BharatNotes Overview
Three interconnected technology domains -- electric vehicles, advanced batteries, and semiconductors -- are reshaping global industrial strategy, geopolitics, and climate policy. India, the world's third-largest automobile market and a net importer of both batteries and chips, has launched ambitious programmes to build domestic capacity in all three areas. For UPSC, this topic spans GS3 (Science & Technology, Economy, Infrastructure, Environment) -- questions test understanding of EV policy, battery chemistry, semiconductor supply chains, India's missions, and the geopolitics of technology self-reliance.
Electric Vehicle Ecosystem
Types of Electric Vehicles
| Type | Full Form | How It Works | Examples |
|---|---|---|---|
| BEV | Battery Electric Vehicle | Powered entirely by a battery; no internal combustion engine; zero tailpipe emissions | Tata Nexon EV, MG ZS EV, Ola S1 Pro |
| HEV | Hybrid Electric Vehicle | Combines an internal combustion engine (ICE) with an electric motor; battery charged by regenerative braking; cannot be plugged in | Toyota Camry Hybrid, Maruti Grand Vitara Hybrid |
| PHEV | Plug-in Hybrid Electric Vehicle | Has both ICE and a larger battery that can be charged externally; runs on electric power for short distances, switches to ICE for longer trips | Not widely available in India yet |
| FCEV | Fuel Cell Electric Vehicle | Uses a hydrogen fuel cell to generate electricity on-board; emits only water vapour | Toyota Mirai; India exploring green hydrogen FCEVs |
Key EV Components
| Component | Function |
|---|---|
| Battery pack | Stores energy; the most expensive component (~40% of EV cost); determines range and performance |
| Electric motor | Converts electrical energy to mechanical energy; types include permanent magnet synchronous motor (PMSM) and induction motor |
| Power electronics | Manages power flow between battery, motor, and charging system; includes inverter, converter, and controller |
| Battery Management System (BMS) | Monitors and manages battery health, temperature, state of charge, and cell balancing |
| Regenerative braking | Converts kinetic energy during braking back into electrical energy, recharging the battery |
India's EV Policy
FAME Scheme
| Feature | FAME-I | FAME-II |
|---|---|---|
| Period | 2015--2019 | April 2019 -- March 2024 |
| Outlay | Rs 895 crore | Rs 10,000 crore |
| Focus | Demand incentives across all EV categories | Prioritised electrification of 2-wheelers and 3-wheelers (~98% of target vehicles); e-buses for public transport |
| EVs supported | ~2.8 lakh vehicles | ~13.2 lakh vehicles supported with subsidies totalling ~Rs 11,500 crore |
| Charging infra | Limited | 2,877 charging stations sanctioned across 68 cities |
PM E-DRIVE Scheme (2024)
| Feature | Detail |
|---|---|
| Approved | 11 September 2024 by Union Cabinet |
| Full name | PM Electric Drive Revolution in Innovative Vehicle Enhancement |
| Outlay | Rs 10,900 crore (originally valid to 31 March 2026; extended to 31 March 2028 for e-buses, e-trucks, e-ambulances, charging infrastructure; e-2W and e-3W subsidies ended 31 March 2026) |
| Replaces | FAME-II (ended March 2024) |
| Coverage | Demand incentives for 24.7 lakh e-2Ws, 3.16 lakh e-3Ws, 14,028 e-buses; also covers e-trucks and e-ambulances |
| Charging infrastructure | 88,500 locations to receive full funding for EV Public Charging Stations (EV PCS) |
| Key change | Broader vehicle coverage (includes e-trucks, e-ambulances); dedicated charging infrastructure funding; upgradation of testing agencies |
PLI Schemes for EV Ecosystem
| PLI Scheme | Outlay | Focus |
|---|---|---|
| PLI for Automobile and Auto Components | Rs 25,938 crore | Incentivises manufacturing of advanced automotive technology products including EVs and components |
| PLI for ACC Battery Storage | Rs 18,100 crore | Advanced Chemistry Cell (ACC) battery manufacturing; 50 GWh total capacity awarded to beneficiary firms; gestation period 2023--2024; production period 2025--2029 |
For Prelims: FAME-II: Rs 10,000 crore; 2019-2024; focused on 2W and 3W. PM E-DRIVE: Rs 10,900 crore; approved September 2024; replaces FAME-II; covers 24.7 lakh e-2Ws. PLI for ACC Battery: Rs 18,100 crore; 50 GWh capacity.
