India’s Electricity Revolution Faces Tough Test in Peak Summers
Union Minister of Power Manohar Lal Khattar at a public meeting. (Image Powergrid)
By P. SESH KUMAR
Despite near-nationwide grid integration and rising renewable capacity, financial distress, aging infrastructure and extreme weather continue to expose vulnerabilities.
India’s power system has transformed into a near-unbroken national grid, linking all regions and virtually eliminating nationwide blackouts. This note seeks to trace that journey – from policy to practice – unpacking how the national grid operates, the roles of central and state generation/transmission/distribution entities, and the tug-of-war in India’s quasi-federal electricity framework. It then dives into the industry’s choke points: aging infrastructure, state DISCOM debts, and renewable integration challenges- each illustrated by recent news and CAG audits. Finally, it sketches practical fixes (smart networks, tariff reforms, storage) and the government’s roadmap, before highlighting key CAG findings on DISCOM performance.
India’s national electricity grid is a vast synchronized network. In 2013 India linked its five regional grids (North, South, East, West, Northeast) into one system via a 765 kV line between Raichur and Sholapur, enabling scheduled power exchanges nationwide. Today the Inter-Regional transmission capacity exceeds 116,500 MW, meaning electricity flows almost seamlessly across states. (Behind the scenes, the Grid Controller of India Limited – formerly POSOCO – runs the National and five Regional Load Despatch Centres to ensure 24×7 stability and open access.). This centrally coordinated grid has helped India double its generation capacity over a decade, achieve universal electrification and even become a net exporter of power, with “near-zero outages” across the network.
Yet India’s electricity machine is not uniform. Generation comes from a mix of central government plants (NTPC, NHPC, etc.), state utilities, and private IPPs, burning coal, gas, hydro, nuclear and increasingly wind/solar. High-voltage transmission lines- mostly run by central agencies like Power Grid (the Central Transmission Utility)- carry bulk power between regions. At the last mile, distribution companies (DISCOMs)- typically state-owned or state-regulated franchises -deliver electricity to homes and businesses.
India has built one of the world’s largest synchronized electricity grids and achieved near-universal electrification. Yet beneath this engineering success lie deep structural problems—financially weak DISCOMs, transmission stress, renewable balancing challenges and recurring summer outages.
The central government and regulators set broad rules, but states own the wires. Electricity is a concurrent subject under the Constitution. In practice, the Union Ministry of Power sets national policy and plans (via the Central Electricity Authority), while the Central Electricity Regulatory Commission (CERC) regulates interstate trade and tariffs of central generators. State governments retain authority over distribution, run most DISCOMs, and appoint State Electricity Regulatory Commissions (SERCs) to set retail tariffs. This leads to a complex division of labour: the Centre wires the grid and funds projects, but states run local generation and sell power to consumers, often subsidizing tariffs.
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This quasi‑federal split creates friction. States may resist reforms that impinge on their turf, and central reforms have sometimes stalled. A recent example: the proposed 2022 Electricity Amendment Bill-aimed at encouraging open markets – sparked “stiff opposition” from states worried it would undermine their control of distribution. In many cases states only implemented federal schemes half‑heartedly to avoid penalties. The legacy is a patchwork: some states meter all customers and push renewables, others lag in billing or maintenance.
Choke points abound. One glaring issue is the financial health of DISCOMs. Despite power availability, most state utilities lose money year after year. The World Bank notes that India’s DISCOMs incurred about Rs 678,000 crore (USD 84 billion) in losses and hold roughly USD 83.5 billion of debt. These losses persist despite programs like UDAY (which swapped debt into state books), chiefly because many DISCOMs still charge tariffs below cost and leak energy through poor metering and theft. For instance, a CAG report on Uttar Pradesh found that after UDAY the state’s aggregate technical-and-commercial (AT&C) losses (a combined measure of technical loss, theft and billing inefficiency) were still about 30% by 2019 (instead of the 15% target) and even rose to 31.2% by 2022. Millions of consumers remained unmetered. Such shortfalls force DISCOMs to buy expensive power or forgo revenue, and starve maintenance budgets.
The consequences of these structural infirmities become brutally visible during India’s extreme summers. India’s power grid often resembles a giant electrical tightrope stretched across a boiling subcontinent. When temperatures soar to 45–50°C, the entire system comes under savage stress as millions of air-conditioners, desert coolers, irrigation pumps and industrial cooling systems roar to life simultaneously, sending electricity demand into uncharted territory within a matter of hours. What appears on paper as a modest “peak deficit” quickly translates on the ground into feeder shutdowns, voltage collapse, transformer burnouts and rolling blackouts.
