher blend is automatically sustainable.

Methanol economy is the idea of using methanol as a transport fuel, cooking fuel and industrial feedstock, produced from natural gas, biomass, high-ash coal or captured carbon dioxide. Its attractions are that it is a liquid, can use existing handling systems with modification, and can be made from domestic resources. Its limits are scale, toxicity handling and the fact that methanol made from coal can carry a heavy carbon footprint unless emissions are captured. For examination use, methanol is best presented as a debated diversification option beside ethanol and green hydrogen, not as a settled replacement fuel.

The weakest link: DISCOMs, the grid, and net metering

DISCOMs (electricity distribution companies) buy power from generators and sell it to end consumers. They are the point where the entire power sector's money is collected, and their financial stress is the transition's biggest institutional bottleneck: weak balance sheets lead to delayed payments to generators, which erodes investor confidence and slows renewable expansion. The underlying causes are familiar: high aggregate technical and commercial (AT&C) losses, subsidised tariffs that are not compensated on time, and politically delayed tariff revisions.

Net metering is the billing mechanism that makes rooftop solar viable for households: surplus electricity generated on a rooftop is fed into the grid, and the owner's bill is credited for it. PM Surya Ghar builds on this logic by adding capital subsidies to shorten the payback period. For the grid itself, the National Smart Grid Mission (2015) and the Smart Meter National Programme (targeting 250 million smart meters) aim to cut transmission and distribution losses, improve billing accuracy, and integrate variable renewables. The hurdles are cost, interoperability across vendors, cybersecurity and data-privacy risks, and a shortage of trained manpower.

Headwinds: why the transition is hard

The sources converge on a way forward that is a package: strengthen DISCOM finances and ensure timely payments, enforce Renewable Purchase Obligations, expand transmission and pumped-storage capacity, promote blended finance and domestic manufacturing, and plan explicitly for a just transition so that the benefits of clean energy reach all sections rather than bypassing them.

The frame: sustainable development and the SDGs

Sustainable development, as defined by the Brundtland Commission (1987), is development that meets the needs of the present without compromising the ability of future generations to meet their own needs. It rests on three pillars: social sustainability (equity, health, education, and culture), economic sustainability (inclusive, resource-efficient growth and decent work), and environmental sustainability (conservation of ecosystems and responsible use of natural resources). The core idea is intergenerational equity: the present may not consume what the future needs.

The Sustainable Development Goals (SDGs), adopted in 2015 by 193 UN member states as part of the 2030 Agenda, are 17 interconnected goals to be achieved by 2030, rooted in universality, integration, and leaving no one behind. The environmentally loaded goals include SDG 7 (affordable and clean energy), SDG 12 (responsible consumption and production), and SDG 13 (climate action). India's progress is tracked on the UN SDG Index, where the country improved from 99th in 2025 to 94th of 167 countries in 2026, its highest ranking so far, aided by near-universal household electrification under Saubhagya and a steady policy push on renewables.

The scoreboard for that frame is the SDG India Index, NITI Aayog's sub-national measurement of how states and Union Territories progress towards the goals. It is a composite index built from indicators mapped to the goals, first released in 2018, and it turns a global agenda into federal comparison: states can see where they lead, where they lag and which goals drag the composite down. Label any score by its edition year, because indicators and state ranks change between editions; the durable point is the method, a public, indicator-based race among states rather than a one-time national claim.

Mission LiFE: putting the individual in the climate story

Mission LiFE (Lifestyle for Environment) is an India-led global mass movement for mindful and deliberate utilisation instead of mindless and destructive consumption. The concept was introduced by the Prime Minister at COP26 in Glasgow on November 1, 2021, and the mission was formally launched on October 20, 2022, at the Statue of Unity in Kevadia, Gujarat, in the presence of the UN Secretary-General. It is part of India's updated Nationally Determined Contribution (NDC), making India the first country to put lifestyle change inside its climate pledge.

LiFE works through a three-phase strategy. Change in Demand (Phase I) nudges individuals to practise simple, effective environment-friendly actions in daily life. Change in Supply (Phase II) enables industries and markets to respond to that shifted demand with sustainable products and services. Change in Policy (Phase III) influences government and industrial policy to support sustainable consumption and production at scale. The mission lists 75 individual actions across 7 themes: saving energy, saving water, saying no to single-use plastic, sustainable food systems, reducing waste, reducing e-waste, and healthy lifestyles. Those who live this way are called Pro-Planet People (P3). The UN Environment Programme estimates that if just one billion of the world's eight billion people adopt environment-friendly behaviour, global carbon emissions could fall by about 20%.

Development versus conservation: the hard trade-offs

Sustainable development is tested where projects and ecosystems collide. The Great Nicobar Island Development Project, a Rs. 72,000 crore mega-infrastructure plan, proposes an International Container Transshipment Terminal at Galathea Bay, a dual-use greenfield airport, a gas and solar power plant, and a township on India's southernmost island. It would divert about 130 sq km of tropical rainforest and fell around 9 lakh trees. Galathea Bay is a crucial nesting site for the leatherback turtle and the endemic Nicobar megapode; the project threatens the Shompen Particularly Vulnerable Tribal Group and the Nicobarese; and the island sits in a high seismic and tsunami-prone zone. The case for it is strategic and economic: capturing transshipment traffic now lost to Colombo and Singapore, strengthening India's Indo-Pacific footprint near the Malacca chokepoint, and anchoring the blue economy. The case against it is ecological and human: an irreplaceable island ecosystem and tribal communities that cannot be compensated elsewhere.