Battery Technology
Lithium-Ion Battery Chemistry Types
| Chemistry | Full Name | Energy Density | Key Properties | Primary Use |
|---|---|---|---|---|
| NMC | Nickel Manganese Cobalt | High | High energy density; good performance; uses cobalt (expensive, ethically sourced concerns) | Premium EVs (long range) |
| LFP | Lithium Iron Phosphate | Moderate | Lower cost; longer cycle life; better thermal stability; no cobalt; heavier | Budget EVs, energy storage; CATL and BYD favour LFP |
| NCA | Nickel Cobalt Aluminium | High | Very high energy density; less thermally stable; used by Tesla (moving towards LFP) | High-performance EVs |
Next-Generation Battery Technologies
| Technology | Status (2025--26) | Key Advantages | Key Challenges |
|---|---|---|---|
| Solid-state batteries | Demonstration stage; commercial viability expected 2028--2030 | Higher energy density, safer (no liquid electrolyte, reduced fire risk), faster charging | Manufacturing scale-up, high cost, interface stability issues |
| Sodium-ion batteries | Early commercialisation; CATL operating world's largest 100 MWh sodium-ion storage facility (China) | Sodium 1,000x more abundant than lithium; ~30% lower cost than LFP; works in cold temperatures | Lower energy density (~70--85% of lithium-ion); limited cycle life vs LFP |
| Lithium-sulphur | Research stage | Theoretical energy density 5x lithium-ion; sulphur is abundant and cheap | Rapid capacity fade; polysulphide shuttle effect |
India's Lithium Resources
| Feature | Detail |
|---|---|
| Discovery | 13 February 2023 -- Geological Survey of India (GSI) announced discovery of 5.9 million tonnes of lithium ore in Salal-Haimana area, Reasi district, Jammu & Kashmir |
| Significance | India's first major lithium find; valued at ~USD 410 billion; could reduce import dependence for battery raw materials |
| Classification | G3 level (inferred resources) — the lowest confidence category; requires further exploration to confirm commercially viable quantities |
| Auction status | First auction (Nov 2023) failed — no bidders at G3 level; second attempt also failed; Ministry of Mines directed G2-level re-exploration by GSI (expected by January 2026); actual commercially extractable reserves may be lower than 5.9 MT |
| Challenges | Insufficient exploration data deterring private bidders; hard-rock pegmatite extraction more costly than brine deposits (Chile/Argentina); environmental concerns (Chenab River proximity); security challenges in J&K |
| Other sources | Smaller lithium deposits reported in Karnataka and Rajasthan; India also exploring partnerships for lithium sourcing from Argentina, Chile, Australia |
Battery Recycling
| Aspect | Detail |
|---|---|
| Why | EV batteries have a lifespan of 8-10 years; millions of spent batteries will need recycling; lithium, cobalt, nickel are finite and expensive |
| India's framework | Battery Waste Management Rules, 2022 (MoEFCC) mandate Extended Producer Responsibility (EPR) for battery producers; recycling targets set for lead-acid, lithium-ion, and other battery types |
| Second life | Spent EV batteries (retaining 70-80% capacity) can be repurposed for stationary energy storage before recycling |
For Mains: India's battery strategy faces a fundamental challenge: the country depends almost entirely on imports for lithium, cobalt, and nickel -- the critical minerals for EV batteries. The J&K lithium discovery, while promising, remains at an early exploration stage. Discuss India's options for securing battery supply chains -- domestic mining, international partnerships, recycling, and investment in alternative chemistries (sodium-ion, solid-state).
Semiconductor Manufacturing
What Are Semiconductors?
