Mumbai is set to receive a substantial boost in green energy supply as Tata Power enters multiple long-term power purchase agreements (PPAs) to strengthen renewable capacity for the city. The move aims to ensure uninterrupted electricity during periods of high demand, particularly in the city’s hot and humid conditions, while steering the metropolis towards a more sustainable energy future.
Officials confirmed that Tata Power has finalised three major agreements in the past few weeks to supply Firm and Dispatchable Renewable Energy (FDRE) to its consumers across the island city and suburbs. With nearly 800,000 customers under its network, the company is preparing to meet Mumbai’s surging electricity demand, which recently touched 1,000 MW amid rising temperatures. One of the landmark agreements was signed with a leading solar developer for a 50 MW hybrid project combining solar and Battery Energy Storage Systems (BESS). The contract, spanning 25 years, will deliver power at ₹4.43 per unit and guarantee four hours of firm renewable power during peak hours every month with 90% availability. Officials noted that this hybrid configuration will enable smoother integration of renewables into the city grid, ensuring reliability even during cloudy or wind-deficient periods.
In another major step, Tata Power signed a PPA with an independent renewable energy producer for a 70 MW FDRE project in Maharashtra. The facility will integrate 180 MWp of solar and wind capacity with a 280 MWh battery energy storage system, enhancing the flexibility and dispatchability of renewable power. A third PPA was signed internally within the Tata Group for an 80 MW hybrid renewable project that combines advanced solar, wind, and battery storage systems, expected to generate about 315 million units of clean electricity annually. Company officials said the projects will collectively reduce over 0.25 million tonnes of CO₂ emissions every year once fully operational, helping Tata Power meet its Renewable Purchase Obligation (RPO) under the Maharashtra Electricity Regulatory Commission’s framework. This expansion also aligns with the city’s broader sustainability goals, aiming to transition toward cleaner, low-carbon power generation.
Tata Power Renewable Energy Limited (TPREL), the company’s green energy arm, has now built a renewable capacity portfolio of 11.3 GW, with 9.4 GW under power purchase agreements and 5.6 GW operational. Of this, 4.6 GW comes from solar and 1 GW from wind energy. The firm’s distributed generation capacity—spanning rooftop solar, microgrids, and hybrid installations—has surpassed 3 GW, further embedding renewables into India’s urban and rural landscapes. Energy experts believe that Mumbai’s increasing reliance on dispatchable renewable energy marks a critical shift in how large cities adapt to climate resilience and power security. As electricity demand peaks with rising temperatures, integrating green energy with battery storage solutions ensures stable, affordable, and sustainable supply.
This strategic expansion of renewable power not only strengthens Mumbai’s energy resilience but also positions the city as a leader in India’s transition toward net-zero carbon urban systems—an essential step in building greener, cleaner, and more equitable cities for the future.
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