Tata Power Commissions 190.5 MW Rajasthan Solar Project With 115 MWh Battery Storage

Tata Power Renewable Energy announced on August 24, 2026, that it has commissioned a 190.5 MW firm and dispatchable renewable energy project at Kalasar in Bikaner, Rajasthan, combining utility-scale solar generation with 115 MWh of battery storage and grid-support equipment. The Tata Power Rajasthan FDRE project matters because it moves a large solar-plus-storage development from construction into operation while supplying contracted electricity to distribution companies in three Indian markets.

The facility forms part of a larger 460 MW contracted FDRE development under SJVN’s Tranche-1 program and will supply electricity to Haryana Power Purchase Centre, Maharashtra State Electricity Distribution Company and Noida Power Company.

The project combines solar generation with 115 MWh of storage

Tata Power Renewable Energy Limited, a subsidiary of Tata Power, designed the Kalasar development as firm and dispatchable renewable energy rather than a conventional standalone solar plant.

Tata Power’s August 24 project announcement says the installation combines large-scale solar generation, battery energy storage and grid-support technologies intended to improve the reliability and dispatchability of renewable electricity.

The 115 MWh battery allows some solar generation to be shifted across time rather than requiring electricity to be delivered only when the photovoltaic array is producing. Tata Power has not disclosed the battery’s MW power rating, so its exact discharge duration cannot be calculated from the available announcement.

FDRE projects are designed around electricity delivery rather than generation alone

Firm and dispatchable renewable-energy contracts are structured to make renewable generation more predictable for electricity buyers.

Solar output varies with daylight and weather, while grid demand follows a different schedule. Storage can help bridge part of that mismatch by charging when renewable electricity is available and discharging when contracted delivery is required.

Microgrid Media recently covered NTPC Renewable Energy’s 500 MW assured peak-power award, another example of Indian procurement shifting toward renewable projects that combine generation and storage to meet defined delivery periods.

The Tata Power Rajasthan FDRE project differs because the Kalasar facility has now reached commissioning rather than remaining at the auction or development stage.

Grid-support equipment is also part of the installation

The project includes a harmonic filter bank and static VAR generator systems in addition to its battery-storage equipment.

Those technologies address power-quality and voltage-control requirements that become increasingly important as large inverter-based renewable resources connect to transmission networks.

Tata Power said the project’s switchyard was completed in three months and the harmonic filter bank in one month despite supply-chain challenges affecting transmission-line materials, module-mounting structures and other equipment.

Recent international storage projects show a similar expansion in the technical role of inverter-based resources. Microgrid Media’s coverage of Supernode Stage 3 in Queensland details how another large battery project is adding grid-forming technology specifically to provide greater power-system support.

Kalasar represents about 41% of the larger contracted FDRE capacity

The commissioned 190.5 MW facility represents roughly 41% of the 460 MW contracted FDRE capacity cited by Tata Power.

pv magazine India independently reported that the Kalasar installation will serve HPPC, MSEDCL and NPCL and incorporates the 115 MWh battery system and grid-support technologies.

The project expands Tata Power Renewable Energy’s utility-scale renewable portfolio to approximately 12.4 GW, according to the company. About 6.9 GW is operating, including approximately 5.6 GW of solar and 1.3 GW of wind, while roughly 5.5 GW remains under implementation.

Tata Power is building a broader dispatchable-renewables portfolio

The company has other FDRE projects under development.

Tata Power previously signed a PPA with NTPC for a separate 200 MW FDRE project combining solar, wind and battery storage and designed to provide four hours of peak supply with specified availability requirements.

That portfolio demonstrates a broader shift from measuring renewable projects only by installed solar or wind capacity toward evaluating when electricity can actually be delivered.

What remains undisclosed

Tata Power has not disclosed the manufacturer, chemistry or MW power rating of the Kalasar battery system.

The company also has not provided enough public technical information to determine the battery’s discharge duration or precisely how much of the 190.5 MW project output can be shifted using the 115 MWh storage system.

Those distinctions matter because MW describes instantaneous power while MWh describes stored energy.

What happens next

The Kalasar facility has moved into the operating phase, making performance and dispatch data the next meaningful indicators of how the FDRE design functions under actual grid conditions.

The project also provides another operating reference point for Indian utilities and renewable developers as procurement increasingly combines solar and wind resources with storage and advanced power electronics.

Additional commissioning across Tata Power Renewable Energy’s remaining development pipeline will determine how quickly its operating renewable portfolio grows beyond the current 6.9 GW level.

Microgrid Media Editorial Desk

The Microgrid Media Editorial Desk reports on microgrids, energy storage, grid modernization, data center power demand, distributed energy resources, and energy policy. Reporting published under the Editorial Desk byline is developed from primary regulatory records, utility filings, government documents, company disclosures, and independently verifiable sources, and is reviewed under Microgrid Media’s editorial standards.

Editorial oversight: Jonas Muthoni, Editor-in-Chief