A quieter example of the same balancing act is the Vehicle Scrappage Policy (the Voluntary Vehicle-Fleet Modernization Programme, 2021), which phases out old, polluting vehicles through mandatory fitness testing: private vehicles over 20 years and commercial vehicles over 15 years that fail become End-of-Life Vehicles for scrapping. With over 129 registered scrapping facilities and 75-plus automated testing stations, and more than a crore vehicles estimated eligible, the policy links circular economy principles to cleaner air: metals are recovered, old engines leave the road, and manufacturing demand is partly recycled rather than freshly mined.

The Aravalli Range is the newest front line. In November 2025 the Supreme Court adopted a uniform scientific definition of the Aravalli Hills: any landform rising 100 metres or more above the surrounding terrain. The Aravallis are among the world's oldest mountain systems, running over 800 km from Gujarat through Rajasthan and Haryana to Delhi and peaking at Guru Shikhar (1,722 m) on Mount Abu. They block the Thar Desert's eastward march, divide Bay of Bengal and Arabian Sea drainage in a semi-arid belt, recharge aquifers, and host 22 wildlife sanctuaries and 3 tiger reserves. The definition matters because mining and real-estate interests had long exploited the absence of a legal meaning of Aravalli to nibble at the range; a scientific threshold now decides what the law protects.

Mitigation vs. adaptation: the two halves of climate action

Mitigation tackles the causes of climate change by reducing greenhouse-gas emissions or enhancing carbon sinks; adaptation tackles the consequences, adjusting natural and human systems to actual or expected climate impacts. The distinction matters because the two demand different instruments: mitigation is measured in tonnes of carbon dioxide avoided, adaptation in lives, livelihoods, and assets protected.

India's energy transition is overwhelmingly a mitigation story: renewable energy deployment, energy-efficiency programmes such as UJALA and the Perform, Achieve and Trade (PAT) scheme, and afforestation that builds the carbon sink pledged in the NDC. Adaptation shows up in climate-resilient infrastructure, early-warning systems for cyclones and floods, drought-resistant crop varieties, and coastal protection. The National Action Plan on Climate Change (NAPCC) (2008) splits its eight missions across both halves: the National Solar Mission and the energy-efficiency mission on the mitigation side, and the missions on sustainable agriculture, water, and the Himalayan ecosystem on the adaptation side.

Mission LiFE is India's distinctive contribution to the mitigation half: a demand-side push that treats individual behaviour, not just technology and policy, as a climate lever.

IREDA: the financier behind the energy transition

The Indian Renewable Energy Development Agency (IREDA) is a Non-Banking Financial Company under the Ministry of New and Renewable Energy (MNRE) that finances renewable energy and energy efficiency projects. Established in 1987, it is the government's dedicated green-financing institution: where commercial banks see risky new technology, IREDA is designed to see bankable clean energy.

Its role is to lend to project developers in solar, wind, small hydro, biomass, waste-to-energy and emerging segments like green hydrogen and electric mobility, alongside refinancing and co-financing with other lenders. Because India's 500 GW non-fossil target needs capital on a scale public budgets cannot supply alone, IREDA's loan book and its ability to crowd in private finance sit at the centre of the transition story. Prelims 2015 asked what the agency is and under which ministry it works: NBFC, MNRE, renewable project finance.

