Premier Energies and Germany’s RCT Group Establish Joint Venture for 12 GWh Battery Storage Manufacturing Facility

Indian solar manufacturing company Premier Energies Limited has formalised a strategic joint venture with Germany’s RCT Group to establish a 12 gigawatt-hour (GWh) Battery Energy Storage System (BESS) manufacturing facility in Telangana. The partnership represents a major expansion of Premier Energies’ manufacturing portfolio beyond solar cells and modules into advanced energy storage technologies.

The agreement was executed on October 15, 2026, between Premier Battery Technologies Private Limited, a wholly owned subsidiary of Premier Energies, RCT Nexor Energy Private Limited and Premier Energies Storage Solutions Private Limited. The joint venture will manufacture battery energy storage products for residential, commercial, industrial and utility-scale applications.

The proposed manufacturing facility will be developed at Seetharampur in Telangana, with an initial production capacity of 6 GWh planned for the financial year 2027–28. The project will subsequently expand towards the planned total annual manufacturing capacity of 12 GWh, strengthening India’s domestic capabilities in energy storage equipment manufacturing.

The development reflects growing industrial cooperation between India and Germany in renewable energy technologies, advanced manufacturing and energy storage systems. It also supports India’s efforts to establish a domestic manufacturing ecosystem capable of meeting the increasing demand for electricity storage infrastructure.

Premier Energies Formalises Battery Manufacturing Joint Venture

Premier Energies informed the National Stock Exchange and BSE Limited on October 15, 2026, that its subsidiary Premier Battery Technologies Private Limited had executed a Share Allotment cum Shareholders Agreement with RCT Nexor Energy Private Limited and Premier Energies Storage Solutions Private Limited.

The agreement formalises the strategic partnership originally announced on September 10, 2026, when Premier Battery Technologies signed a binding term sheet with RCT Energy India Private Limited, a company belonging to Germany’s RCT Group. RCT Energy India subsequently changed its name to RCT Nexor Energy Private Limited.

Under the agreement, Premier Energies Storage Solutions Private Limited will serve as the joint venture company responsible for establishing and operating the proposed battery energy storage system manufacturing facility. The company will undertake the construction, installation and commissioning of manufacturing infrastructure, followed by the production, assembly and sale of energy storage products.

The facility will incorporate semi-automated and fully automated manufacturing processes, supporting the production of battery storage systems for different market segments.

The formal agreement establishes the operational and ownership framework for the partnership, enabling the companies to proceed with the planned development of the manufacturing facility.

Telangana Facility to Begin with 6 GWh Manufacturing Capacity

The joint venture plans to establish its battery energy storage manufacturing operations at Seetharampur in Telangana, with a proposed total annual production capacity of 12 GWh.

The first phase will involve setting up a 6 GWh manufacturing facility during FY2027–28. This initial capacity will provide a foundation for expanding operations as the joint venture develops its manufacturing capabilities and addresses demand from domestic and international markets.

Battery energy storage manufacturing capacity is commonly expressed in gigawatt-hours, representing the aggregate energy storage capacity of the battery systems that a facility can manufacture over a specified period.

A 6 GWh annual manufacturing capacity is equivalent to producing battery storage systems with a combined rated capacity of six million kilowatt-hours each year. At its proposed full capacity of 12 GWh, the facility would be capable of manufacturing systems representing 12 million kilowatt-hours of aggregate storage capacity annually.

The project will support the development of battery storage equipment for a wide range of applications, from smaller residential installations to large industrial and utility-scale systems.

Telangana has developed an industrial ecosystem covering electronics, electrical equipment, renewable energy technologies and advanced manufacturing. The proposed facility will contribute to this industrial base by introducing additional manufacturing capacity for energy storage products.

German Partner to Acquire Up to 20% Equity in Joint Venture

The Share Allotment cum Shareholders Agreement establishes a milestone-linked equity participation structure for RCT Nexor Energy Private Limited.