| Aspect | Detail |
|---|---|
| Definition | Materials (primarily silicon) with electrical conductivity between conductors and insulators; the foundation of all modern electronics |
| Chips (ICs) | Integrated circuits fabricated on semiconductor wafers; contain billions of transistors on a tiny chip |
| Node size | Measured in nanometres (nm) -- smaller nodes = more transistors = faster, more efficient chips; cutting-edge nodes: 3nm (TSMC, Samsung); mature nodes: 28nm and above |
| Types | Logic chips (processors), memory chips (DRAM, NAND), analog chips, power semiconductors, compound semiconductors (GaN, SiC) |
Global Semiconductor Supply Chain
| Stage | Key Players | Market Share |
|---|---|---|
| Design | Fabless companies -- Qualcomm, Apple, NVIDIA, AMD, MediaTek | US dominates design |
| Fabrication (Fabs) | TSMC (Taiwan) ~60% of global foundry market; Samsung (South Korea); Intel (US); GlobalFoundries | Taiwan + South Korea ~75% of advanced chip fabrication |
| OSAT (Assembly & Testing) | ASE (Taiwan), Amkor (US/South Korea), JCET (China) | East Asia dominates |
| Equipment | ASML (Netherlands -- monopoly on EUV lithography machines), Applied Materials, Tokyo Electron, Lam Research | Netherlands, US, Japan control equipment |
Geopolitics of Semiconductors
| Issue | Detail |
|---|---|
| Taiwan risk | TSMC produces ~90% of the world's most advanced chips; a cross-strait conflict could cripple global electronics supply |
| US-China tech war | US export controls (October 2022) restrict China's access to advanced chips, equipment (especially ASML's EUV machines), and AI accelerators; CHIPS Act incentivises domestic manufacturing |
| US CHIPS and Science Act (2022) | USD 52.7 billion for semiconductor manufacturing, R&D, and workforce development; USD 39 billion in manufacturing subsidies + 25% investment tax credit |
| EU Chips Act | EUR 43 billion to double EU's global chip production share to 20% by 2030 |
| India's opportunity | India can capture a share of the diversifying supply chain; strengths in chip design (15-20% of global semiconductor design talent works in India); weakness in fabrication |
India Semiconductor Mission (ISM)
ISM 1.0
| Feature | Detail |
|---|---|
| Notified | 21 December 2021 |
| Outlay | Rs 76,000 crore for development of semiconductor and display manufacturing ecosystem |
| Progress (May 2026) | 12 projects approved with total investment of Rs 1.64 lakh crore across 6 states |
Approved Semiconductor Projects
| Project | Location | Investment | Details |
|---|---|---|---|
| Tata Electronics + PSMC (Taiwan) | Dholera, Gujarat | Rs 91,000 crore (~USD 11 billion) | India's first semiconductor fab; partnership with Powerchip Semiconductor Manufacturing Corp (PSMC); will manufacture logic and memory chips; 20,000+ direct and indirect jobs |
| Micron Technology (OSAT) | Sanand, Gujarat | $2.75 billion | India's first commercial semiconductor facility; commercial production commenced 26 February 2026 (PM Modi inaugurated); packages DRAM and NAND flash memory |
| CG Power + Renesas + Stars Microelectronics (OSAT) | Sanand, Gujarat | Rs 7,600 crore | OSAT facility; capacity ramping to 15 million units/day; products include QFN, QFP, FC BGA, FC CSP packages; catering to automotive, consumer, 5G, industrial sectors |
| Tata Electronics (OSAT) | Morigaon, Assam | Approved 2024 | OSAT facility for chip assembly and testing |
ISM 2.0 (Budget 2026--27)
| Feature | Detail |
|---|---|
| Announced | Union Budget 2026--27 |
| Focus | Semiconductor equipment and materials manufacturing in India; designing full-stack Indian semiconductor IP; fortifying domestic and global supply chains |
| Budget | Rs 1,000 crore for ISM 2.0 in FY 2026-27; total multi-year outlay Rs 40,000 crore (Electronics Component Manufacturing Scheme included) |
| 12 projects approved | Rs 1.64 lakh crore total investment commitments across 6 states (May 2026) |
For Prelims: India Semiconductor Mission: notified December 2021; Rs 76,000 crore. Tata-PSMC fab in Dholera, Gujarat = India's first semiconductor fab. Micron OSAT in Sanand, Gujarat. CG Power OSAT in Sanand. ISM 2.0 announced in Budget 2026-27. US CHIPS Act: USD 52.7 billion (2022).
Compound Semiconductors
| Feature | Detail |
|---|---|
| What | Semiconductors made from two or more elements (unlike silicon, which is a single element); examples: Gallium Nitride (GaN), Silicon Carbide (SiC), Gallium Arsenide (GaAs), Indium Phosphide (InP) |
| Advantages | Higher electron mobility, better thermal conductivity, wider bandgap -- can operate at higher voltages, frequencies, and temperatures than silicon |
| Applications | 5G/6G communications, EV power electronics, LED lighting, solar cells, defence (radar, electronic warfare), satellite communications |
| India | ISM 2.0 includes compound semiconductor development; India's design capabilities in GaN/SiC power devices growing |
State EV Policies
| State | Key Policy Features |
|---|---|
| Delhi | EV Policy 2020: purchase incentives up to Rs 30,000 for 2Ws; road tax and registration fee waiver; scrapping incentive for old vehicles |
| Maharashtra | EV Policy 2021: demand and supply-side incentives; targets 10% EV penetration by 2025; incentives for EV manufacturing |
| Karnataka | EV & Energy Storage Policy 2017 (first state EV policy): capital subsidies for manufacturers; SGST reimbursement |
| Gujarat | EV Policy 2021: SGST reimbursement for manufacturers; interest subsidy on loans; 5% capital subsidy on fixed capital investment |
| Tamil Nadu | EV Policy 2023: 100% road tax and registration fee exemption for EVs; capital subsidy for EV manufacturing |
| Andhra Pradesh | EV Policy 2023: land allocation priority for EV manufacturers; power tariff concessions |
For Mains: India's EV transition is driven by both central schemes (PM E-DRIVE, PLI) and competitive state policies. However, the lack of harmonisation between state policies creates complexity for manufacturers. A national EV framework that aligns state incentives with central targets would accelerate adoption.
