It’s 6 a.m. on a chilly January morning in 2002 in New Delhi. It’s nonetheless darkish outdoors, and I’m within the kitchen making ready breakfast, packing lunches, and getting my two youngsters able to catch the college bus when, for the third time in per week, the ability goes out. No lights, no mixer to complete my daughter’s puttu—her favourite rice dish—no kettle, no toaster. The toilet is darkish, and the children are upset.
It should most likely be hours earlier than the ability comes again on, so I seize a flashlight and lightweight the candles which can be arrange round the home for these events. We’re delayed now. We pack the meals we have now, bundle up as the home turns chilly, and head outdoors, leaving a large number within the kitchen. We make our strategy to the bus cease at nighttime—the streetlights are out, too—solely to find my daughter has missed her journey. Once more. I’ll be late for work at Jamia Millia Islamia, a college the place I’m a professor {of electrical} engineering and educate energy techniques and sensible grids. I simply hope the ability is on there.
This was a typical scene for my household and all of Delhi within the early 2000s. Energy outages occurred virtually day by day and lasted hours. When the ability was on, the standard was so poor that it will dim lights, flicker screens, and wreak havoc on home equipment. Customer support on the energy utilities basically didn’t exist.
A toddler walks in July 2007 previous a retailer in New Delhi specializing in reconditioned mills. The worry of energy cuts throughout summer time warmth spurs demand for these mills in order that residents can produce their very own energy.Nicholas Bradley/AFP/Getty Pictures
These issues had been getting worse via the Nineteen Eighties and Nineties. The trigger: an growing older distribution grid bereft of essential applied sciences, and electrical energy suppliers with little accountability. The state of affairs grew to become so dangerous that the town was dropping greater than half of its energy via out of date tools and theft. These staggering losses meant that utilities bought paid for less than a fraction of the electrical energy they had been making an attempt to ship. And the shortage of funds prevented them from investing in higher grid infrastructure.
However over the past quarter century, a exceptional effort by the federal government and the town’s distribution utilities has turned Delhi’s grid right into a dependable, fashionable system. Energy losses have shrunk from over 50 p.c in 2002 to five to six p.c in 2026—on par with France and Belgium, and higher than Greece and Serbia. Delhi’s grid reliability index, a measure of how typically electrical energy may be counted on, stood at round 70 p.c in 2002 and has now topped 99.9 p.c.
The bustling Important Bazar within the Paharganj neighborhood of Delhi more and more makes use of extra nighttime electrical energy, however reductions in electrical energy loss assist counter demand. iStock
With dependable energy, companies throughout the town have blossomed. The streetlights are vibrant. The variety of electrical automobiles, together with metropolis buses, is rising day by day. High quality of life has improved. At the moment, my household is comfy year-round in our house regardless of Delhi’s scorching summers and chilly winters. The chaos of dropping energy not hinders me from attending to work. The town nonetheless has issues—air pollution, overcrowding, noise—however fortunately, dependable energy is not amongst them.
The transformation of Delhi’s grid can function a mannequin for different cities that endure from decrepit energy infrastructure. Areas of Albania, Argentina, Bangladesh, Brazil, Estonia, India, Kenya, Pakistan, Sri Lanka, Uganda, and Venezuela are reeling from heavy losses in their distribution grids. Their issues seem like Delhi’s 25 years in the past. I imagine it’s attainable to enhance electrical energy in these locations by adapting the modifications Delhi made. Right here’s an inside have a look at how the town achieved it.
Delhi’s Energy Grid and Vitality Combine
The town of Delhi hosts the capital of the Republic of India, and sits alongside the Yamuna River within the northern a part of the nation. It’s house to about 23 million individuals and is among the most densely populated areas on this planet. Delhi’s grid contains hundreds of kilometers of energy strains, and peak electrical energy demand reached an all-time excessive this 12 months of 8,748 megawatts. The town presently buys 76 p.c of its energy from central producing corporations and personal gamers from neighboring states. Vitality era inside the metropolis is restricted to pure gasoline and renewable sources. Practically 48.5 p.c of the town’s energy comes from coal, about 26.5 p.c from pure gasoline, and the remainder from carbon-free sources, led by hydropower at 15.6 p.c.
Tata Energy-DDL changed about 5 kilometers of overhead strains with underground cables, which lowered electrical energy loss and improved the aesthetics of Delhi’s streets, such because the Janta Flats within the Shalimar Bagh neighborhood.Tata Energy-DDL
By the early 2000s, Delhi’s practically 100-year-old energy distribution system was in severe disrepair. All the pieces was previous—strains, transformers, circuit breakers, switches. New grid applied sciences had been wanted to maintain up with new sorts of electrical energy hundreds, however there was little cash to improve parts.
