Deye Integrated ESS Storage Solution Aims To Power Reliable Off-Grid Applications in India

Ningbo Deye Energy Storage Technology Co., Ltd., established in 2020 as a subsidiary of Deye said that its Integrated ESS Storage Solution has worked well in India for providing reliable green energy. In a statement, the company said that it focusses on delivering reliable and efficient energy storage solutions worldwide. With a presence in more than 50 countries and supported by overseas service centres, the company has built a strong reputation in the global renewable energy sector, it said. 

In India, Ningbo Deye Inverter Technology began operations in 2018 through branding partners, with the Deye brand officially launched in 2022. Since then, Deye India has achieved 5 GW of installations as of October 2025 and is targeting 6 GW by 2027, reflecting growing market acceptance and customer confidence.

ESS & C&I Consumers

Deye’s all-in-one integrated solution is designed to meet the evolving requirements of Commercial & Industrial (C&I) applications by combining energy storage, seamless power transition and intelligent energy management within a scalable, high-efficiency architecture.

A notable example of this capability is a successfully commissioned off-grid project in Coimbatore, India. The site lacked grid connectivity and required a continuous 100 kW AC load to support critical operations. A 160 kWp solar plant was already installed at the location. To ensure uninterrupted power supply and optimal solar utilisation, Deye deployed a comprehensive off-grid energy storage solution integrating the existing solar plant with a 430 kWh lithium battery bank.

This configuration enables stable operation of the 100 kW load and provides approximately four hours of backup at full load. The integrated Battery Management System (BMS) continuously monitors voltage, current and temperature to ensure safety and performance. The lithium battery system is designed for approximately 6,000 cycles, delivering long service life and reduced maintenance.

Key Features of the Integrated Solution

• All-in-One Integration: Combines EMS, PCS and BMS for seamless, optimised performance.
• Scalable Architecture: PCS available in 100 kW / 125 kW configurations, expandable up to 2 MW / 4.3 MWh (on-grid) and 1 MW / 2.15 MWh (off-grid).
• Reliable LFP Battery Technology: Robust BOS-B design enhances durability and safety, including aerosol fire extinguishing.
• Intelligent Energy Management: Supports peak-valley optimisation, load tracking, zero-export operation and time-of-use charging.
• Fast Seamless Switching: STS module enables switching between grid, off-grid and diesel modes in under 10 ms, ensuring zero blackout.
• Diesel Generator Integration: VSG functionality enables smooth integration with existing diesel generators for future expansion.
• High PV Compatibility: Wide MPPT range (180–850 V) supporting up to 200 kW PV input with eight MPPT channels.
• High Efficiency: PCS efficiency up to 98.5% and MPPT efficiency above 99%.
• Durable Design: IP54 and C5 rated, designed to operate reliably from −20°C to +50°C.
• Overload & Unbalanced Load Support: Supports 110% overload and up to 50% rated power on a single phase.