Nobody Runs Mumbai's Power Grid

Why New Infrastructure Won’t Fix Mumbai’s Power Grid Problem

By Dev Chandrasekhar

When the lights went out in Mumbai last week, the usual explanations rolled out. Cables are eighty years old. Not enough power is generated inside the city. No batteries to save daytime solar for the evening rush. Versova residents slept on the beach. For a city that has spent decades trading on the assurance of round-the-clock supply, the spectacle was new.

The 2022 committee set up under the state Chief Secretary to fix Mumbai's grid was reminded that it exists. BEST pulled out its Rs 6,000 crore plan to replace ageing wires. The new Kudus–Aarey power line, switched on in April this year, was held up as proof that the city is finally taking the problem seriously.

All of this is true. None of it is the actual problem.

Mumbai is India’s only metropolis where four rival utilities carve up the same footprint without a central commander. Until the city establishes a single, unified system operator to steer real-time crises and anchor massive clean-energy contracts, billions in infrastructure spending will do little to prevent the next grid collapse.

Too Many Cooks 

Mumbai is unusual. Most large cities are served by one power company. Tokyo has TEPCO. Singapore has SP Group. New York has Con Edison. Seoul has KEPCO. Bengaluru has BESCOM, Chennai has TANGEDCO, Kolkata has CESC, and Hyderabad has TSSPDCL. 

Mumbai has four. BEST serves the old island city. Tata Power and Adani Electricity hold parallel licences for the western and central suburbs, where both companies maintain their own networks for the same households. Maharashtra State Electricity Distribution Co Ltd (MSEDCL) covers the periphery. Each buys its own power. Each manages its own customers. Each looks after its own wires.

Delhi has multiple discoms too, but each runs its own demarcated zone — Mumbai is the only Indian city where two licensees serve the same household.

In practice, this means no one person's job is to keep Mumbai's lights on. Each of the four companies handles its own patch. When the city's peak demand hit 4,608 megawatts on June 8 this year, a record, it was managed by four separate control rooms running their own playbooks. There is no captain of the ship.

This is the gap that no new cable or substation can fill.

On paper, and largely in practice, Mumbai already has an islanding scheme, set up in 1981 by Tata Power. Standby charges paid by the city's discoms to MSEDCL for backup capacity sit as a line item in every tariff order.

Since embedded generation inside the city is more expensive to run than rural baseload, Mumbai’s consumers pay a premium per unit over the rest of Maharashtra precisely to fund this insurance, and the spread shows up on every monthly bill.

Neither held up in October 2020, leading to a massive blackout. When the cascade hit, Mumbai's embedded generation came in at 1,394 megawatts against a demand of over 2,800 megawatts.

This matters more than it sounds, because the next big question, India's shift to round-the-clock clean power, runs into the same wall.

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$13 billion

That's how much American tech and e-commerce giant Amazon plans to invest in India by 2030 to expand its artificial intelligence and cloud infrastructure.

Amazon CEO Andy Jassy, who is currently in India, said, "As we grow Amazon in India, our business priorities continue to align with India’s priorities of democratizing access to AI, digitising small businesses, creating jobs, and enabling exports."

Context: This investment will be on top of its planned $35 billion funding announced in December 2025. This will take its total investment in India to $48 billion by 2030.

Fast Facts: Amazon says this will help expand its cloud and AI infrastructure in two regions — Mumbai and Hyderabad. "Both AWS Regions enable customers to securely store their data within India and give them access to the world’s most advanced AI and cloud technology, including high-performance Trainium chips and AWS’s leading inference engine Amazon Bedrock," the announcement said.

India-Iran Energy Talks

India's Oil Minister Hardeep Puri met Iran's Petroleum Minister Mohsen Paknejad on Thursday, saying he explored energy cooperation and that India remained committed to energy security through dialogue.

Fast Facts: Oil prices fell to pre-war levels the same day as flows through the Strait of Hormuz neared normal, even as Iran's Revolutionary Guards reportedly warned vessels to stick to Tehran-designated routes, rejecting new shipping lanes.

Brent crude dropped below $72.48 a barrel, while WTI hovered below $70.

The Shift: US Secretary of State Marco Rubio, touring the Gulf to build support for a preliminary Iran deal, said Washington would act if Iran threatened the strait, while ruling out shipping tolls, Reuters reported.

But Where’s The US Trade Deal?

Even as negotiations have dragged on for months, Commerce Minister Piyush Goyal said in London on Thursday that India and the United States are nearing a trade deal.

Context: Talks concluded this week in New Delhi between Goyal and US Trade Representative Jamieson Greer, days after Trump and Modi called an agreement "very close" at the G7 summit. Both sides described seeking a "balanced" deal, though neither confirmed whether key differences had narrowed.

The Core earlier noted how the commercial rationale of the deal collapsed once Washington's offer to cut tariffs from 25% to 18% was nullified, even as Indian capital outflows continue, raising questions over why New Delhi is still chasing the deal at all.

Setup: India had insisted it must secure a competitive edge over rival exporting nations before signing. Washington's Section 301 probe into India remained the key obstacle, with New Delhi demanding its termination and assurances against future probes before finalising the pact.

Controlled Damage?

The West Asia war is on hold, and the Strait of Hormuz has reopened. This is good news for India's industries. According to rating agency Crisil, the US-Iran truce could ease pressure on India Inc’s profitability this fiscal, with the hit to operating margins now expected at around 100 basis points instead of the 200 basis points feared earlier.

Trigger: Crisil estimates that if the ceasefire holds, two-thirds of the 34 sectors it assessed will see minimal disruption, with crude prices softening and gas supplies gradually normalising. “The recent sharp correction in crude oil prices and likely normalisation of gas supplies are beneficial for India Inc as that would ease cost pressures meaningfully,” said Subodh Rai, managing director of Crisil Ratings.

Context: Airlines, ceramics, speciality chemicals, flexible packaging, polyester textiles and diamond polishing remain the most exposed sectors, facing margin pressure from higher input costs and supply disruptions.

However, Crisil expects no sector to suffer a severe hit to revenue or profitability. Oil marketing companies and fertiliser makers are likely to be among the biggest beneficiaries of easing energy costs, though risks remain from a fragile US-Iran agreement and a potential El Niño-driven hit to rural demand.

China-Linked Investment To Get A Nod

India is set to approve a $370 million investment from Horse Powertrain, a hybrid-engine venture backed by China's Geely and France's Renault, marking one of the biggest Chinese-linked manufacturing investments in years, Bloomberg reported.

The last major Chinese auto investment came in 2017, when SAIC bought General Motors’ plant to launch MG Motor, later restructured under Indian ownership.

Overview: The deal lets Horse invest in Renault's Indian operations to build hybrid powertrains, starting at its Chennai plant, for Renault and Nissan cars sold locally. It would be among the first approvals since India eased March rules on investment from bordering nations, aimed chiefly at China.

Setup: Horse, formed in 2024 by Geely and Renault, with Saudi Aramco holding a stake, runs 18 plants globally. "We are expecting a formal decision soon," the company told Bloomberg.

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