The shabby state of the grid brought on many issues, most notably excessive electrical energy losses, the place electrical energy vanishes primarily as warmth. The reason for the losses was a basic electrical drawback: an excessive amount of present flowing via a community that wasn’t designed to hold it effectively.
To grasp the issue, it helps to grasp how fashionable power grids work. Sometimes, they embody era, transmission, and distribution. After energy is generated, transformers convert the electrical energy to excessive voltage ranges—usually 132, 220, 400, or 765 kilovolts in India. Transmission strains then carry the ability over lengthy distances to receiving substations which can be nearer to the place clients want electrical energy. Transformers then step down the voltage (to 66, 33, or 11 kV in India) and distribution strains department out, carrying the ability to clients. The entire grid works totally on alternating present.
Distribution networks carry each energetic and reactive energy. Lively energy is the power used to carry out helpful work (and is measured in watts). Reactive energy is the ability that flows forwards and backwards in an electrical circuit, constructing electrical and magnetic fields (measured in volt-ampere-reactive, or VAR). Though it doesn’t carry out helpful work, reactive energy is important for a lot of units, corresponding to induction motors, transformers, and computer systems (usually any circuit or system with inductance or capacitance components).
When there are a variety of units consuming reactive energy on the identical line, the general present carried by the road—the sum of the energetic and reactive present—should enhance. The extra present within the line, the extra the road heats up and the extra power that’s wasted as warmth.
Along with present, resistance within the line will enhance losses as effectively. Resistance is when electrons encounter opposition as they transfer via the conductive materials (usually aluminum in an influence grid). Longer strains with many branches and connection factors will enhance resistance. The rule of thumb is that line loss equals the sq. of the present multiplied by the resistance.
Reactive energy creates a second drawback: It causes the voltage alongside the road to drop. And when the voltage falls, many fashionable electrical units attempt to preserve roughly the identical degree of efficiency by drawing extra present. That larger present produces even larger losses within the line and causes the voltage to fall additional.
In a wholesome grid, the utility will take compensatory measures to decrease the present and preserve the voltage all the best way to the ends of the strains. However in Delhi, this wasn’t occurring. The end result was a vicious cycle. Reactive hundreds elevated the present, the upper present elevated power losses and lowered the voltages, decrease voltages compelled units to attract extra present and additional elevated the losses.
In some components of Delhi, the impact was so extreme that residents took issues into their very own fingers. A colleague of mine who lived in a unique a part of the town continually skilled voltage that was too low for her home equipment to function reliably, so she needed to set up her personal voltage stabilizer. At my house, we purchased an inverter and battery system to maintain a fan and some lights working through the many outages.
Electrical energy Loss and Theft in Delhi
The losses in Delhi weren’t brought on solely by technical issues. Theft of electrical energy was rampant, by each the highly effective and the powerless (in each senses of the phrase). Companies, residential clients, and utility workers with vested pursuits would siphon electricity from the grid. It was straightforward to illegally hook right into a streetlight or a distribution line working shut to 1’s home or manufacturing facility. Utilities didn’t have the sources to establish theft or penalize offenders. Even when they might, the courts had been already overburdened, and an electrical energy regulatory fee that would push for reforms had not but absolutely shaped.
Up to date meters have made billing simpler and extra correct. Tata Energy-DDL
Making issues worse, the utilities and their workers had been not often held accountable for his or her actions, and so corruption plagued the system. Junior engineers and line staff, lots of them missing applicable technical abilities, had been tasked with dealing with practically each situation, together with outages, flickering, and invoice fee. This was an excessive amount of authority within the fingers of individuals with too little coaching.
On prime of that, clients didn’t pay their payments. Meters had been previous, incessantly defective, and simply tampered with. Utility workers would take a meter studying by visiting the client’s property, noting the studying in a e-book, coming into it in a ledger or on a pc again on the workplace, and changing it into an electrical energy invoice that will get dropped off on the buyer’s property. This course of left a variety of room for incorrect billing.
To pay a invoice, clients needed to stand in lengthy queues on the utility workplaces, which had restricted enterprise hours. Not eager to take off a half day of labor for this, many purchasers merely didn’t pay. And there was no penalty for not paying—there have been no rules permitting the utilities to chop off a buyer’s energy. (I paid my invoice by having a member of the family stand in line for me.)
The mixed industrial and technical losses left Delhi’s utilities gathering fee for lower than half of the electrical energy they had been supplying within the early 2000s.
