Indian Railways Electrification: How India Wired Its Railways, From One 16-km Line in 1925 to 99.6% in 2026

99.6%: the last 269 route km Mission mode

The ministry told Parliament that 70,002 of 70,271 route km of broad gauge were electrified by 31 May 2026. What remains, 269 route km, is in five states: Karnataka 120, Tamil Nadu 68, Assam 55, Goa 16 and Rajasthan 10. The ministry listed forest clearances, shifting utilities, statutory approvals, terrain, law and order and short working seasons as the reasons the final stretches take longest.

Why it matters: the network is not quite ‘100% electric’, and the last kilometres are the hardest: ghats, forests and border areas.

Western freight corridor finished; 99.6% reached Trunk route

Trial container trains ran on the last 102-km JNPT–Vaitarna stretch on 31 March 2026, completing the 1,506-km Western Dedicated Freight Corridor from Jawaharlal Nehru Port to Dadri. Its final commissioning had been held up by signalling and overhead-wire work. The same month the electrified share of broad gauge reached 99.6%, or 69,873 of 70,142 route km. Chittaranjan Locomotive Works closed 2025–26 with a record 603 electric locomotives.

Why it matters: both freight corridors are now electric end to end, built for heavy, double-stack trains that only high-power electric traction can move efficiently.

99.2%, and the renewables push Energy

A ministry reply put electrification at 99.2% of broad gauge, 69,427 route km by November 2025, with 14 of 18 zones and 25 states and Union Territories at 100%. It also published the split that defines the story: 21,801 route km before 2014 and 46,900 route km in 2014–25. Separately, the railways said it had commissioned 812 MW of solar and 93 MW of wind for traction and tied up 1,600 MW of round-the-clock hybrid renewable power, toward a goal of becoming a net-zero carbon emitter by 2030.

Dahod: India’s first 9,000 HP locomotive plant Locomotives

Prime Minister Narendra Modi dedicated the railway’s locomotive plant at Dahod, Gujarat, and flagged off its first 9,000 horsepower electric freight locomotive. The Siemens Mobility contract covers 1,200 locomotives, each able to haul about 5,800 tonnes at up to 120 km/h, with propulsion parts made in Nashik, Aurangabad and Mumbai.

500th WAG-12B leaves Madhepura Locomotives

Alstom delivered the 500th of 800 WAG-12B locomotives from the Madhepura joint-venture factory. At 12,000 horsepower in two sections, it is India’s most powerful locomotive, built to haul about 6,000-tonne freight trains at up to 120 km/h.

The pace drops as the map fills in Mission mode

Electrification fell to 2,701 route km in 2024–25 from a record the year before, simply because most of the network was done. The ministry says the electrified share passed 96% by the end of 2024. All new lines and doubling projects are now sanctioned with electrification included.

A second deadline passes Missed target

In April 2021 the ministry said it planned to fully electrify its tracks by December 2023, after the 2018 Cabinet approval had set 2021–22. Both dates passed with work remaining. The gap was small, but the final few thousand kilometres ran through forests, ghats and the north-east, where approvals and working seasons set the pace.

Why it matters: nearly 100% is a real achievement, but the official targets were missed twice.

Record year: 7,188 route km Mission mode

Indian Railways electrified a record 7,188 route km in 2023–24, after 6,565 km in 2022–23 and 6,366 km in 2021–22, roughly 20 km of line every working day. Along the way Uttar Pradesh and the North Eastern Railway became fully electrified on 20 February 2023, Meghalaya was linked by electric traction on 15 March 2023, and the Bengaluru–Hubballi main line was wired end to end on 31 March 2023.

6,015 route km in a pandemic year Mission mode

Despite COVID-19, the railways electrified 6,015 route km in 2020–21, beating the previous best of 5,276 km in 2018–19, and commissioned a record 56 traction substations. By 31 March 2021, 45,881 of 64,689 route km (71%) were electrified. The ministry tied full electrification to its goal of being a net-zero carbon emitter by 2030, drawing traction power from renewables. On 18 May 2020 the first WAG-12B made its maiden commercial run, from Pt Deen Dayal Upadhyaya Junction to Shivpur.

Cabinet approves Mission 100% Electrification Mission mode

The Union Cabinet approved electrifying the remaining 13,675 route km of broad gauge, about 108 sections, at an estimated ₹12,134 crore, with the aim of a fully electric broad-gauge network by 2021–22. The policy question changed from ‘which route next?’ to ‘how fast can the rest be done?’.

Why it matters: branch lines that would never have passed a traffic-based test were now included, which is why the electrified share climbed so fast after 2018.