Key Terms

• The energy transition: The energy transition is the global shift from fossil-fuel-based energy systems to low- or zero-carbon sources such as solar, wind, hydro and green hydrogen, combined with energy efficiency and electrification of transport and industry. For India it means meeting fast-rising electricity demand while honouring its net-zero-by-2070 pledge through massive renewable capacity addition and reduced fossil dependence. The transition spans technology, finance, grids and jobs. Example: India's National Green Hydrogen Mission, which targets 5 million tonnes of annual green hydrogen production by 2030.
• Mission LiFE: Mission LiFE (Lifestyle for Environment) is India's 2022 global initiative urging individuals toward mindful, sustainable consumption, summed up as Pro-Planet People. Proposed by India at COP26 in Glasgow in 2021 and launched in October 2022, it lists everyday actions across themes like saving energy and water, cutting waste, and adopting healthy lifestyles. For UPSC it is the flagship example of behaviour-change climate policy and Indian climate diplomacy. Example: LiFE principles were endorsed in the G20 New Delhi Leaders' Declaration of 2023 through its Green Development Pact.
• Key takeaways: Key takeaways is a quick-revision summary box placed at the end of each article, listing the most exam-relevant points in a short numbered list. It distils definitions, dates, figures, provisions and examples into a form suited for last-minute revision before Prelims and Mains. Together with the article's practice questions, it turns every topic into a self-contained study unit.
• DISCOMs: DISCOMs are power distribution companies that buy electricity in bulk from generators or power exchanges and retail it to end consumers through the local grid. In India they were carved out of the old State Electricity Boards under the Electricity Act, 2003, which unbundled generation, transmission and distribution into separate businesses. Most state DISCOMs suffer large financial losses from high aggregate technical and commercial (AT&C) losses, subsidised tariffs and delayed government dues, which schemes like UDAY and the Revamped Distribution Sector Scheme have tried to repair. Example: Tata Power Delhi and BSES Rajdhani, the private DISCOMs that distribute electricity in the national capital.
• Sustainable Development Goals: The Sustainable Development Goals are the 17 interlinked global goals adopted by all UN member states in 2015 as part of the 2030 Agenda for Sustainable Development. They set targets to be achieved by 2030 across poverty, hunger, health, education, gender equality, clean energy, climate action and peace, succeeding the Millennium Development Goals. Example: SDG 13 calls for urgent action to combat climate change and its impacts.
• Indicator: A measurable variable used to track progress toward a policy goal or target and to assess whether interventions are working. In the Sustainable Development Goals framework, globally agreed indicators measure each target, and national dashboards report indicator-wise status to guide policy and investment. Example: The share of renewable energy in total final energy consumption is an indicator used to track progress toward SDG 7 on affordable and clean energy.
• Total installed capacity: Total installed capacity is the maximum rated electricity generation capacity connected to a grid, measured in megawatts or gigawatts and summed across all sources. It is a headline indicator of a power sector's scale and of progress in the energy transition, though actual generation is always lower because plants rarely run at full output. Analysts pair it with capacity utilisation and generation mix to judge real energy security. Example: India's total installed power capacity of over 470 GW, with a national target of 500 GW of non-fossil capacity by 2030.
• Non-fossil share: The proportion of a country's installed electricity generation capacity that comes from non-fossil sources such as solar, wind, hydro and nuclear power. It is a headline metric of the energy transition and the basis of India's updated Nationally Determined Contribution pledge to reach 50 per cent non-fossil installed capacity by 2030. Example: India crossed the 50 per cent non-fossil installed capacity mark in 2025, five years ahead of its 2030 target.
• Solar: In the energy-transition context, 'Solar' refers to solar power as a source category: the photovoltaic and solar-thermal technologies that convert sunlight into electricity or heat. Solar is the fastest-growing renewable in India and the backbone of its renewable targets, with utility-scale parks, rooftop systems and agricultural pumps as the main deployment routes. Example: The Bhadla Solar Park in Rajasthan, among the world's largest solar parks, which also hosted the record-low tariff bid of Rs 2.44 per unit in 2017.
• Wind: Wind is the large scale movement of air across the Earth's surface, driven by differences in atmospheric pressure created by uneven solar heating of the planet. It is the motive force behind weather systems, ocean currents and the dispersal of seeds and pollutants, and it is also a major renewable energy resource. India's wind resource is assessed at over 1,100 GW of potential, concentrated along the coasts and in states like Tamil Nadu, Gujarat and Maharashtra. Example: The southwest monsoon winds, blowing from the Indian Ocean toward the subcontinent each summer, are the most economically significant wind system for India.
• Global rank: Global rank is a country's comparative standing on an indicator relative to other countries, and in renewable energy it is measured by installed capacity. The article's table places India 4th in the world in total renewable energy capacity, 3rd in solar capacity and 4th in wind capacity, reflecting the scale of India's energy transition. Example: India's global rank of 3rd in solar capacity reflects rapid solar capacity additions under the National Solar Mission.
• Solar energy: Solar energy is energy derived from the Sun's radiation, converted into electricity through photovoltaic cells or into heat through solar-thermal collectors. It is India's largest and fastest-growing renewable energy source, central to the national target of 500 GW of non-fossil capacity by 2030, because India receives high solar insolation across most of the country. Applications range from utility-scale solar parks and rooftop installations to solar pumps for agriculture. Example: The PM Surya Ghar: Muft Bijli Yojana, which subsidises rooftop solar installations for households to generate their own electricity.
• Wind energy: Wind energy is electricity generated by converting the kinetic energy of wind into power through wind turbines, where rotating blades drive a generator. It is one of the cheapest and most mature renewable energy sources, with no fuel cost and no direct emissions during operation, though it faces challenges of intermittency, land requirement and grid integration. India is among the world's top wind power producers and counts wind as a pillar of its 500 GW non fossil capacity target for 2030. Example: The Muppandal wind farm cluster in Tamil Nadu's Aralvaimozhi pass, one of Asia's largest, harnesses funnelled monsoon winds to power lakhs of homes.