EV Market in India — Current Status
| Segment | Market Share of EVs (FY 2024-25) | Key Trend |
|---|---|---|
| 2-Wheelers | ~6% of total 2W sales | Fastest-growing EV segment; Ola Electric, TVS iQube, Ather, Bajaj Chetak leading |
| 3-Wheelers | ~55% of new 3W registrations are electric | Most electrified segment; e-rickshaws dominant in north India |
| 4-Wheelers | ~2.5-3% of total car sales | Tata Motors dominates (~65% market share); MG, Hyundai, Mahindra entering |
| Buses | ~4,000 e-buses deployed under FAME-II | PM E-DRIVE targets 14,028 more; intercity e-bus routes emerging |
| Commercial vehicles | Nascent | E-trucks for last-mile delivery; Tata, Ashok Leyland, Switch Mobility active |
Charging Infrastructure
| Aspect | Detail |
|---|---|
| Current status | Over 29,000 public EV charging stations operational in India (late 2025 — up from ~6,586 in 2023); 27,737 installed / 22,753 operational per MoP data (March 2026); concentrated in metros and tier-1 cities; target: 1.32 million stations by 2030 (ORF/NITI Aayog) |
| PM E-DRIVE allocation | 88,500 locations for EV public charging stations |
| Types | Level 1 (slow -- household AC socket); Level 2 (moderate -- AC charger, 3-8 hours); DC Fast Charging (rapid -- 30-60 minutes to 80%) |
| Battery swapping | NITI Aayog draft policy (2022) for battery-as-a-service model; especially suited for 2Ws and 3Ws; companies: Sun Mobility, Battery Smart |
| Challenges | Range anxiety, uneven geographic distribution, grid capacity in rural areas, standardisation of charging connectors |
Critical Minerals for EVs and Semiconductors
| Mineral | Primary Use | Major Producers | India's Status |
|---|---|---|---|
| Lithium | EV batteries (all lithium-ion types) | Australia, Chile, China | 5.9 Mt ore discovered in J&K (Reasi, 2023); G3 stage; smaller deposits in Karnataka, Rajasthan |
| Cobalt | EV batteries (NMC, NCA) | DRC (~70% of global supply), Indonesia, Australia | No significant domestic reserves; fully import-dependent |
| Nickel | EV batteries (NMC, NCA), stainless steel | Indonesia, Philippines, Russia | Limited reserves; KABIL (Khanij Bidesh India Ltd) set up to secure supplies from Argentina, Chile, Australia |
| Rare earth elements | Permanent magnets in EV motors, wind turbines, electronics | China (~60% of mining, ~90% of processing) | India has 5th largest reserves globally; IREL (Indian Rare Earths Limited) processes monazite; processing capacity being expanded |
| Silicon | Semiconductor wafers | China, Russia, Norway | Available domestically; but semiconductor-grade silicon (99.9999999% purity) requires advanced refining capacity |
| Gallium | Compound semiconductors (GaN) | China (~80% of global supply); byproduct of aluminium smelting | India can potentially extract from aluminium processing (NALCO, HINDALCO) |
For Mains: The geopolitics of critical minerals mirrors the geopolitics of oil in the 20th century. India's dependence on imported lithium, cobalt, and rare earths for EVs and semiconductors is a strategic vulnerability. KABIL (a joint venture of NALCO, HCL, and MECL) was set up to secure overseas mineral supplies, but India needs a comprehensive critical minerals strategy encompassing domestic exploration, international partnerships, urban mining (recycling), and investment in alternative technologies.
