Solarworld Energy Solutions Secures Major Solar EPC and BESS Contracts

Solarworld Energy Solutions Limited has been awarded multiple utility-scale contracts for solar Balance of System (BoS) and Battery Energy Storage Systems (BESS), primarily from NTPC and NTPC Renewable Energy Limited (NTPC REL). Following the Q3 FY ’26 earnings update on January 28, 2026, the company is positioning itself as a key player in India’s strategic shift from pure capacity addition to grid reliability and Round-the-Clock (RTC) power availability. This transition occurs against a national backdrop of 136 GW cumulative installed solar capacity, with a Central Electricity Authority (CEA) estimated requirement of 35 GW of storage capacity by FY27.

Bikaner Solar Block – 200 MW BoS EPC Project

Solarworld has secured a 200 MW Balance of System (BoS) Engineering, Procurement, and Construction (EPC) contract for the Bikaner Solar Block in Rajasthan. This project aligns with the company’s focus on utility-scale solar execution within a domestic market that added 30.2 GW in the first nine months of FY ’26. The technical scope includes full engineering and construction responsibilities, with Operation and Maintenance (O&M) governed by contractually specified terms.

Management notes that while pure solar EPC projects typically face a standard 11–14 month execution window, the industry is seeing increasing volatility in input costs. Specifically, silver prices have quadrupled, increasing the cost of silver per solar panel from approximately INR 500 to INR 2,000, necessitating precise supply chain management.

Battery Energy Storage System (BESS) Portfolio

As BESS becomes critical for addressing the demand-supply gap in renewable penetration, Solarworld has expanded its storage portfolio with significant utility-scale awards. A highlight of this segment is the formal entry into the BESPA market with a 200 MW / 400 MWh project.

The company leverages a distinct technical advantage by performing cell-to-battery-pack assembly in India. This strategy provides a duty benefit of 5–6% compared to the 22% duty imposed on fully assembled imported containers from China. Furthermore, projects under the RUVNL framework benefit from a subsidy of INR 27,00,000 per megawatt hour (MWh).

Technical Breakdown of Key BESS Projects:

*Estimated based on management’s cost structure of INR 250–265 Cr for a 200 MW BESS plant.

Project Logistics and Execution Timelines

Solarworld’s implementation schedules for the new portfolio are defined by 15-month and 19-month completion windows. In parallel, the company is advancing its existing utility-scale projects, including a 376 MW NTPC order and a 272 MW NHPC Khavda project, both targeted for completion by May 2026.

Order Book and Pipeline Visibility:

• Confirmed Order Book: INR 2,600 Crores (as of December 31, 2025).
• Total Pipeline (including L1 status): INR 3,400–3,500 Crores.

Current execution is transitioning toward Domestic Content Requirement (DCR) compliance, which the government has mandated for solar panels starting June 2026. Solarworld is mitigating the risk of cell price volatility and silver costs by commissioning its own 1.2 GW solar cell manufacturing facility by June 2027, complementing its existing 1.552 GW ALMM-approved module line.

Technical Specification & Manufacturing Integration

To support its EPC and BESS contracts, the company has integrated advanced G12R module technology, currently the most recent standard in solar panel manufacturing. This integration is supported by the ALMM approval and the upcoming operationalization of a junction box manufacturing line by March 2026.

Project Comparison Summary:

Through this diversified portfolio of high-capacity storage and solar BoS contracts, Solarworld Energy Solutions is addressing the structural requirements of India’s evolving energy grid while utilizing domestic manufacturing to navigate global supply chain fluctuations.