Tata Power Invests ₹300 Crore in Battery Storage for Mumbai Grid

Tata Power is spending ₹300 crore on a 100 MW/200 MWh battery storage system in Mumbai, part of its largest infrastructure push in the city to meet rising demand from data centers, metro rail, and redevelopment.

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Tata Power has announced a ₹300 crore investment in battery energy storage systems (BESS) for Mumbai, marking its largest infrastructure program in the city. The company plans to install 100 MW/200 MWh of storage capacity, targeting applications such as data centers, the Metro rail network, and urban redevelopment projects.

The initiative is part of a broader expansion of Tata Power's Mumbai distribution network, which currently serves more than 800,000 consumers across 5,911 km. The company expects to add another 100,000 consumers in the coming years. To support this growth, the number of distribution substations will increase from 37 to 50, and consumer substations will grow from 1,227 to 1,507. The high-tension cable network will be extended from 3,040 circuit km to 3,590 circuit km, while the low-tension network will rise from 2,872 circuit km to 3,472 circuit km.

Nilesh Kane, Chief – Transmission and Mumbai Distribution at Tata Power, said: "The initiative is aimed at enhancing grid reliability, improving demand-side flexibility, and optimising power procurement costs while enabling a more resilient power network."

The company projects that peak load on its Mumbai network will reach 2,000 MW over the next five years, and overall power demand in the city could hit 6,500 MW by 2031. To address space constraints, Tata Power is deploying innovative infrastructure such as vertical substations, high-rise consumer substations, underground submersible substations, and tower-mounted substations.