UPSC Relevance
Prelims Focus Areas
- BEV, HEV, PHEV, FCEV -- definitions and differences
- FAME-II: Rs 10,000 crore; 2019--2024; focused on 2W/3W
- PM E-DRIVE: Rs 10,900 crore; September 2024; replaces FAME-II
- PLI for ACC Battery: Rs 18,100 crore; 50 GWh capacity
- Lithium-ion chemistry: NMC (high energy), LFP (low cost, no cobalt), NCA (Tesla)
- J&K lithium: 5.9 million tonnes; Reasi district; GSI; February 2023
- Semiconductor: India Semiconductor Mission Rs 76,000 crore (December 2021); 12 projects approved, ₹1.64 lakh crore (May 2026)
- Tata-PSMC fab: Dholera, Gujarat; Rs 91,000 crore; India's first fab; Tata-ASML MOU signed 16 May 2026
- Micron ATMP: Sanand, Gujarat — commercial production 26 February 2026 (India's first commercial semiconductor facility)
- CG Power OSAT: Sanand, Gujarat; TSAT OSAT: Morigaon, Assam — Phase 1 commissioned April 2026
- US CHIPS Act: USD 52.7 billion (2022)
Mains Focus Areas
- India's EV transition -- policy evolution from FAME to PM E-DRIVE; challenges of charging infrastructure, grid capacity, and consumer adoption
- Battery supply chain security -- India's dependence on imported critical minerals; options (domestic mining, international partnerships, alternative chemistries, recycling)
- Semiconductor self-reliance -- India Semiconductor Mission's progress and challenges; why chip fabrication is one of the hardest manufacturing challenges
- Geopolitics of technology -- US-China tech war, Taiwan risk, and India's strategic positioning
- Environmental dimension -- EVs reduce tailpipe emissions but shift environmental burden to mining (lithium, cobalt) and electricity generation; lifecycle analysis
- Industrial policy -- lessons from East Asia's semiconductor success for India; role of government subsidies vs market forces
Cross-paper relevance
- GS3 — Science-Technology (primary) — EVs: 2.55 million units in FY26 (25% growth, 8.64% penetration — VAHAN data), PM E-DRIVE scheme, FAME-II, battery technology, EV charging infrastructure; ACC PLI execution gap (2.8% of 50 GWh commissioned, Oct 2025)
- GS3 — Economy — Industrial policy: PLI for Advanced Chemistry Cell (ACC) batteries, EV component ecosystem, EV-semiconductor nexus, critical mineral sourcing
- GS3 — Environment — Climate dimension: EV as decarbonisation tool, lifecycle emissions, mining environmental impact (lithium, cobalt), EV grid load management
- Essay — Recurring theme: "Electric vehicles: India's green mobility revolution" (2022); "Clean transport: balancing environment and energy security" (2023)
Recent Developments (2024–2026)
India EV Sales 2024 — 1.94 Million Units, 27% Growth
India's electric vehicle market recorded 1.94 million units in 2024 (CY), a 26.5% year-on-year increase from 1.5 million units in 2023, with EV penetration rising to 7.46% of total vehicle sales. Two-wheelers dominated with ~60% share (1.2 million units, 30% growth), while three-wheeler cargo segment grew 45% driven by e-commerce logistics. Electric cars reached 99,848 units. October 2024 saw peak monthly sales of 2,19,482 units, coinciding with festive demand and the launch of the PM E-DRIVE scheme.
The PM Electric Drive Revolution in Innovative Vehicle Enhancement (PM E-DRIVE) scheme was launched on 1 October 2024, with a budget of ₹10,900 crore. Originally valid to 31 March 2026, the Ministry of Heavy Industries extended it to 31 March 2028 (August 2025) for e-buses, e-trucks, e-ambulances, and EV public charging stations; e-2W and e-3W subsidies concluded on 31 March 2026 as originally planned. The scheme provides demand incentives for two-wheelers (₹5,000/kWh subsidy, capped at ₹10,000/vehicle), three-wheelers, e-buses, and e-ambulances — replacing the earlier FAME II scheme which lapsed in March 2024.
India's cumulative EV fleet crossed 6 million units by end of FY 2025-26, while charging infrastructure has rapidly expanded — over 29,000 public EV charging stations as of late 2025 (Ministry of Power data), up from ~6,586 in 2023, though still far short of the estimated 1.32 million stations needed for 30% EV penetration by 2030. The NITI Aayog report (August 2025) identified India's EV market as a $200 billion opportunity by 2030.
UPSC angle: PM E-DRIVE scheme (₹10,900 crore, October 2024), EV sales crossing 1.94 million in 2024, 7.46% penetration, and the transition from FAME II to PM E-DRIVE are Prelims and Mains GS-3 content on technology/industry policy.