Extreme heat itself reduces the efficiency of thermal power plants because overheated cooling systems struggle to condense steam efficiently, while transmission lines lose carrying capacity as they sag under scorching temperatures. Coal logistics too begin to fray under pressure: rail congestion, low pithead stocks and sudden spikes in demand leave several plants operating perilously close to fuel starvation. At the same time, solar energy – now a major contributor to India’s daytime supply-begins fading exactly when evening cooling demand remains ferocious, creating the notorious “duck curve” where grid managers must suddenly ramp up aging coal and hydro stations within minutes. The “duck curve” describes a situation where solar power floods the grid during daytime, sharply reducing demand for conventional electricity, but then suddenly drops at sunset when evening electricity demand is still very high. This creates a steep surge in demand on coal, hydro or gas plants within a short period, making grid balancing extremely difficult.
In many cities, decades-old distribution infrastructure simply cannot cope with the surge load. Transformers trip repeatedly, underground cables overheat, substations operate beyond safe capacity and financially crippled DISCOMs, already bleeding from theft, subsidies and poor billing recovery, lack the capital needed for preventive maintenance or rapid network upgrades. The result is a dangerous cocktail of technical overload, financial fragility and policy paralysis where even a unified national grid struggles to guarantee uninterrupted power. Peak summer outages therefore are not merely a story of “insufficient generation”; they are the visible symptoms of a deeply stressed ecosystem where climate extremes, weak distribution infrastructure, renewable intermittency, fuel bottlenecks and chronic governance failures collide all at once.
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Meanwhile, India’s fuel mix creates new challenges. The surge in solar and wind has largely solved daytime supply gaps, but creates a “duck-curve” problem, referred earlier: demand peaks in evenings after sun sets. Reuters reported that upcoming summers risk nighttime shortages because planned coal and hydro expansion have lagged. By April 2023, peak demand after sunset (about 217 GW) outstripped reliable supply by around 1.7%, exposing millions to possible outages. In short, India has “tipped the scales” towards renewables but needs more flexible backup (hydro, gas, storage) when intermittent sources drop. Additional stresses include uneven coal supply (monsoons, mine output), aging coal plants (maintenance backlogs) and transmission bottlenecks in transporting power from remote wind/solar farms to cities.
The story is not all gloom. Government policy is evolving. The draft National Electricity Policy 2026 (NEP 2026) sets ambitious goals: raise per-capita consumption from 1,460 kWh now to 2,000 kWh by 2030 and 4,000 kWh by 2047, while doubling transmission capacity and enshrining dynamic pricing and market reforms. Programs like smart metering (approved in many states), feeder segregation for agriculture, and renewable open-access rules aim to boost efficiency. Pilot initiatives include battery/storage auctions and pumped hydro projects to firm up supply. The 100% “ISTS waiver” for solar/wind (free transmission) has cut costs for green power and was even extended to hybrid and battery projects. Financially, the Centre and state governments continue to recapitalize DISCOMs and push for realistic tariffs – albeit slowly. Analysts urge actions like stricter billing, demand-side management (time-of-use tariffs, rooftop solar), and grid-scale storage to smooth peaks.
Throughout, independent audit acts as a reality-check. CAG has sharpened its focus on the power sector. In early 2026 the auditor-general launched a “horizontal performance audit” of DISCOMs nationwide. Its reports have been sobering. For example, the UP audit showed that even after UDAY, DISCOM debt and losses ballooned – net losses of Rs 3,792 crore in FY2020 rose to Rs 6,492 crore by FY2022, leaving total cumulative losses at nearly Rs 77,937 crore. The CAG critiqued Delhi and Kerala audits similarly: unrealized subsidy recoveries, delayed tariff increases, and unmetered connections continued to plague accounts. These findings reinforce the core lesson: without stronger governance and federal coordination (real tariff reforms, metering and loss control), simply adding capacity won’t light every bulb sustainably.
In summary, India’s national grid is a remarkable engineering feat – a unified grid many feared impossible -but it runs on politically fragmented rails. Decades of growth have brought virtually round-the-clock power, yet systemic strains remain. The path ahead involves bridging the federal divide (harmonizing central goals with state execution), modernizing technology, and toughening regulation. As recent CAG audits reveal, plugging the revenue leaks in DISCOMs and aligning financial incentives is critical. With the clean-energy transition accelerating, India must now blend its federated governance and engineering ingenuity to keep the power flowing for all.
(This is an opinion piece. Views expressed are the author’s own.)
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