India’s Electrical energy Act and Energy Reforms
Such issues weren’t distinctive to Delhi. On common in 2002, state utilities throughout India skilled electrical energy losses of practically 37 p.c. My nation desperately wanted systemic reforms, however authority over electrical energy was break up between the central and state governments so any decision-making was fractured. States managed many of the era, in addition to transmission and distribution, whereas the central authorities oversaw era that equipped a number of states, corresponding to hydropower, fossil gasoline vegetation, and nuclear vegetation. The central authorities may push reforms, however the states decided whether or not these reforms would succeed. Making issues worse, most states put a single group in control of era, transmission, and distribution, giving that entity an excessive amount of management and lowering transparency and competitors.
A staff of technicians with BSES Rajdhani Energy maintains an insulator string on a big energy transformer in 2011. BSES Rajdhani Energy
In 2001, India’s central authorities started writing some historic laws that grew to become the landmark Electricity Act, 2003. Among the many grand reforms aimed toward reworking the nation’s energy business, it unbundled state oversight of grid networks, creating separate entities for era, transmission, and distribution. It additionally opened up the ability sector to privatization. It allowed giant electrical energy clients to bypass native distribution corporations and buy electrical energy from rivals or construct their very own energy vegetation. It created a central regulatory company chargeable for figuring out interstate tariffs and selling market competitors within the energy sector. And it created mechanisms for prosecuting electrical energy theft.
Lots of of capacitor banks have been put in in Delhi to produce reactive energy at strategic areas and assist stabilize voltage.Tata Energy-DDL
In 2002, Delhi was already taking drastic motion to repair its grid. The group overseeing Delhi’s distribution, the Delhi Vidyut Board, was damaged up and two personal corporations—BSES (now a part of Reliance Infrastructure), and North Delhi Energy Restricted (now generally known as Tata Power-DDL)—took over distribution. They confronted a Herculean job. Tata Energy-DDL, serving the northern half of Delhi, must sort out a mixed industrial and technical electrical energy lack of 53.5 p.c. BSES, whose territory was break up between two subsidiaries, was going through 51.5 p.c losses in South Delhi and 63.1 p.c losses in East Delhi.
“The corporate inherited a deteriorated and overloaded community, huge energy theft, weak billing and assortment techniques, inaccurate shopper data, and an growing older, largely untrained workforce,” Dwijadas Basak, CEO of Tata Energy-DDL, advised me. There have been over 100,000 unresolved billing complaints, 20,000 pending connection purposes, and frequent provide failures, which had severely eroded shopper belief, he added. Each Tata Energy-DDL and BSES devised sweeping reforms and human useful resource growth initiatives. The businesses adopted their very own paths through the years, however finally applied comparable modifications, with comparable outcomes.
Delhi’s Electrical energy System Overhaul
Fixing Delhi’s grid was a journey that concerned all stakeholders, together with clients, metropolis authorities, and utility workers in any respect ranges. The utilities revamped their organizational buildings, diminishing the ability of junior employees and creating separate groups to give attention to particular duties. Lengthy-term workers of the erstwhile Delhi Vidyut Board obtained coaching from the up-and-comers on the new corporations.
On the technical facet, each corporations put in digital control systems that allow them monitor and function the grid from a central location. Referred to as SCADA, or supervisory management and knowledge acquisition, the techniques supplied a chicken’s-eye view of the infrastructure, together with the standing of kit, voltage, present, energy move, and change positions, with updates in seconds. This helped the businesses establish areas of excessive loss and theft and make quicker choices primarily based on correct data.
The SCADA (supervisory management and knowledge acquisition) system at Balaji Property in Delhi’s Kalkaji neighborhood serves because the nerve middle of BSES Rajdhani Energy’s distribution community in South and West Delhi. It permits real-time visibility, distant management of grid operations, fault identification and isolation, and cargo administration. BSES Rajdhani Energy
The utilities additionally changed aging transformers and circuit breakers and created intensive upkeep plans for tools. In 2002, 11 p.c of the transformers within the area had been failing at any given time. That fee is lower than 1 p.c right this moment, in response to Tata Energy-DDL. Crucially, the businesses put in tons of of capacitor banks, together with some cell ones, to produce reactive energy at strategic areas. This enchancment lowered the whole present flowing within the distribution strains and helped stabilize the voltage. Additionally they put in voltage regulators at factors within the system the place voltage tends to drop.
To scale back theft, the businesses changed naked distribution wires with insulated strains—a single cable for 3 phases—which made it tougher to faucet into the strains. The cables additionally lowered outages as a result of they’re higher at stopping floor faults, which might happen when, say, a tree department falls on the road.
Staff obtained higher sensors and instruments to do their jobs safely and precisely. As an example, they got helmet-mounted voltage sensors, that are safer than handheld ones, and thermal scanning instruments to detect hidden defects within the insulation of high-voltage tools that would in any other case have led to catastrophic failures.