According to Premier Energies’ official stock-exchange disclosure, RCT Nexor will have the right to subscribe for equity shares representing an aggregate 15% stake in Premier Energies Storage Solutions Private Limited, with the allotment taking place in four tranches linked to agreed project milestones.

The German group’s Indian subsidiary will also have the option to acquire an additional 5% equity interest for cash consideration after completion of the first phase of the project, subject to the agreement’s conditions.

The arrangement provides a framework for progressively increasing RCT Nexor’s participation as the manufacturing project advances.

The joint venture’s board will comprise three directors, with Premier Battery Technologies nominating two members and RCT Nexor nominating one. This arrangement establishes the management structure through which the participating companies will oversee the venture.

Premier Energies Storage Solutions is currently a wholly owned subsidiary of Premier Battery Technologies. The agreed equity subscriptions will progressively introduce RCT Nexor as a shareholder in accordance with the project milestones.

The participation of Germany’s RCT Group brings an international industrial partner into an Indian battery storage manufacturing initiative, strengthening bilateral business cooperation in clean energy technologies.

Battery Energy Storage Systems Support Renewable Power Integration

Battery Energy Storage Systems are becoming an increasingly important component of modern electricity infrastructure because they enable electricity generated at one time to be stored and supplied when required.

Solar power plants produce electricity primarily during daylight hours, while wind generation depends on changing weather conditions. These variations create a need for technologies capable of storing electricity and releasing it during periods of lower renewable generation or increased demand.

Battery storage systems address this requirement by charging when electricity is available and discharging when additional power is needed.

A typical Battery Energy Storage System combines rechargeable battery modules with power conversion equipment, battery management systems, thermal management technologies and digital control systems.

These components work together to store electrical energy, monitor battery performance, regulate charging and discharging operations and maintain safe operating conditions.

At the electricity grid level, battery storage can help balance supply and demand, support frequency regulation and improve the integration of renewable energy generation.

For commercial and industrial consumers, energy storage systems can provide backup power, assist with peak-demand management and improve the utilisation of electricity generated from rooftop solar installations.

The expansion of battery storage manufacturing is therefore closely connected with India’s broader renewable energy development programme.

Joint Venture to Manufacture Storage Solutions for Multiple Sectors

Premier Energies Storage Solutions will manufacture battery energy storage products for residential, small business, commercial, industrial and utility-scale applications.

Residential battery systems can store electricity generated by rooftop solar panels and provide power during periods when solar generation is unavailable. These systems can improve the utilisation of locally generated renewable electricity and provide backup power where suitable operating arrangements are installed.

Small businesses and commercial establishments can use battery storage systems to manage electricity consumption, support essential equipment and reduce dependence on grid electricity during selected operating periods.

Industrial facilities require larger storage solutions capable of managing substantial electrical loads. Battery systems can support power quality, backup requirements and the integration of renewable energy into industrial operations.

At the utility scale, battery energy storage systems are integrated with renewable power plants and electricity networks to manage fluctuations in generation and demand.

Large storage installations can absorb surplus electricity during periods of high renewable generation and release it during evening demand peaks or other periods when additional power is required.

By targeting multiple applications, the joint venture is positioning its manufacturing operations to serve different segments of India’s expanding electricity storage market.

The approach also supports opportunities for supplying battery storage equipment to international customers as renewable energy deployment continues across global markets.

Premier Energies Expands Beyond Solar Cell and Module Manufacturing

Premier Energies Limited has established itself as a major Indian manufacturer of solar photovoltaic cells and modules, supplying products for renewable energy installations across different market segments.

The company has expanded its manufacturing operations through investments in solar cell production, module manufacturing and advanced photovoltaic technologies.

In September 2026, Premier Energies announced the commissioning of a 7 GW TOPCon solar cell manufacturing facility in Andhra Pradesh, expanding its total solar cell manufacturing capacity to approximately 10.6 GW.

TOPCon, or Tunnel Oxide Passivated Contact, is an advanced photovoltaic cell technology designed to improve solar conversion efficiency through specialised semiconductor structures.