The real acceleration begins Mission mode

Although 2014 is often cited as the turning point, the step change came in 2017–18, when annual electrification jumped to 4,087 route km. From 2014–15 to 2016–17 it had averaged roughly 1,400 route km a year, already more than double the 2007–14 average of about 620. In April 2018 the Madhepura factory turned out its first WAG-12 locomotive.

Mumbai switches from DC to AC 25 kV AC

The city where Indian electric traction began was the last to give up DC. Mumbai’s 1,500 V DC suburban network was converted to 25 kV AC section by section: Western Railway completed the switch on 5 February 2012, Central Railway’s last main-line sections on 8 June 2015, and the Harbour line, home of the 1925 first train, in 2016.

Why it matters: AC allowed longer, faster, more energy-efficient local trains on the world’s most crowded suburban network.

The last trunk-route gaps close Trunk route

Prime Minister Atal Bihari Vajpayee inaugurated the electrified Howrah–Delhi route via Patna on 3 February 2002. On 29 November 2005, closing the Kharagpur–Waltair gap completed the Howrah–Chennai route. In July 2008 the railways trialled a 7.45-metre-high contact wire between Jakhapura and Tomka, then the world’s highest, for double-stack container trains.

WAP-7 arrives; a quarter of track is electric Locomotives

Chittaranjan Locomotive Works built the first WAP-7, a three-phase passenger locomotive derived from the ABB-designed WAG-9 freight engine imported from 1996. It became the standard express locomotive across India. According to the ministry, electrified track was about 24% of the network in 2000.

The Golden Quadrilateral goes electric Trunk route

Trunk routes were commissioned one after another: Delhi–Bombay via Western Railway (1,388 route km) on 31 March 1987, Howrah–Bombay (1,976) on 31 January 1991, Delhi–Chennai (2,190) on 31 March 1991 and Delhi–Bombay via Central Railway (1,542) on 31 January 1992. In 1994–95 India commissioned its first 2 x 25 kV autotransformer system on the Bina–Katni and Katni–Bishrampur coal routes.

Delhi–Howrah: the first electric trunk route Trunk route

The Delhi–Howrah route, the busiest corridor linking the capital to Kolkata and the eastern coalfields, was commissioned with electric traction end to end. It set the pattern for the next 30 years: electrify the densest trunk and freight routes first, where locomotives work hardest.

Kolkata’s 3,000 V DC converted to AC 25 kV AC

The Howrah–Burdwan and Sheoraphulli–Tarakeswar lines, electrified on 3,000 V DC in 1954–58, were converted to 25 kV AC in 1966 and 1968. With that, every system outside Bombay and Madras was on the single national standard.

‘Lokmanya’: the first Indian-built electric locomotive Locomotives

Jawaharlal Nehru inaugurated Lokmanya, the first 1,500 V DC electric locomotive built at Chittaranjan, for the Bombay area. India introduced its first indigenous electric multiple units in September 1962. Domestic manufacture would later make the mass electrification of the 2010s possible without large-scale imports.

First 25 kV AC section energised 25 kV AC

Three years after choosing AC, India energised its first 25 kV section on an iron-ore route in the eastern mineral belt. Heavy mineral trains running all day were exactly the traffic that repaid the cost of wires and substations. A dedicated electrification project, later the Central Organisation for Railway Electrification (CORE), took charge of new schemes.

India adopts 25 kV AC 25 kV AC

In 1955 SNCF had shown that 25 kV single-phase AC at the 50 Hz grid frequency needed far fewer substations than DC. Indian Railways adopted it in 1957, initially with SNCF as consultants. The decision came just as Kolkata’s 3,000 V DC lines opened: Nehru inaugurated Howrah–Sheoraphulli EMU services on 14 December 1957.

Why it matters: one national standard, chosen early, is what let India later wire tens of thousands of kilometres with the same design.

388 route km at Independence DC era

After two decades, India had just 388 route km electrified, around Bombay and Madras. Steam hauled almost everything else, and diesel had not yet arrived.

Electric traction spreads from the Harbour line DC era

The Bombay, Baroda and Central India Railway electrified its suburban line from Colaba to Borivali in January 1928. In 1930 the GIPR opened electric working on the Kalyan–Poona main line over the steep Bhor Ghat, where electric locomotives could haul heavier loads uphill than steam. Madras followed on 15 November 1931 with Beach–Tambaram on metre gauge.

India’s first electric train DC era

The Great Indian Peninsula Railway ran India’s first electric train from Bombay Victoria Terminus to Kurla on the Harbour branch, inaugurated by the Governor of Bombay, Sir Leslie Wilson. It used 1,500 V DC from overhead wires and British-built motor coaches. Frequent, crowded suburban trains that started and stopped every few minutes were the ideal first use.

Why it matters: every one of today’s 70,000-plus electrified route km traces back to this 16-km line.