To scale back inaccurate billing and meter tampering, the businesses changed the previous electromechanical meters with digital ones which can be learn with handheld units. In some areas, radio-frequency-based group metering techniques had been put in by Tata Energy-DDL to consolidate a number of clients’ meters into one. The information is then wirelessly transmitted to a central database, eliminating the necessity for particular person meter readings. The businesses at the moment are making an attempt smart meters, which give customers extra management over their electrical energy payments and provides utilities distant management of some tools (with the client’s consent).
To encourage individuals to pay their payments, the utilities put in kiosks which can be accessible 24 hours a day, and so they created a web-based fee system and cell app. Incentives for early invoice fee and community-engagement packages additionally helped. Help from Delhi’s legislation enforcement significantly lowered electrical energy theft.
Tata Energy-DDL employed girls residing within the 223 slums it serves within the northern components of the town to knock on neighbors’ doorways and remind them to pay their energy payments. These fee collectors [left and center], generally known as abhas, had been photographed whereas talking with a buyer [right] within the Sanjay Basti space of New Delhi in 2017. Prashanth Vishwanathan/Bloomberg/Getty Pictures
In areas the place theft was significantly rampant and losses had been as excessive as 83 p.c, in response to Tata Energy-DDL, the businesses took a unique technique. These pockets of Delhi had been predominantly occupied by low-income households. Tata Energy-DDL, and later BSES, labored to enhance the water provide for these residents and supply academic alternatives, corresponding to instruction in studying and writing in Hindi in addition to monetary literacy. These efforts targeted on the ladies, who were at home more, and paid them to gather electrical energy funds from their neighbors. Invoice fee charges from these areas at the moment are on par with these of different components of Delhi.
In recent times, some clients have been putting in rooftop solar panels to reap the benefits of subsidies and incentives. This development can cut back electrical energy losses additional as a result of the power generated on the buyer finish reduces present within the distribution strains. Prospects are additionally putting in extra LED lights and energy-efficient home equipment, lowering the load within the system.
BSES is utilizing AI to assist detect theft. The algorithms analyze consumption patterns in pockets the place losses are larger than they need to be. The corporate can be utilizing AI to forecast demand, fine-tune operational effectivity, and supply chatbots for purchasers.
High quality of Life Improves in Delhi
Life in Delhi is best than it was 25 years in the past. I’m not nervous that the ability could exit and pressure me to reschedule my actions. My uninterrupted Wi-Fi provides me peace of thoughts, and my heating and cooling techniques maintain me and my household comfy. I not often want to make use of our previous inverter and battery.
The sharp rise of e-rickshaws in Delhi has elevated demand on the ability grid. Sajjad Hussain/AFP/Getty Pictures
The variety of companies in Delhi has elevated considerably, partially due to the entry to high quality energy. Folks can confidently purchase merchandise that rely on electrical energy. Actually, the town’s peak electrical energy demand has tripled since 2002 because of the enhance in inhabitants, industrial exercise, and use {of electrical} devices.
After which there’s the advantages to the planet. One unit of electrical energy that isn’t frittered away is one much less unit that should be generated, to not point out the reductions in carbon emissions.
Nonetheless, there’s work to do. Some areas of Delhi proceed to have excessive losses, pushed partly by the unlawful charging of e-rickshaws. Elsewhere in India, the states of Himachal Pradesh, Madhya Pradesh, Maharashtra, and Telangana nonetheless expertise losses of about 17 to 23 p.c regardless of the sweeping Electrical energy Act, 2003. There are lots of causes for the continuing losses: lengthy distribution strains to distant villages, much less digitization, and inefficiencies in billing and assortment of funds.
These areas, and others all over the world, can study from Delhi’s grid comeback. Lately, energy losses have elevated considerably in nations corresponding to Argentina, Greece, Jamaica, and Morocco, according to the World Bank, and among the causes are comparable to those who Delhi confronted again in 2002.
In the meantime, Australia, most nations in North America and Europe, and some nations in Asia and Africa expertise low electrical energy losses as they make investments usually of their distribution infrastructure and the moral enforcement of guidelines. In China, for instance, losses have step by step been lower in half, from 7.1 to three.4 p.c. In Latvia, losses plummeted from 25 to five.8 p.c.
What’s essential is a complete method. Applied sciences like sensible metering, AI, and analytics actually assist, however equally essential is that folks within the subject are skilled and take duty for his or her jobs, and that legal guidelines are enforced and funds collected.
“Sustainable loss discount can not occur via expertise alone,” Abhishek Ranjan, CEO of BSES Rajdhani Energy advised me. “Know-how is a crucial enabler, however long-term success comes from combining it with disciplined execution, operational accountability, and robust shopper engagement.”
This text was up to date on 30 September, 2026 with clarification in regards to the full identify Tata Energy-DDL.
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