• Hydropower: Hydropower is electricity generated from the kinetic energy of flowing or falling water, typically by damming a river and driving turbines with the released flow. It is renewable, has very low operating costs, and, with pumped-storage plants, can supply peak power and grid stability that solar and wind cannot. For UPSC, it matters in energy-transition, federal water-dispute, and Himalayan ecology questions. Example: The 1,000 MW Tehri Hydro Power Complex in Uttarakhand, India's tallest dam-based project.
• Bioenergy: Bioenergy is renewable energy derived from organic materials, or biomass, such as agricultural residues, animal waste, forest byproducts and dedicated energy crops. It can be converted into heat, electricity or transport fuels through combustion, anaerobic digestion or biochemical processes, and it is considered carbon-neutral over its lifecycle because the carbon released was recently absorbed by the plants. In India, bioenergy is a key pillar of the energy transition, with programmes promoting biomass power, biogas plants and compressed biogas. Example: Punjab's biomass power plants generate electricity from paddy straw, tackling both farm waste burning and energy needs.
• Source: Here 'Source' is used as a table column heading in the energy-transition article, meaning the origin or type of an energy resource (for example coal, natural gas, solar, wind or hydro). In energy policy, classifying sources as renewable or non-renewable, and as primary (used directly, like coal) or secondary (converted carriers, like electricity), determines India's energy mix, import dependence and emissions trajectory. Example: In a table of India's installed capacity, the 'Source' column lists entries like solar, wind, hydro, nuclear and coal to compare their shares.
• Potential: In the article's framing, potential is the quantified upside of an approach: for nature-based solutions it means roughly 30 percent of the mitigation needed by 2030, cuts in hazard intensity of about a quarter, and about four-to-one returns on restoration investment, alongside co-benefits for livelihoods and water security. It is a reminder to size an intervention by evidence, not enthusiasm. Example: Protecting and restoring mangroves is presented as high-potential climate action because it stores carbon, buffers storms and supports fisheries at once.
• Strongest regions: In India's energy-transition context, the strongest regions are the states or zones with the highest renewable energy generation potential for a given source. Mapping them helps planners locate solar parks, wind farms and hydro projects where the resource is richest, and to plan the transmission corridors that carry this power to demand centres. Example: Rajasthan, Gujarat and Ladakh are among the strongest regions for solar potential, while Gujarat, Tamil Nadu and Karnataka lead for wind.
• National Solar Mission: The National Solar Mission, formally the Jawaharlal Nehru National Solar Mission, is the solar energy programme launched in January 2010 as part of the National Action Plan on Climate Change. Its target was scaled from 20 GW to 100 GW by 2022 and later to 280 GW by 2030, promoted through solar parks, rooftop schemes, and manufacturing incentives. It matters for UPSC GS-3 energy and environment as India's flagship renewable programme, central to questions on energy transition and climate commitments. Example: The Bhadla Solar Park in Rajasthan, among the world's largest, was developed under the Mission framework
• PM Surya Ghar Muft Bijli Yojana: Launched in February 2024 with an outlay of Rs 75,021 crore, the scheme aims to install rooftop solar systems on one crore households, giving them 300 units of free electricity per month. It provides subsidies of up to Rs 78,000 per household, combined with low-interest bank loans and a national vendor portal, to scale residential solar adoption and reduce grid demand. It is the world's largest domestic rooftop solar initiative. Example: A household installing a 2 kW rooftop system under the scheme receives a central subsidy of Rs 60,000 and can substantially offset its monthly electricity bill.
• PM-KUSUM: PM-KUSUM (Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan) is the 2019 scheme that solarises Indian agriculture. Component A sets up 10,000 MW of decentralised solar plants on barren land, Component B installs 17.5 lakh standalone solar pumps, and Component C solarises grid-connected pumps so farmers can sell surplus power. It matters for UPSC as the flagship energy-agriculture and climate-mitigation link in GS-3. Example: Component B targets 17.5 lakh standalone solar pumps
• PLI scheme for solar PV manufacturing: The Production Linked Incentive scheme for the National Programme on High Efficiency Solar PV Modules, administered by the Ministry of New and Renewable Energy, which offers incentives linked to domestic sales of high-efficiency modules. Approved in Tranche-II in September 2022 with an outlay of Rs 19,500 crore (following Tranche-I of Rs 4,500 crore), it targets about 65,000 MW per annum of fully or partially integrated manufacturing capacity to reduce India's dependence on solar imports. Incentives are tied to local content and module efficiency. Example: Letters of Award under the scheme committed 11 manufacturers to build fully or partially integrated solar PV manufacturing capacity in India.
• Green Energy Corridor: The Green Energy Corridor is India's transmission-infrastructure programme to evacuate renewable electricity from resource-rich regions to consumption centres, enabling the 500 GW non-fossil target for 2030. Phase I built about 9,700 circuit km of transmission lines and substations, while Phase II, approved in 2021 at about Rs 13,042 crore, adds intra-state transmission systems in seven states to evacuate roughly 20 GW of renewable power. A dedicated green corridor is also planned to evacuate 13 GW from Ladakh's solar and wind potential. Example: Phase II builds intra-state transmission networks in states such as Tamil Nadu, Gujarat and Rajasthan so that solar and wind power generated there can reach the national grid.
• Renewable Purchase Obligation: The Renewable Purchase Obligation (RPO) is a legal mandate under the Electricity Act, 2003 requiring distribution companies, captive power plants and open-access consumers to buy a specified share of their electricity from renewable sources. State electricity regulatory commissions fix the annual RPO percentage for their states. It is one of India's main demand-side drivers for solar and wind capacity. Example: A distribution company in a state with a 25 percent RPO must source a quarter of the power it sells from renewable generators or buy renewable energy certificates.
• green hydrogen: Green hydrogen is hydrogen produced by splitting water through electrolysis powered by renewable electricity from sources such as solar or wind, so the production process releases no carbon dioxide. It is the cleanest form of hydrogen, unlike grey hydrogen made from fossil fuels, which emits CO2. Because it can store renewable energy and replace fossil fuels in heavy industry, it is central to plans for deep decarbonisation. Example: India's National Green Hydrogen Mission, approved in January 2023 with an outlay of Rs 19,744 crore, targets at least 5 million metric tonnes of annual green hydrogen production capacity by 2030.
