Tata Power, one of India’s largest integrated power companies, has announced its plans to install a 100 MW Battery Energy Storage System (BESS) in Mumbai over the next two years. The initiative has received approval from the Maharashtra Electricity Regulatory Commission (MERC) and is part of the company’s broader commitment to driving energy innovation and enhancing grid stability.
As of 1:13 PM on April 7, 2025, the Tata Power share price is down by over 5% due to a broader sell-off in the stock market.
The BESS will be installed across 10 strategic locations in Mumbai, particularly near key load centres. With advanced ‘black start’ capabilities, the system will ensure a swift recovery of power supply to essential services such as the Metro, hospitals, the airport, and data centres during grid disturbances. This is expected to play a pivotal role in preventing large-scale blackouts in the city.
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Equipped with a high ramp-rate capability, the BESS will help manage peak loads and store electricity during off-peak, low-cost periods. This stored energy can then be used during high-demand hours, potentially reducing power purchase costs and paving the way for lower electricity tariffs in the future. The system will also defer capital expenditure by minimising the need for costly infrastructure upgrades.
The storage system will not only enhance reliability but also provide ancillary services such as frequency regulation and voltage support. Moreover, it will support solar energy integration by storing surplus daytime power for use during peak demand periods, thereby increasing the share of green energy in the city’s power mix. It will also help Tata Power meet its energy storage obligations.
Tata Power has incorporated robust safety mechanisms into the BESS, including three-layered temperature monitoring and fire suppression systems at the cell, module, and rack levels. The system will be centrally controlled and monitored from the company’s Power System Control Centre (PSCC), ensuring operational efficiency and safety.
Plans are underway to integrate the BESS into Tata Power’s Distributed Energy Resource Management System (DERMS), which will further enhance operational efficiency. The system will feature high round-trip efficiency and lower auxiliary consumption, contributing to a longer lifespan and improved performance.
As cities transition to renewable energy, BESS technologies are becoming essential. Their shorter deployment time and cost-effectiveness compared to traditional infrastructure upgrades make them a critical component of modern urban power networks. Tata Power’s initiative reflects its commitment to sustainable development, technological advancement, and reliable service delivery.
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Published on: Apr 7, 2025, 4:17 PM IST
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