11–35kV Energy Storage Prefab Substation Transformer

his Energy Storage Box Transformer is a complete, prefabricated substation engineered to meet the growing demands of energy storage systems in solar, wind, and microgrid applications. Built for voltages ranging from 11kV to 35kV, it integrates a power transformer, MV switchgear, low-voltage distribution, and EMS interface inside a sealed container, ensuring quick deployment, high protection level, and grid-friendly operation.

Key Features at a Glance

Application Scenarios

• Solar + Storage Projects: Enables seamless integration of PV inverters with grid
• Wind Farms: Support hybrid energy delivery and fast ramping
• Data Centers: Reliable backup power in containerized energy storage
• Industrial Microgrids: Balances load, frequency, and peak shaving
• EV Charging Stations: Facilitate power conditioning and peak demand control

Real Customer Feedback

• “We installed two 2.5 MVA units for a hybrid solar-storage project in Texas. Plug-and-play structure saved weeks of commissioning.”
— John P., Project Manager, Vistra Energy (Source: LinkedIn Energy Forum 2024)

• “Compatible with CATL LFP batteries and provided stable transformer output with low harmonic distortion.”
— Emily R., Energy Storage Engineer, Shell New Energies (Source: GreenTech Media)

• “We needed rapid deployment for a 20kV grid-tied ESS. The prefab substation from Wei Shoe delivered exactly that.”
— Dr. Anwar H., Technical Consultant, Masdar Clean Energy (Source: Expo CleanPower MEA)

• “The monitoring interface worked flawlessly with our SCADA. Detected abnormal heat rise instantly.”
— James O., Substation Engineer, EDF Renewables UK (Source: Project Technical Review, 2023)

• “Pre-integrated LV and MV gear reduced overall footprint by 40% compared to our previous on-site build.”
— Sophia K., System Architect, Iberdrola Spain (Source: Energy Storage Europe 2023)

Frequently Asked Questions

• What is the typical capacity range supported?
Our energy storage box transformers typically support 500kVA to 3150kVA, depending on your storage needs.

• Can it support lithium and sodium-ion batteries?
Yes, the unit is compatible with various BESS technologies, including LFP, NMC, and emerging sodium-ion systems.

• Is the transformer integrated or modular?
Both configurations are available—modular for flexibility, integrated for fast deployment.

• Can it operate in desert or marine environments?
Yes. Optional C5M coating, air conditioning, and enhanced sealing allow operation in harsh coastal or desert climates.

• Does it come with protection relays?
Yes, including differential protection, overcurrent, earth fault, and communication-enabled smart relays.

Why Choose Wei Shoe's Prefabricated Substations?

Unlike generic energy storage containers, our energy storage box transformer is designed from the ground up to integrate grid-grade insulation, advanced thermal management, and utility-compliant protection. This ensures faster interconnection approval, reduced commissioning time, and minimal site work.

Explore More Prefab Substations

Discover additional configurations in our
👉 Box-Type Substation Series
for renewable energy, grid-tie, and industrial uses.

Manufacturer Info

Wei Shoe Electric Co., Ltd. specializes in prefabricated substations, power transformers, and MV/LV distribution systems with over 15 years of industry experience. Our factory is certified by ISO 9001, ISO 45001, and ISO 14001, serving energy customers in over 30 countries.

Author: Thor, Senior Electrical Engineer
📞 Tel: 86-0577-62788197
💬 WhatsApp: +86 159 5777 0984
📩 Email: [email protected]