• hard-to-abate sectors: Hard-to-abate sectors are industries whose greenhouse gas emissions are very difficult to eliminate with current technology, because they need extremely high temperatures or involve chemical reactions that release CO2. Steel, cement, chemicals, fertilisers, aviation, and shipping are the classic examples. Cutting their emissions depends on new technologies such as green hydrogen, carbon capture, and alternative fuels. Example: Steelmaking, where green hydrogen can replace coal as the reducing agent in direct reduced iron production.
• National Green Hydrogen Mission: The National Green Hydrogen Mission is the Union Cabinet approved (January 2023) programme to make India a global hub for green hydrogen production, with an outlay of Rs 19,744 crore. It targets 5 million metric tonnes of annual green hydrogen capacity by 2030 through the SIGHT scheme, which incentives electrolyser manufacturing and green hydrogen production. It matters for UPSC as a GS-3 energy transition and decarbonisation topic, linking net zero 2070, export potential, and prelims facts on outlay and targets. Example: The SIGHT programme under the Mission auctioned incentives for electrolyser manufacturing capacity in 2024
• Scheme: In UPSC usage, a scheme is a government programme that turns a policy objective into action through defined beneficiaries, budgets and implementing agencies. The term almost always refers to central or state welfare schemes, and aspirants are expected to know flagship ones by ministry, target group and key features. It is the working unit of governance answers, but as a generic word it has no independent technical definition.
• PM Surya Ghar: A widely used shorthand for the PM Surya Ghar Muft Bijli Yojana, the central scheme promoting rooftop solar installations on households. It is the national programme under which one crore households are targeted for rooftop solar with central financial assistance and 300 units of free electricity per month. See the full entry on PM Surya Ghar Muft Bijli Yojana for scheme details. Example: Government communications and media routinely use PM Surya Ghar as shorthand for the rooftop solar scheme launched in February 2024.
• Solar Parks Scheme: The Solar Parks Scheme (officially the Scheme for Development of Solar Parks and Ultra Mega Solar Power Projects) was rolled out by the Ministry of New and Renewable Energy in December 2014. Under it, the government partners with states and agencies to develop large tracts of land with ready infrastructure (transmission, roads, water, clearances) so developers can set up solar projects quickly and cheaply. The target was raised from 20 GW to 40 GW in 2017, and MNRE has sanctioned over 54 parks totalling nearly 40 GW, with the timeline extended to FY 2028-29. Example: The Bhadla Solar Park in Rajasthan, a flagship solar park hosting over 2 GW of commissioned capacity.
• financial stress: Strain on the finances of firms, utilities or governments arising from the costs and dislocations of the energy transition. It can come from stranded fossil fuel assets losing value as climate policy tightens, from the capital intensity of building clean energy infrastructure, or from the fiscal burden of subsidising both fossil fuels and renewables. Financial stress is a key risk for power distribution companies and banks heavily exposed to thermal power projects. Example: Coal power plants that become stranded assets under tighter emission norms and cheaper renewables, leaving lenders and state utilities with unrecoverable investments.
• aggregate technical and commercial (AT&C) losses: Aggregate technical and commercial (AT&C) losses measure the total energy lost and unpaid in power distribution: they combine technical losses (energy dissipated as heat in transmission and distribution wires and transformers) with commercial losses (theft, faulty metering and uncollected bills). It is computed as one minus the product of billing efficiency (energy billed over energy input) and collection efficiency (revenue collected over amount billed). High AT&C losses make distribution utilities (discoms) financially unviable, which is why reforms like UDAY and the Revamped Distribution Sector Scheme set AT&C loss reduction as their central metric. Example: Smart metering under the Revamped Distribution Sector Scheme is aimed at cutting commercial losses that inflate AT&C figures.
• Net metering: A billing arrangement that lets owners of rooftop solar systems export their surplus electricity to the grid and receive credits on their electricity bill for the units supplied. By shortening the payback period of the rooftop installation, it makes household solar financially viable and underpins schemes such as the PM Surya Ghar Muft Bijli Yojana. Example: A household whose rooftop panels generate more power at midday than it consumes banks the surplus units with the discom and draws on them at night.
• Smart Meter National Programme: The Smart Meter National Programme (SMNP) is run by Energy Efficiency Services Limited (EESL), a joint venture of four power-sector PSUs under the Ministry of Power. It aims to replace 25 crore conventional electricity meters with smart meters, which record consumption in near real time and communicate two ways with utilities, improving billing accuracy and cutting aggregate technical and commercial (AT&C) losses. EESL uses a pay-as-you-save model, recovering costs through monetised energy savings with no upfront investment from discoms. Example: Smart meter rollouts in Uttar Pradesh and Haryana, where discoms use remote reading and tamper alerts to curb power theft and improve collections.
• Challenge: In the context of India's energy transition, 'challenge' refers to the structural headwinds that make shifting from fossil fuels to clean energy difficult. Key challenges include the dominance of coal, oil and gas in meeting nearly three-quarters of energy needs, financially stressed power distribution companies, limited grid capacity and storage for variable renewables, the intermittency of solar and wind, and import dependence for critical minerals and solar cells. These hurdles explain why India's transition is gradual despite ambitious renewable targets. Example: India imports most of its solar cells and modules, exposing its solar expansion to supply chain and price risks.
• DISCOM finances: DISCOM finances refers to the financial health of India's electricity distribution companies, the state-owned utilities that buy power from generators and sell it to end consumers. The sector has historically been stressed by aggregate technical and commercial (AT&C) losses from theft and poor billing, the gap between the average cost of supply and average revenue realised, delayed tariff revisions and unpaid government subsidies. Reform efforts include Ujwal DISCOM Assurance Yojana (2015) and the Revamped Distribution Sector Scheme (2021), which carries an outlay of about Rs 3.04 lakh crore over five years and targets AT&C losses of 12 to 15 percent and a zero ACS-ARR gap. Example: The RDSS's smart-metering push, with tens of crores of smart meters sanctioned, is meant to improve billing accuracy and collection efficiency so that DISCOMs recover their costs.
• Grid and storage: Grid and storage refers to the twin infrastructure needed to absorb large shares of variable solar and wind power: a modernised transmission grid (smart grids, inter-state corridors, flexible dispatch) and energy storage to shift electricity from surplus hours to deficit hours. Storage options include pumped-hydro plants, battery energy storage systems and, over longer durations, green hydrogen. For India's 500 GW non-fossil target, grid and storage are as critical as generation capacity itself. Example: Pumped-storage hydro plants, such as the Tehri pumped-storage project in Uttarakhand, act as giant water batteries that stabilise the grid.
