Envision launches modular BESS platform based on 750+ Ah cell

China’s Envision Energy has introduced its latest battery energy storage innovation: a comprehensive portfolio of modular configurations under the Gen 8 Scalable Platform, unveiled at its Tech Day in Beijing.

Building on the skid-based modular design of Generation 6, the Gen 8 platform offers on-site flexibility and reduces balance-of-plant (BoP) work. It also advances the energy density improvements of Generation 7’s 5 MWh container by integrating a new 750+ Ah cell.

By combining high energy density with a lighter, logistics-friendly 10-foot modular unit, the Gen 8 platform is adaptable to diverse project sites, without compromising transport, installation, or operational efficiency. It supports 6 MWh, 8 MWh, 10 MWh, 12 MWh and potentially larger configurations per unit and applications exceeding four hours of energy storage.

Each unit weighs under 29 tons, enabling smooth road transport even in regions with strict bridge or axle limits. The lightweight design provides greater flexibility: lower-tonnage transport vehicles and cranes can be used, reducing equipment requirements, overall project costs, and land footprint. Alternatively, higher-tonnage cranes can install multiple units without repositioning, shortening installation and commissioning time by up to 30%, according to the manufacturer.

Envision was one of the first manufacturer to integrate high-capacity cells into a 20-foot container. In September last year, the company unveiled an 8 MWh system featuring 700 Ah lithium iron phosphate (LFP) battery cells. However, this container weighs around 55 tons, creating logistical challenges and exceeding road weight limits in many countries worldwide.

Recognizing these constraints, the battery storage industry has been moving toward solutions that not only increase energy density but also rethink system design – shifting away from the traditional 20-foot container format toward more modular, scalable architectures. Several leading players, including Canadian Solar’s e-Storage, Fluence, BYD, and Tesla, have since introduced their own versions of these modular utility-scale systems.

According to Envision, each of its modular units built on the high-capacity 750+ Ah cell platform delivers greater energy density, a 26% smaller footprint for typical 4-hour systems, and 12% lower auxiliary power consumption, lowering project costs and extending service life. These efficiencies can improve the internal rate of return (IRR) by an estimated 1% for a 100 MW / 4-hour project compared to a 5 MWh baseline.

Integrated with Envision’s EnOS intelligent OT–IT ecosystem, the Gen 8 platform offers end-to-end control through SCADA, EMS, and Hybrid PPC solutions for real-time management, predictive maintenance, and revenue optimization. Cloud-enabled fleet management leverages machine learning to enhance performance, extend system life, and improve financial returns. Advanced analytics provide early detection of thermal and electrical anomalies, while predictive maintenance and adaptive learning minimize downtime and maintenance costs. Accurate SoC/SoE forecasting and optimized dispatch further improve revenue and project profitability.

In addition to the new liquid-cooled DC container solution, Envision unveiled a second 10 MVA configuration, featuring four parallel-coupled 2.5 MW power conversion system (PCS) units. Designed for extreme conditions, this modular PCS operates reliably from -30°C to +55°C, meeting IP55 and C5 anti-corrosion standards to withstand salt, humidity, and harsh outdoor environments. Low-noise technology (≤55 dB(A)) with optimized aerodynamics and control algorithms minimizes airflow resistance and fan noise, making it suitable for sound-sensitive sites.

“Rather than a single product, this series offers a complete family of solutions, giving our customers the flexibility to design projects that meet their specific needs while maintaining the highest levels of reliability and performance,” said Kevin Huang, senior vice president and president of the energy storage product line at Envision Energy.