India Semiconductor Mission — 12 Projects, ₹1.64 Lakh Crore Pipeline (May 2026)
India's semiconductor ecosystem saw historic milestones in 2024–2026. The India Semiconductor Mission (ISM), established under the Modified Programme for Semiconductors and Display Fabs (December 2021) with a ₹76,000 crore government outlay, approved 12 semiconductor projects totalling ₹1.64 lakh crore investment (May 2026). The Tata Electronics-PSMC fabrication plant at Dholera (Gujarat) — India's first commercial chip fab — received bhumi pujan in March 2024, targeting 28nm process nodes and 50,000 wafers/month capacity; construction is ~50% complete (May 2026); Tata-ASML MOU signed 16 May 2026 for lithography support. Micron ATMP in Sanand began commercial production 26 February 2026 — India's first commercial-scale semiconductor facility. TSAT in Jagiroad, Assam commissioned Phase 1 in April 2026 — first semiconductor chip packaging in Northeast India.
Two new Cabinet-approved projects (May 2026): Crystal Matrix Ltd (GaN/Mini-LED compound semiconductor fab, Dholera) and Suchi Semicon Pvt Ltd (OSAT, Surat) — ₹3,936 crore combined.
The Design Linked Incentive (DLI) scheme awarded contracts to 23 semiconductor design companies by December 2024, targeting 300+ chip designs and 25,000+ trained chip design engineers by 2026.
UPSC angle: ISM milestones — 12 projects (May 2026), ₹1.64 lakh crore, Micron commercial production (Feb 2026), TSAT Phase 1 (Apr 2026), Tata-ASML MOU (May 2026), Tata-PSMC construction 50% (May 2026) — are high-probability Prelims 2027 data points. DLI scheme and semiconductor self-reliance strategy are Mains GS-3 content.
Battery Technology and Critical Minerals — India's Strategic Push 2024
The Battery Waste Management Rules 2022 entered full implementation in 2024, mandating Extended Producer Responsibility (EPR) for EV battery manufacturers — requiring 25% collection and recycling by FY25 rising to 60% by FY28. India's lithium-ion battery recycling market grew to ₹5,000+ crore by 2024 driven by EV battery end-of-life volumes. India's first lithium reserve discovered in Reasi, J&K (5.9 million tonnes, largest in Asia) by GSI in February 2023 remains under exploration — no commercial extraction yet.
India joined the Minerals Security Partnership (MSP) in June 2023, gaining access to critical mineral supply chains. KABIL (Khanij Bidesh India Ltd), the joint venture of NALCO, HCL, and MECL, signed exploration agreements for lithium and cobalt in Argentina and Australia. The Critical Minerals List (2023) identifies 30 minerals — lithium, cobalt, graphite, nickel, gallium, germanium — as critical for EV, semiconductor, and defence supply chains. India's domestic sodium-ion battery research progressed at IIT Madras and ISRO's VSSC, positioning India for an alternative to lithium dependence.
UPSC angle: Battery Waste Management Rules 2022 (EPR, recycling targets), KABIL overseas critical mineral acquisitions, J&K lithium deposit (5.9 MT), and India's Critical Minerals List 2023 are Prelims and Mains GS-3 content.
India EV Sales FY 2025–26 — 2.55 Million Units, 8.64% Penetration (April 2026)
India's EV sales reached 25,50,865 units (2.55 million) in FY 2025–26, a 25.0% increase over FY 2024–25, with overall EV penetration rising to 8.64% of total vehicle registrations (VAHAN/EVreporter data). Electric two-wheelers dominated at 14,72,029 units (57.7% of total EV sales), led by TVS Motor, Bajaj Auto, and Hero MotoCorp. Electric passenger cars (E4W) surged 91.3% year-on-year to 1,93,633 units — EV penetration in the 4W segment crossed 4.6%. Electric passenger three-wheelers (L5) reached 33.7% EV penetration. India's cumulative EV fleet crossed 6 million units by end of FY26.
The PM E-DRIVE scheme's deadline extensions for two-wheeler and three-wheeler EVs supported sustained demand growth. Projections for FY 2026–27 target 9.5–10% EV penetration. The NITI Aayog's Electric Vehicle Market Development Roadmap projects India as the world's third-largest EV market by 2030, with annual sales of 8+ million units.
Note on PLI ACC Battery Scheme progress: As of October 2025, only 1.4 GWh (2.8% of the targeted 50 GWh) had been commissioned within the stipulated timeline — all by Ola Electric — and no incentive disbursements had been made against the ₹18,100 crore outlay (IEEFA report, January 2026). Key challenges: stringent domestic value addition requirements, aggressive timelines, visa delays for Chinese technical specialists. Ola Electric's gigafactory operates at 2.5 GWh capacity (May 2026) with expansion to 6 GWh under way. Reliance New Energy (15 GWh allocated — 5 GWh original + 10 GWh September 2024 round) is the only company indicating on-time commissioning for its tranche.