• Intermittency: The variability of renewable energy sources such as solar and wind, whose electricity output fluctuates with weather and time of day rather than being available on demand like conventional power plants. Managing intermittency is a central challenge of the energy transition, addressed through energy storage, grid flexibility, demand-side management and diversified generation. Example: Solar power output drops at night and on cloudy days, which is why battery storage and flexible grids are central to integrating renewables.
• import dependence: Import dependence is the degree to which a country relies on foreign sources for essential goods, especially crude oil, fertilizers, and electronics. High dependence exposes the economy to global price shocks, widens the trade deficit, and weakens energy security. India targets lower dependence through domestic exploration, renewables, and strategic petroleum reserves. It serves GS-3 economy and energy security questions. Example: India's crude oil import dependence reached 88.2 percent in FY25, per the Petroleum Planning and Analysis Cell
• Land and environment: Land and environment is the challenge category describing how renewable energy projects collide with land and ecological constraints. Solar parks, wind farms and transmission corridors need vast land parcels, but acquisition faces delays from fragmented ownership, litigation and compensation disputes, while projects in sensitive habitats raise ecological concerns such as bird collisions and habitat fragmentation. Managing this trade-off through careful siting, environmental clearance and community consent is one of the main bottlenecks in India's energy transition. Example: Large solar parks in Rajasthan have faced scrutiny over their impact on the critically endangered Great Indian Bustard, whose habitat overlaps with prime solar and wind zones, forcing project redesigns and mitigation measures.
• just transition: A just transition is the principle that the shift from a carbon-intensive economy to a green economy must be fair to the workers and communities that depend on fossil fuel industries. It means that decarbonisation policies should come with reskilling, social protection, new livelihoods and economic diversification for coal miners, power plant workers and their towns, so no one is left jobless by climate action. The idea is endorsed by the International Labour Organization and the 2018 Silesia Declaration at COP24. Example: When coal mines or thermal plants close to meet climate targets, a just transition approach would retrain the affected miners for solar or manufacturing jobs and fund alternative local industries, rather than simply shutting the mine.
• sustainable development: Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs, the classic definition from the 1987 Brundtland Commission report. It rests on three pillars, economic growth, social equity, and environmental protection, balanced together rather than traded off. It became the guiding framework of the 1992 Rio Earth Summit and the 2030 Agenda for Sustainable Development. Example: The 17 Sustainable Development Goals adopted by the UN in 2015 translate sustainable development into 169 targets to be achieved by 2030.
• social sustainability: Social sustainability is the pillar of sustainable development concerned with equity, well-being, inclusion and social justice, alongside environmental and economic sustainability. It covers access to education, health, decent work, gender equality and community cohesion, ensuring that development benefits reach vulnerable groups. Policies such as employment guarantees and social security are instruments of social sustainability. Example: MGNREGA supports social sustainability by guaranteeing 100 days of wage employment to rural households.
• economic sustainability: Economic sustainability means meeting present economic needs and maintaining growth without depleting the stock of capital, natural, human and manufactured, on which future production depends. It is one of the three pillars of sustainable development, alongside environmental and social sustainability, and it rejects growth that liquidates natural assets for short-term gains. In policy terms it favours efficiency, innovation and accounting systems that internalise environmental costs. Example: A fishery managed at maximum sustainable yield, so that harvests continue indefinitely without collapsing the fish stock that future incomes depend on.
• environmental sustainability: The practice of meeting the needs of the present without compromising the ability of future generations to meet their own needs, the formulation given by the Brundtland Commission's report Our Common Future (1987). It rests on balancing economic growth, social equity and environmental protection, so that resource use stays within the regenerative capacity of ecosystems. For UPSC, it is the conceptual anchor of sustainable development, the SDGs and India's green growth agenda. Example: The UN Sustainable Development Goals, including SDG 13 on climate action and SDG 15 on life on land, are the principal global framework for environmental sustainability.
• Intergenerational equity: Intergenerational equity is the ethical rule that each generation holds the planet's natural and cultural resources in trust for the next, and must not deplete or degrade them. It is a cornerstone of sustainable development, climate justice and biodiversity conservation. It matters for UPSC environment and ethics answers, where it frames arguments for precautionary regulation, green accounting and the rights of future generations.
• leaving no one behind: Leaving no one behind is the central moral commitment of the United Nations 2030 Agenda for Sustainable Development, meaning that the Sustainable Development Goals must be achieved for every person, especially the poorest and most marginalised. It requires countries to disaggregate data and prioritise the furthest behind: women, tribal communities, persons with disabilities and the extreme poor, rather than only improving averages. The principle gives India's schemes like financial inclusion and sanitation drives a global ethical framing. Example: India's Jan Dhan Yojana, which brought bank accounts to the poorest households, is often cited as a leaving-no-one-behind intervention because it deliberately reached people excluded from the formal financial system.
• SDG 7: SDG 7 calls for ensuring access to affordable, reliable, sustainable and modern energy for all. Its targets include universal energy access, a substantial increase in the renewable share of the energy mix and doubling the rate of energy-efficiency improvement by 2030. It underpins India's push for solar expansion and universal electrification. Example: The Saubhagya scheme's achievement of near-universal household electrification advanced India's SDG 7 access target.
• SDG 12: SDG 12 calls for ensuring sustainable consumption and production patterns. Its targets include halving food waste, achieving sound management of chemicals and waste, substantially reducing waste generation and encouraging sustainable public procurement by 2030. It is the goal most directly linked to the circular economy and Mission LiFE. Example: India's Mission LiFE, which promotes mindful consumption and the reduce-reuse-recycle approach, directly advances SDG 12.