The company has also expanded its solar module manufacturing capacity to approximately 11.1 GW, strengthening its position in India’s solar equipment manufacturing industry.

Alongside its manufacturing expansion, Premier Energies reported new orders worth ₹4,001 crore during the second quarter of FY2026–27. These orders covered solar cells, modules and engineering, procurement and construction activities.

The proposed battery storage joint venture represents a further diversification of the company’s operations into a technology sector closely associated with solar power generation.

By developing manufacturing capabilities in both photovoltaic equipment and battery storage systems, Premier Energies is broadening its participation in India’s renewable energy value chain.

India–Germany Industrial Partnership Strengthens Energy Storage Manufacturing

The collaboration between Premier Energies and Germany’s RCT Group represents another development in India–Germany industrial cooperation in renewable energy and advanced manufacturing.

Germany has developed extensive experience in renewable electricity integration, energy management technologies and industrial engineering. Indian companies are simultaneously expanding their manufacturing capabilities in solar equipment, electrical systems and emerging energy storage technologies.

The partnership brings together an established Indian solar manufacturing company and a German industrial group through a dedicated battery storage manufacturing venture.

Such collaborations provide opportunities to combine industrial capabilities, manufacturing experience and market knowledge while developing production facilities that serve domestic and international demand.

The project also aligns with India’s efforts to encourage investment in advanced manufacturing technologies and strengthen the domestic supply of equipment required for clean energy infrastructure.

Battery energy storage products involve several interconnected technologies, including battery modules, electronic controls, inverters, power management equipment and thermal management systems.

Developing manufacturing capacity in these areas can create opportunities for Indian suppliers of electrical components, fabricated structures, control equipment and associated industrial products.

The planned Telangana facility will contribute to the expansion of domestic manufacturing activity in a sector expected to play an increasingly important role in renewable energy deployment.

India’s Renewable Energy Expansion Creates Demand for Battery Storage

India’s growing renewable energy sector is creating substantial demand for electricity storage technologies.

Solar and wind power projects are being developed across the country as part of efforts to diversify electricity generation and reduce the carbon intensity of the energy system.

However, the increasing contribution of variable renewable electricity requires additional measures to maintain grid stability and ensure reliable power supplies.

Battery energy storage systems can provide rapid responses to changes in electricity demand and generation, making them suitable for grid-balancing applications.

They can also complement pumped-storage hydropower projects and other energy storage technologies within a diversified electricity system.

The Central Electricity Authority has projected substantial growth in India’s energy storage requirements as renewable electricity capacity expands towards 2030 and beyond.

Government initiatives promoting renewable energy projects with energy storage components are supporting the development of a domestic market for battery systems.

Competitive bidding for battery storage projects, including those supported through viability gap funding mechanisms, is encouraging the deployment of larger installations.

The expansion of domestic manufacturing capacity will help establish an industrial ecosystem capable of supplying equipment for these projects.

Premier Energies’ proposed 12 GWh facility is aligned with this emerging demand for locally manufactured battery storage products.

Domestic Battery Manufacturing Supports Make in India

The development of battery energy storage manufacturing facilities is an important component of India’s efforts to strengthen domestic production capabilities in advanced energy technologies.

Large-scale battery storage systems incorporate several specialised components, including battery cells, modules, power conversion systems, control electronics, cooling equipment and protective enclosures.

Manufacturing and assembling these systems within India can support the development of domestic industrial capabilities and encourage participation by local component suppliers.

The proposed Premier Energies–RCT joint venture will establish manufacturing operations focused on the production and assembly of complete battery energy storage products.

This approach can create opportunities for Indian companies involved in electrical engineering, electronics manufacturing, metal fabrication, industrial automation and power management technologies.

Domestic manufacturing also contributes to the development of technical expertise in equipment assembly, quality assurance, testing and industrial operations.

India’s Make in India initiative places emphasis on strengthening manufacturing capabilities, encouraging investment and developing competitive industrial supply chains.

The expansion of battery storage manufacturing complements these objectives by supporting the production of technologies required for modern electricity infrastructure.