UPSC angle: FY26 EV VAHAN data (25.5 lakh units, 8.64% penetration), E4W surge (91.3% growth, 4.6% penetration), PM E-DRIVE extension, and ACC PLI slow execution (2.8% commissioned, no disbursements as of Oct 2025) are Prelims 2027-ready data; EV transition trajectory, battery supply chain, and PLI implementation gaps are Mains GS-3 themes.
Vocabulary
Key Terms
Photovoltaic Effect
- Definition: The photovoltaic (PV) effect is the physical phenomenon by which a material generates a voltage and electric current when exposed to light, by absorbing photons that free charge carriers which are then separated by an internal electric field. It is the operating principle of solar cells, distinct from the photoelectric effect because the freed electrons remain within the material rather than being ejected into vacuum.
- Context: The effect was first observed by the French physicist Alexandre-Edmond Becquerel in 1839, when he found that light falling on an electrode in an electrolyte produced an electric current. Modern solar cells exploit this effect using a semiconductor p-n junction (commonly silicon), where incident photons excite electrons from the valence band to the conduction band, creating electron-hole pairs that the junction's built-in field separates to drive a current. The PV effect underpins India's solar mission, which is central to its renewable-energy and climate commitments.
- UPSC Relevance: This is a foundational science-and-technology concept underpinning UPSC questions on renewable energy, semiconductors, and India's energy transition. For Prelims, candidates should distinguish the photovoltaic effect from the photoelectric effect and link it to schemes like PM Surya Ghar: Muft Bijli Yojana and India's non-fossil capacity targets. For Mains (GS3), it connects to energy security, climate goals (Panchamrit/Net Zero 2070), and indigenous solar manufacturing under Atmanirbhar Bharat. No verified PYQ exists for this exact term, but it supports the broader question family on renewable energy and clean-tech.
Galvanic Cell
- Definition: A galvanic cell (also called a voltaic cell) is an electrochemical cell that converts the chemical energy of a spontaneous redox reaction into electrical energy. It consists of two half-cells — an anode where oxidation occurs and a cathode where reduction occurs — connected externally by a wire and internally by a salt bridge.
- Context: The concept traces back to Luigi Galvani's experiments on frog muscles (begun around 1780, published 1791) and Alessandro Volta's invention of the voltaic pile in 1800 — the first true battery. John Frederic Daniell made the classic zinc–copper Daniell cell public in 1836, providing the first reliable, steady source of electric current that powered early telegraphy. Today the galvanic principle underlies all commercial batteries — from dry cells to the lithium-ion cells recognised by the 2019 Nobel Prize in Chemistry — making it central to India's electric mobility and energy-storage ambitions.
- UPSC Relevance: This is a foundational concept — it underpins Prelims and Mains (GS3) questions on batteries, lithium-ion technology, electric vehicles, fuel cells, hydrogen energy and energy storage, areas UPSC tests through applied science questions rather than textbook chemistry. Prelims may test the anode/cathode distinction, electron-flow direction, or how a galvanic cell differs from an electrolytic cell. For Mains, the concept feeds into answers on battery storage, the National Green Hydrogen Mission and EV supply chains.
Betz Limit
- Definition: The Betz Limit is the theoretical maximum fraction of the kinetic energy of wind that any open-rotor wind turbine can convert into mechanical energy — 16/27, or about 59.3% — derived by German physicist Albert Betz in 1919 using one-dimensional momentum (actuator disc) theory.
- Context: The limit arises because a turbine cannot extract all the wind's energy: if air were brought to a complete stop at the rotor, fresh air could not flow through and power output would fall to zero. Maximum extraction occurs when the wind leaving the rotor slows to exactly one-third of its upstream speed. The same result was independently derived by Frederick Lanchester (1915) and Nikolai Joukowsky (1920), so it is also called the Lanchester–Betz–Joukowsky limit. Modern utility-scale turbines achieve peak power coefficients of roughly 0.45–0.50, i.e. about 75–80% of the Betz Limit.
- UPSC Relevance: For Prelims, the Betz Limit is a foundational science concept — it underpins factual and conceptual questions on wind energy, renewable-energy efficiency and energy-technology basics under GS Paper III (Science & Technology, Infrastructure–Energy). For Mains, it helps candidates explain why wind turbines have inherent efficiency ceilings, why capacity factors of wind farms are low, and why siting, hub height and offshore wind matter — useful in answers on India's renewable energy transition (wind capacity 56.09 GW as of 31 March 2026, fourth globally; 100 GW target by 2030).
Solid-State Battery
- Definition: A solid-state battery is a rechargeable battery that uses a solid electrolyte (typically a ceramic, glass, or polymer compound) to conduct ions between the electrodes, replacing the flammable liquid or gel electrolyte and the separator used in conventional lithium-ion batteries.
