The GoodWe ESA Series 5–30kW / 5–108kWh is a three-phase all-in-one energy storage system (ESS) that integrates the inverter, battery, and intelligent energy management into a single compact solution. Designed for residential and small commercial applications, it delivers a highly efficient, scalable, and future-ready solar + storage system.

Its pre-wired modular architecture combines inverter and battery into a unified design, significantly simplifying installation and reducing commissioning time. With flexible expansion options and AI-driven energy management, the ESA Series is built for modern energy optimisation and dynamic tariff control.

Key Features

• Brand: GoodWe
• Model: ESA Series GW5K-ETA-G20
• System Type: Three-phase hybrid solar inverter / All-in-One ESS
• Rated Power: 5kW (expandable system range 5–30kW)
• Battery Capacity Range: 5kWh to 108kWh
• MPPT: 4 independent MPPT trackers
• Integrated inverter + battery + EMS system
• WiFi connectivity included
• Includes 3 x CT clamps
• AI-driven Energy Management System (EMS)

---

Energy Storage & Scalability

• Modular battery design (5, 6*, 8, 9* kWh modules)
• Supports up to 12 battery modules per system
• Total expandable storage up to 108kWh
• Flexible mixing of battery capacities (new and existing batteries supported)
• Ideal for scalable residential and small commercial installations
• *6kWh and 9kWh modules coming soon

---

Performance & Smart Operation

• Up to 1C charge/discharge rate for fast energy cycling
• Intelligent EMS with tariff optimisation and load management
• Up to 200% DC oversizing capability
• AC backup overload support
• Dual-port design for whole-home backup capability
• Seamless backup switching in less than 4ms
• Optimised energy flow between solar, battery, grid, and loads

---

Backup & Reliability

• EPS backup power functionality
• Supports whole-home backup systems
• Ultra-fast switching (<4ms) for uninterrupted supply
• Stable operation during grid outages
• Designed for critical load protection and energy security

---

Safety & Efficiency

• Six-layer protection system (cell to system level safety)
• High efficiency design for residential and C&I applications
• Operating noise as low as 30dB (at 25°C for 5–8kW range)
• Heating mode ensures operation in extreme cold down to -20°C
• IP66-rated protection for durability and outdoor installation

---

System Benefits

• Simplified installation with pre-wired modular design
• Faster commissioning and reduced installation time
• High flexibility for future expansion
• Lower lifecycle cost with 1C high-efficiency cycling
• Reliable long-term performance for residential and small commercial use

---

Summary

The GoodWe ESA Series 5–30kW is a next-generation all-in-one energy storage system combining hybrid inverter technology, scalable battery storage, and intelligent energy management. With fast backup switching, high efficiency, and flexible expansion up to 108kWh, it provides a powerful and future-proof solution for modern solar energy systems.