In 2026, the installed capacity of new energy storage systems in China continued to grow at a rapid pace. According to CNESA data, new installed capacity for new energy storage systems in China has maintained a growth rate of over 20% for several consecutive years, and the market size for prefabricated energy storage container shells exceeded 28 billion yuan. Market demand showed clear differentiation: grid-side large-capacity energy storage systems prioritize highly safe, standardized containers, while commercial and industrial distributed energy storage systems favor lightweight, compact, custom-made containers. Special environments such as offshore wind farms, high-altitude cold regions, and coastal tidal flats impose diverse and stringent requirements on enclosure corrosion resistance, wind pressure resistance, and thermal insulation. A single standardized product can no longer meet the industry’s full range of needs, and the energy storage enclosure manufacturing industry has officially entered a new phase of development characterized by “standardized foundations + flexible customization.”
Recently, leading domestic energy storage enclosure manufacturers have completed upgrades to their smart, flexible production lines, enabling customized bulk delivery of all categories of prefabricated energy storage enclosures. Products span four major series: standard container-based energy storage enclosures, small outdoor energy storage enclosures, integrated high-voltage power transformation and distribution prefabricated enclosures, and special corrosion-resistant enclosures for offshore wind power. Dimensions, compartment layout, protective configurations, temperature control interfaces, and corrosion resistance ratings can be flexibly adjusted according to customer project requirements, providing a one-stop solution to meet energy storage needs across multiple sectors, including new energy, power grids, commercial and industrial applications, and rail transit.
The core breakthrough of this upgrade lies in the establishment of a flexible, modular production system: the company has developed standardized, universal enclosure frame molds, with four functional modules—battery compartments, PCS compartments, cooling compartments, and fire suppression compartments—each produced using independent molds and capable of being freely combined and assembled; Sizes support standard 10-foot, 20-foot, and 40-foot containers as well as custom non-standard shapes. Internal cable trays, vibration-damping brackets, maintenance accessways, and grounding systems are adjusted as needed, balancing mass production efficiency with project-specific requirements. The delivery cycle for custom orders has been reduced to within 7 business days, significantly alleviating project timeline pressures for energy storage integrators.
Tailored enclosure solutions designed to address specific pain points in different application scenarios:
1. Lightweight energy storage enclosures for commercial and industrial use: Constructed from 2mm lightweight weather-resistant steel plates with simplified, non-redundant reinforcement structures, reducing self-weight by 25%. Suitable for rooftop installations at industrial sites and small-scale, scattered deployments on open grounds. Comes standard with a dehumidification and anti-condensation system to prevent equipment short circuits caused by moisture during the rainy season in southern China;
2. Specialized enclosures for coastal and offshore wind power energy storage: Featuring full hot-dip galvanization plus a thickened fluorocarbon flame-retardant coating, with additional seawater spray isolation baffles and salt fog collection and drainage channels. Wind pressure resistance is upgraded to Level 12, making them suitable for the high-salt-fog and high-humidity environments of offshore wind power energy storage platforms;
3. Prefabricated Energy Storage Containers for High-Altitude, Cold-Climate Regions: Featuring a double-layered, thickened thermal insulation structure, with mounting points for low-temperature preheating equipment added on both sides of the container. The tolerable temperature range has been expanded to -40°C to 65°C, making them suitable for high-altitude photovoltaic energy storage projects in Northwest and Southwest China;
4. Grid-side Large-Capacity Energy Storage Standard Containers: Reinforced load-bearing bases and multi-layered pressure-relief explosion-proof structures; standardized to the national 19-inch installation standard; compatible with both liquid-cooled and air-cooled heat dissipation systems; meeting the centralized procurement standards for 100-megawatt-class centralized energy storage power stations.
In terms of quality control, the enclosures for the entire series of prefabricated energy storage modules strictly comply with NB/T 10650-2024, “Technical Specifications for Prefabricated Container-Type Energy Storage Power Stations.” The entire production process—from raw material intake, sheet metal fabrication, welding inspection, anti-corrosion coating, sealing and protection, and whole-unit rain exposure—ensuring long-term stable outdoor operation.
Leveraging the advantages of standardized production capacity and in-depth customization services, the company’s prefabricated energy storage container enclosures have been supplied to energy storage projects in more than 30 provinces and municipalities across China, while also supporting export orders for photovoltaic energy storage systems to Southeast Asia and the Middle East. The products have gained widespread recognition from system integrators and new energy development companies for their stable protective performance, flexible customization capabilities, and high cost-effectiveness.