- Context: Conventional lithium-ion cells rely on a liquid electrolyte that is energy-dense but flammable and prone to thermal runaway. Solid-state batteries (SSBs) swap this for a solid ion-conducting medium, which can enable higher energy density, faster charging, longer life and far better safety, and which makes a pure lithium-metal anode viable. As of 2025-26 the technology remains largely pre-commercial: firms such as Toyota, QuantumScape and Solid Power have prototypes, with the most ambitious passenger-EV launches targeted around 2027-2030. In India, the relevance is amplified by near-total import dependence on battery cells and a drive for self-reliance in critical minerals.
- UPSC Relevance: This is a foundational science-and-technology and energy-security concept under GS3 (developments in S&T, indigenisation of technology, energy). UPSC typically tests it indirectly through the broader topic family of EV adoption, energy storage, critical-mineral dependence and India's manufacturing missions (PLI-ACC, National Critical Mineral Mission) rather than as a standalone factual question. Prelims-style angles include the basic distinction (solid vs liquid electrolyte, role of the lithium-metal anode), while Mains can frame it within fiscal/strategic dependence on imported cells and minerals, and India's clean-energy transition. There is no verified direct PYQ on this exact term; it underpins recurring questions on battery technology, e-mobility and supply-chain resilience.
India Semiconductor Mission (ISM)
- Pronunciation: /ˈɪndiə ˌsɛmikənˈdʌktər ˈmɪʃən/
- Definition: India's national programme notified on 21 December 2021 with an outlay of Rs 76,000 crore to develop a comprehensive semiconductor and display manufacturing ecosystem -- covering chip fabrication, OSAT (assembly and testing), chip design, compound semiconductors, and sensor fabrication -- with fiscal support of up to 50% of eligible capital expenditure for approved projects.
- Context: As of May 2026, 12 projects worth Rs 1.64 lakh crore have been approved (12th project: Suchi Semicon OSAT Surat and Crystal Matrix GaN fab Dholera, Cabinet approval May 2026), including India's first semiconductor fab (Tata-PSMC in Dholera, Gujarat — Tata-ASML MOU 16 May 2026) and OSAT facilities by Micron (commercial production 26 February 2026), CG Power in Sanand, and TSAT in Morigaon, Assam (Phase 1 April 2026); ISM 2.0 was announced in Budget 2026-27 focusing on equipment, materials, and full-stack Indian semiconductor IP.
- UPSC Relevance: GS3 (Science & Technology, Economy). Prelims: outlay (Rs 76,000 crore), key projects (Tata-PSMC, Micron, CG Power), locations (Dholera, Sanand). Mains: semiconductor self-reliance, geopolitics of chip supply chains, comparison with US CHIPS Act and EU Chips Act.
PM E-DRIVE
- Pronunciation: /piː ɛm iː draɪv/
- Definition: PM Electric Drive Revolution in Innovative Vehicle Enhancement -- India's flagship scheme for electric vehicle adoption, approved on 11 September 2024 with an outlay of Rs 10,900 crore, replacing FAME-II; provides demand incentives for e-2Ws, e-3Ws, e-trucks, e-ambulances, and e-buses, along with dedicated funding for 88,500 EV public charging station locations. Extended to 31 March 2028 (August 2025) for e-buses, e-trucks, e-ambulances, and charging infrastructure.
- Context: PM E-DRIVE represents a shift from FAME-II's narrower focus to a broader EV ecosystem approach, including freight vehicles and emergency services; India's 4W EV penetration crossed 4.6% in FY26 (from below 3% in FY25), while 2W EV penetration reached 6.6% of total 2W sales.
- UPSC Relevance: GS3 (Science & Technology, Environment, Economy). Prelims: outlay (Rs 10,900 crore), approval (September 2024), replaces FAME-II, coverage (24.7 lakh e-2Ws). Mains: India's EV transition strategy, charging infrastructure challenges, environmental benefits vs lifecycle costs.
Sources: pib.gov.in (IndiaAI Mission, PM E-DRIVE, India Semiconductor Mission, PLI for ACC Battery, Lithium discovery), Ministry of Heavy Industries (FAME-II, PM E-DRIVE), India Semiconductor Mission (ism.gov.in), Tata Electronics (PSMC partnership), Micron Technology, CG Power (OSAT announcement), US Congress (CHIPS and Science Act 2022), European Commission (EU Chips Act), GSI (lithium discovery, February 2023), MoEFCC (Battery Waste Management Rules 2022), IRENA (sodium-ion batteries technology brief, 2025)