The planned Telangana facility will add to India’s growing manufacturing base in renewable energy and associated equipment.

Energy Storage Manufacturing Creates Opportunities for Technology Development

The growth of battery energy storage manufacturing creates opportunities for research, engineering and technological innovation across several industrial disciplines.

Battery systems require sophisticated management technologies to monitor temperature, voltage, current and the state of charge of individual battery modules.

Battery Management Systems play a central role in maintaining safe operation and ensuring that charging and discharging processes remain within the equipment’s operating limits.

Power Conversion Systems enable battery storage facilities to interact with alternating-current electricity networks by converting electricity between alternating and direct current.

Thermal management technologies help regulate battery temperatures, while digital energy management platforms coordinate the operation of storage systems with electricity generation and consumption.

Advances in these technologies contribute to improved system efficiency, reliability, operational safety and service life.

The development of manufacturing facilities provides a foundation for building technical capabilities in equipment integration, system testing, production engineering and quality management.

As India’s domestic energy storage market expands, these capabilities can support the emergence of specialised manufacturers and technology providers serving different parts of the battery storage value chain.

Telangana Manufacturing Project Strengthens India’s Clean Energy Industry

The proposed 12 GWh battery storage manufacturing facility at Seetharampur represents a significant industrial investment initiative in Telangana’s emerging clean energy manufacturing ecosystem.

The initial 6 GWh phase planned for FY2027–28 will establish the first stage of the joint venture’s production capabilities, with further expansion envisaged towards the full manufacturing capacity.

The facility will manufacture battery storage systems for residential, commercial, industrial and utility-scale customers, addressing applications ranging from distributed solar installations to large electricity networks.

The partnership combines Premier Energies’ established presence in renewable energy manufacturing with RCT Group’s participation in energy storage technologies.

The agreement also provides an operational and corporate framework for developing the project through a dedicated joint venture company.

By expanding into battery energy storage manufacturing, Premier Energies is strengthening its involvement in technologies that complement photovoltaic electricity generation and support the wider adoption of renewable energy.

Premier Energies Advances India’s Battery Storage Manufacturing Capabilities

Premier Energies’ joint venture with Germany’s RCT Group marks an important expansion of India’s domestic battery energy storage manufacturing sector.

The agreement signed on October 15, 2026, establishes the framework for developing a 12 GWh manufacturing facility in Telangana, beginning with a planned 6 GWh phase during FY2027–28.

The project brings together Indian manufacturing capabilities and international industrial cooperation to develop battery storage products for residential, commercial, industrial and utility-scale applications.

The initiative also strengthens Premier Energies’ diversification beyond solar photovoltaic equipment into technologies that support renewable power integration and modern electricity infrastructure.

As India continues expanding solar and wind electricity generation, battery energy storage systems will play an increasingly important role in supporting grid reliability, electricity management and efficient renewable energy utilisation.

The development of the Telangana facility will contribute to India’s growing clean energy manufacturing ecosystem and strengthen the country’s capabilities in producing advanced electricity storage equipment.

Through industrial investment, technological cooperation and domestic manufacturing expansion, Premier Energies and RCT Group are contributing to India’s transition towards a more diversified and technologically advanced renewable energy industry.

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References

1. Premier Energies Limited – Official Stock Exchange Disclosure, October 15, 2026: Execution of Share Allotment cum Shareholders Agreement for 12 GWh BESS Joint Venture — Reproduction of the company’s official filing, including ownership arrangements, manufacturing plans and the project timeline.
2. Premier Energies Limited – Official Stock Exchange Disclosure, September 10, 2026: Binding Term Sheet for 12 GWh Battery Energy Storage Manufacturing Joint Venture
3. Premier Energies Limited – Official Press Release, September 10, 2026: Premier Energies and RCT India Form Joint Venture for 12 GWh BESS Manufacturing
4. Premier Energies Limited – Corporate Announcements: Official BSE and NSE Disclosures
5. Premier Energies Limited: Official Corporate Website

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