• SDG 13: SDG 13 calls for urgent action to combat climate change and its impacts. Its targets cover strengthening resilience to climate hazards, integrating climate measures into national policies and building education and capacity on climate change. For India it connects to the National Action Plan on Climate Change and the Panchamrit pledges. Example: India's updated NDC commitment to cut emissions intensity and reach 500 GW of non-fossil capacity is reported under SDG 13.
• Saubhagya: Saubhagya (Pradhan Mantri Sahaj Bijli Har Ghar Yojana), launched in 2017, was the central scheme to achieve universal household electrification by giving last-mile electricity connections to all remaining un-electrified rural households and poor urban households. About 2.86 crore households were electrified under it, and the scheme closed in March 2022 after states reported near-universal coverage. It anchors India's SDG 7 progress on affordable and clean energy. Example: Bihar reporting 100 per cent electrification of willing households under Saubhagya in 2018.
• Great Nicobar Island Development Project: This is a NITI Aayog-conceived mega-infrastructure project on Great Nicobar Island in the Andaman and Nicobar Islands, implemented by the Andaman and Nicobar Islands Integrated Development Corporation at an estimated cost of about Rs 75,000 to 81,000 crore. Its components include the Galathea Bay International Container Transhipment Terminal, a greenfield international airport, a township and a gas and solar power plant, spread over about 166 sq km. Strategically located near the Strait of Malacca, it aims to cut India's dependence on foreign transhipment ports, but it is contested over large-scale forest diversion and the rights of the Shompen and Great Nicobarese tribal communities. Example: The proposed Galathea Bay transhipment terminal is intended to handle cargo that India currently routes through foreign ports such as Colombo and Singapore.
• leatherback turtle: The leatherback turtle (Dermochelys coriacea) is the largest living turtle, distinguished by a leathery, rubber-like shell instead of the hard bony shell of other sea turtles. It is a deep-diving ocean giant that feeds mainly on jellyfish and migrates across entire ocean basins, but its nesting beaches are few and threatened by coastal development and plastic pollution. It is listed as Vulnerable on the IUCN Red List and is protected in India under Schedule I of the Wildlife (Protection) Act, 1972. Example: Galathea Bay in Great Nicobar is one of India's most important leatherback nesting sites, and the proposed transhipment port project there has raised concerns because construction threatens the beach where these turtles lay eggs.
• Shompen: The Shompen are a Particularly Vulnerable Tribal Group (PVTG) of Great Nicobar Island, traditionally semi-nomadic hunter-gatherers living in the island's forests. Their small population and isolation make them highly vulnerable to outside contact and displacement. They are in the news because the Great Nicobar development project, including the Galathea Bay transshipment port, threatens their habitat along with that of the Nicobarese. Example: The Great Nicobar port project's impact assessment flagging risks to Shompen habitat.
• Vehicle Scrappage Policy: The Vehicle Scrappage Policy, formally the Voluntary Vehicle Fleet Modernisation Programme announced in the Union Budget 2021-22 and launched in August 2021, aims to phase out old, polluting vehicles in an organised and environment friendly manner. Personal vehicles older than 20 years and commercial vehicles older than 15 years must undergo mandatory fitness tests at automated testing stations, and vehicles that fail are deregistered and scrapped. Owners receive a scrappage value, tax rebates and discounts on new vehicles, and the policy is expected to cut vehicular pollution, improve road safety and feed steel and auto recycling industries. Example: Old vehicles are estimated to pollute 10 to 12 times more than modern vehicles, so the policy targets roughly one crore vehicles lacking valid fitness certificates.
• circular economy: The circular economy is an economic model that minimises waste by designing products for reuse, repair, refurbishment and recycling, keeping materials in use for as long as possible. It contrasts with the linear take-make-dispose model and is a key strategy for sustainable resource use. Example: India's extended producer responsibility rules for e-waste and plastic packaging push manufacturers toward circular economy practices.
• mitigation: In climate policy, mitigation means actions that reduce the severity of climate change by cutting greenhouse gas emissions or enhancing carbon sinks. It includes shifting to renewable energy, improving energy efficiency, electrifying transport, halting deforestation and capturing carbon. Mitigation is paired with adaptation: mitigation tackles the cause of warming, while adaptation manages its unavoidable consequences. Example: India's target of 500 GW of non-fossil electricity capacity by 2030 and its Perform Achieve and Trade scheme for industry are mitigation measures, since they cut the emissions driving climate change.
• adaptation: Adaptation, in the climate context, means adjusting natural or human systems in response to actual or expected climate stimuli and their effects, so as to moderate harm or exploit beneficial opportunities (as defined by the IPCC). It covers structural measures like sea walls and flood embankments as well as non-structural ones like drought-tolerant crop varieties, early warning systems and revised building codes. Adaptation complements mitigation (cutting emissions) and is the core of developing-country negotiating positions on climate justice, since poorer nations bear disproportionate impacts. Example: Growing salt-tolerant paddy varieties in coastal districts and maintaining cyclone early-warning networks are adaptation measures.
• UJALA: UJALA is Unnat Jyoti by Affordable LEDs for All, a national programme launched in January 2015 and implemented by Energy Efficiency Services Limited (EESL). It distributes LED bulbs, tube lights, and fans at subsidised prices to replace incandescent lighting, cutting household electricity bills, peak demand, and carbon emissions. It is a UPSC GS-3 favourite illustrating energy efficiency, demand-side management, and climate action through market transformation. Example: Energy Efficiency Services Limited (EESL), a joint venture of public-sector power companies, implements the scheme
• net-zero emissions: Net-zero emissions is the state in which anthropogenic greenhouse gas emissions are balanced by equivalent removals through natural sinks like forests and technological means like carbon capture, so that no net addition of greenhouse gases enters the atmosphere. It is the core benchmark of the Paris Agreement's mid-century goal. Example: India pledged net zero by 2070 under its Panchamrit commitments at COP26 in Glasgow (2021), compared with 2050 for the European Union and the United States and 2060 for China.
