Solarworld Energy Solutions is an Indian company that builds, owns and maintains the physical plants that generate and store clean electricity - solar farms and giant batteries - and it increasingly makes the hardware that goes inside them. It started in 2013 as a pure contractor for solar projects and has spent over a decade climbing the value chain: first by bringing construction and maintenance in-house, and now by building its own factories for solar modules, cells and battery storage systems. The recurring logic is backward integration - every step inward is meant to cut out a supplier, capture that margin and insulate the business from policy shocks and supply-chain disruption. # Business segments Three engines at different stages - a solar-construction cash cow, a battery-storage growth bet, and a cluster of captive factories being built to feed them both. ## 1. Solar EPC and O&M: the foundation that builds and tends utility-scale solar plants **A turn-key construction and long-term maintenance business serving India’s state-owned power giants, now running fully on in-house execution.** - **Builds entire solar plants for a fixed price** - under the CAPEX model, which brings in the majority of the revenue, the company designs, procures equipment for, installs and commissions a working solar farm, then hands ownership to the customer; a typical project takes 12 to 18 months. - **Stays on to run what it built** - roughly 95% of EPC projects come with three-to-five-year operations and maintenance contracts, so a one-time construction job turns into a recurring revenue stream; a dedicated team of 243 engineers monitors plants using SCADA systems, AI-based predictive maintenance and digital twin modelling to minimise downtime. - **The customer list is a roster of India’s public-sector energy buyers** - marquee names include NTPC Renewable Energy, SJVN Green Energy, Rajasthan Rajya Vidyut Utpadan Nigam and Gujarat Urja Vikas Nigam, relationships that produce repeated mandates; the top customer alone represented 79% of FY25 revenue, a concentration the company is actively working to dilute by adding private-sector clients. ## 2. Battery Energy Storage Systems: the growth engine built for a grid that needs batteries **An integrated storage play that designs and builds utility-scale battery plants, supplies the hardware, and participates as an independent power producer - all aimed at the moment solar-plus-storage becomes the norm.** - **Targets diesel generators as the enemy** - in Delhi NCR, where diesel gensets face restrictions, the company positions its battery storage systems as a cleaner power-backup and UPS replacement for commercial and industrial loads and data centres. - **The revenue mix is being deliberately tilted toward storage** - management is steering the business toward a 60-40 BESS-to-solar EPC split, betting that the industry’s shift from standalone solar to solar-plus-storage will make batteries the larger opportunity. - **Makes the batteries it installs** - a 3.4 GW fully automated BESS production facility using KUKA Robotics is already built in Haridwar and undergoing trials, so the company can supply its own projects rather than buying from third parties. ## 3. Manufacturing: the captive supply chain being built to feed the other two engines **A cluster of factories - solar modules, cells, battery storage and junction boxes - designed to make the company its own preferred supplier.** - **Cells are the next link backward** - a 1.2 GW solar cell factory is under development in Pandhurana, Madhya Pradesh, with commercial operations now targeted for June 2027; it is part-financed by IPO proceeds and is meant to give the module line an in-house source of its key raw material. - **Even the small parts are being pulled in-house** - a 5 GW junction-box line is being set up through a joint venture, with the site ready and trials underway, so that a component every solar panel needs is no longer bought from someone else. - **The logic is margin protection, not just patriotism** - management frames backward integration as a way to improve profitability, reduce dependence on external suppliers and shield the business from policy volatility such as sudden changes in ALMM requirements; the company’s own module manufacturing cost is already nearly at par with outside suppliers. # Group structure and partners **A listed parent with subsidiaries and joint ventures each built for a specific purpose - manufacturing, storage, cell production or the small RESCO power-sales business.** - ZNSHINE Solarworld Private Limited is the wholly owned subsidiary that holds the 1.2 GW module factory and the ALMM enlistment; it was formed under an equity co-operation agreement with ZNSHINE PV-Tech, which provides the technology. - Solarworld BESS One Private Limited is a subsidiary created for hybrid and energy-storage projects. - KSPL is the subsidiary that received IPO proceeds to finance the Pandhurana solar cell plant. - Kehan Solarworld Private Limited is a joint venture that executes the tiny RESCO business - where the company invests in and owns the solar asset and sells the power - which contributed only 0.12% of FY25 revenue. - A separate, undisclosed joint-venture partner is involved in the 5 GW junction-box line. - The company previously ran an outsourced labour model through joint venture Danton Power Private Limited; that arrangement was transitioned effective April 1, 2024 when execution moved fully in-house.