• National Smart Grid Mission (2015): The National Smart Grid Mission was set up in 2015 under the Ministry of Power to modernise India's electricity distribution with smart grid technologies. It aimed to improve reliability, reduce aggregate technical and commercial losses, enable renewable energy integration and empower consumers through smart metering and demand response. It funded smart grid pilot projects across distribution utilities along with training for power sector personnel. Example: Pilot projects under the mission tested smart metering and automated distribution in several states.
• Brundtland Commission (1987): Formally the World Commission on Environment and Development, set up by the UN in 1983 and chaired by former Norwegian Prime Minister Gro Harlem Brundtland. Its 1987 report, Our Common Future, gave the classic definition of sustainable development as development that meets present needs without compromising the ability of future generations to meet theirs. The report made the environment-development linkage the centre of global policy and led toward the 1992 Rio Earth Summit. Example: The phrase sustainable development entered global policy from the Brundtland report Our Common Future (1987).
• 2030 Agenda: The 2030 Agenda for Sustainable Development is a UN plan of action adopted in September 2015 by all 193 UN member states, built on the Millennium Development Goals. It sets 17 Sustainable Development Goals (SDGs) and 169 targets covering poverty, health, education, inequality, climate and ecosystems, to be achieved by 2030. Example: In India, NITI Aayog's SDG India Index tracks and ranks states and union territories on their progress towards the 2030 Agenda goals.
• Nationally Determined Contribution: A country's self-declared climate pledge under Article 4 of the Paris Agreement, setting out the emissions reductions or other actions it will take toward the global temperature goals. Each contribution is communicated to the UNFCCC and updated every five years with increasing ambition under the ratchet mechanism, and together they determine whether the world stays within 1.5 or 2 degrees Celsius of warming. Example: India's updated contribution, submitted in August 2022, targets 50 per cent cumulative electric power capacity from non-fossil sources by 2030 and net-zero emissions by 2070.
• Change in Demand (Phase I): Change in Demand (Phase I) is the first of the three phases of Mission LiFE (Lifestyle for Environment), launched by India in 2022. It focuses on nudging individuals to adopt simple environment-friendly actions in daily life, such as saving energy and water and avoiding single-use plastic. The idea is that mass behavioural change creates the demand signal that markets and policy then respond to. Example: Switching off appliances at the socket, using public transport, and carrying cloth bags instead of plastic ones are Phase I actions.
• Change in Supply (Phase II): Change in Supply (Phase II) is the second phase of Mission LiFE, in which industries and markets respond to the demand created by eco-conscious individuals with sustainable products and services. As more people choose green options, businesses scale up offerings like energy-efficient appliances, electric vehicles and plastic-free packaging. This bridges individual action (Phase I) and policy change (Phase III). Example: The growing availability of 5-star rated appliances and affordable LED bulbs in Indian markets reflects this supply-side shift.
• Change in Policy (Phase III): Change in Policy (Phase III) is the final phase of Mission LiFE, in which governments and industry reshape policies to support sustainable consumption and production at scale. It follows Phase I (individual behaviour change) and Phase II (markets supplying green alternatives). Policy tools here include green public procurement, extended producer responsibility and standards that make sustainable choices the default. Example: India's ban on identified single-use plastic items from July 2022 is an example of the policy-level change this phase envisions.
• Pro-Planet People (P3): Pro-Planet People, abbreviated P3, is the term used for individuals who adopt environment-friendly lifestyles in line with LiFE (Lifestyle for Environment), the India-led global movement for mindful consumption. Such people cut emissions and waste through daily choices like using public transport, reducing e-waste, conserving water, and avoiding single-use plastics. The UN Environment Programme estimates that if one billion of the world's eight billion people adopt environment-friendly behavior, global carbon emissions could fall by about 20 percent. Example: A household that repairs electronics instead of discarding them, composts kitchen waste, and commutes by metro rather than private car
• Nicobar megapode: The Nicobar megapode (Megapodius nicobariensis) is a ground dwelling bird endemic to the Nicobar Islands and India's only megapode species. It nests in large mounds of leaves and soil whose decomposition generates incubation heat, and it is listed as Vulnerable on the IUCN Red List after heavy losses to the 2004 tsunami. Example: Its stronghold includes Great Nicobar Island, where active mound nests are a key indicator of breeding populations.
• National Action Plan on Climate Change (NAPCC): The National Action Plan on Climate Change is India's flagship climate policy framework, launched on 30 June 2008 by the Prime Minister's Council on Climate Change. It sets out eight national missions covering areas such as solar energy, energy efficiency, water, sustainable agriculture, green cover and strategic knowledge. NAPCC remains the anchor for India's domestic climate action and informs later targets such as the Panchamrit pledges made at COP26. Example: The National Solar Mission, one of the eight missions under NAPCC, had its target revised to 100 GW of solar capacity in 2015.
• Indian Renewable Energy Development Agency (IREDA): A Non-Banking Financial Company under the Ministry of New and Renewable Energy, established in 1987 to finance renewable energy and energy efficiency projects. The government's dedicated green-financing institution behind India's clean-energy build-out.
• Geothermal energy: Geothermal energy is heat stored beneath the Earth's surface, used for direct heating or electricity generation at suitable sites. It offers firm renewable power but is location-specific and costly to drill. Example: the Puga valley in Ladakh is India's best-known geothermal prospect.
• Offshore wind energy: Offshore wind energy is electricity from turbines installed in the sea, where winds are stronger and land is not required. It can serve coastal demand at scale but needs marine clearances, ports and subsea cables. Example: India's National Offshore Wind Energy Policy, 2015 frames development off coasts such as Gujarat and Tamil Nadu.
• Ethanol blending (E20): Ethanol blending is mixing ethyl alcohol from biomass feedstocks with petrol; E20 is a 20 percent ethanol blend. India reported achieving E20 in 2025, ahead of the original 2030 schedule. Example: E20 lowers crude dependence but raises feedstock water and food-versus-fuel questions.
• Methanol economy: Methanol economy is the proposed use of methanol as a fuel and feedstock made from gas, biomass, coal or captured carbon dioxide. It promises liquid-fuel diversification from domestic resources, with scale and carbon footprint as open problems. Example: methanol cooking fuel and transport blends discussed under NITI Aayog roadmaps.

Prelims practice