8 kW Single-Phase Hybrid Solar Inverter 4 MPPT GoodWe GW8K-EHA-G20

The GoodWe GW8K-EHA-G20 single-phase hybrid solar inverter is an 8 kW solution designed for residential photovoltaic installations with energy storage. It is part of GoodWe’s ESA series and combines 4 independent MPPT trackers, high-voltage battery management, Backup emergency output, smart connectivity, and IP66 protection, enabling efficient management of solar production, household consumption, the battery, and energy exchange with the grid.

Thanks to its 4 MPPTs with one input per MPPT, the GW8K-EHA-G20 offers great flexibility for photovoltaic systems with panels distributed across different orientations or irradiance conditions. It supports up to 16 kW of PV input power, equivalent to 200% oversizing compared with its 8 kW nominal AC power.

8 kW single-phase hybrid inverter

The GoodWe GW8K-EHA-G20 provides a nominal grid output power of 8 kW and a nominal and maximum apparent power of 8 kVA. It is designed for single-phase 220, 230, or 240 V grids at 50/60 Hz.

• Nominal AC power: 8 kW.
• Nominal apparent grid power: 8 kVA.
• Maximum apparent grid power: 8 kVA.
• Nominal AC voltage: 220 / 230 / 240 V.
• Configuration: single-phase L/N/PE.
• AC voltage range: 170-280 V.
• Nominal frequency: 50/60 Hz.
• Power factor: approximately 1, adjustable from 0.8 capacitive to 0.8 inductive.
• THDi: less than 3%.

4 MPPTs for flexible photovoltaic installations

One of the main strengths of the GW8K-EHA-G20 is the inclusion of 4 independent MPPT trackers, each with its own PV string. This configuration makes it possible to work with panel groups that have different orientations, tilts, or irradiance conditions, making it easier to take advantage of complex rooftops.

• Number of MPPTs: 4.
• Strings per MPPT: 1 / 1 / 1 / 1.
• Maximum PV input power: 16 kW.
• Maximum input voltage: 600 V DC.
• MPPT operating range: 40-560 V.
• MPPT range at nominal power for the 8 kW model: 170-500 V.
• Nominal input voltage: 400 V.
• PV start-up voltage: 50 V.
• Maximum current per MPPT: 20 A.
• Maximum short-circuit current per MPPT: 26 A.

The high admissible current of 20 A per MPPT makes it suitable for today’s high-power photovoltaic modules with high operating current.

Up to 200% PV oversizing

GoodWe allows up to 16 kW of photovoltaic power to be connected to the GW8K-EHA-G20 model, doubling the 8 kW AC output rated power. This oversizing margin helps increase production during lower irradiance hours and provides additional energy for direct consumption or battery charging.

The final configuration of the PV array must always respect the maximum voltage, current, and power limits established by GoodWe for each MPPT.

Ready for high-voltage batteries

As a hybrid inverter, the GW8K-EHA-G20 includes a dedicated input for high-voltage batteries. The system works with a nominal battery voltage of 380 V and supports an operating range of 350 to 550 V.

• Number of battery inputs: 1.
• Nominal battery voltage: 380 V.
• Voltage range: 350-550 V.
• Start-up voltage without PV production: 380 V.
• Maximum continuous charging current: 31.6 A.
• Maximum continuous discharging current: 23.2 A.
• Maximum charging power: 12 kW.
• Maximum discharging power: 8.8 kW.
• Communication with BMS: CAN.

This capability makes it possible to store surplus solar energy for later use during hours without solar production, reduce energy drawn from the grid, and increase the installation’s self-consumption level.

Integrated 8 kVA Backup output

The GoodWe GW8K-EHA-G20 incorporates a Backup output designed to keep the intended loads powered when a grid failure occurs, provided the system has the necessary configuration and energy storage.

• Nominal Backup apparent power: 8 kVA.
• Maximum Backup power: 8 kVA in continuous operation.
• Peak power: up to 16 kVA for 10 seconds.
• Maximum power via bypass: 14.5 kVA.
• Backup voltage: 220 / 230 / 240 V.
• Frequency: 50/60 Hz.
• THDv with linear load: less than 3%.

Ultra-fast Backup switching

The ESA series is designed to provide a Backup switchover time of less than 4 ms. This fast response helps maintain power to many sensitive household loads during a grid interruption, always within the power and configuration conditions established for the system.

The inverter also features a high internal bypass capacity, aimed at enabling whole-home backup solutions when the installation is properly designed for this purpose.

High conversion efficiency

The GW8K-EHA-G20 achieves a maximum efficiency of 97.5% and a European efficiency of 96.8%, helping to make efficient use of the energy generated by the photovoltaic modules.

• Maximum efficiency: 97.5%.
• European efficiency: 96.8%.
• Maximum battery-to-AC efficiency: 97.8%.

Integrated AFCI protection

The inverter includes AFCI protection for detecting electrical arcs on the PV side. This function increases installation safety by helping identify certain arc faults that may occur in the wiring or connections of the solar array.

The ESA series also incorporates different electronic monitoring and protection systems for the PV, battery, and grid sections.

Integrated electrical protections

• PV string current monitoring.
• PV insulation resistance detection.
• Residual current monitoring.
• PV reverse polarity protection.
• Battery reverse polarity protection.
• Anti-islanding protection.
• AC overcurrent protection.
• AC short-circuit protection.
• AC overvoltage protection.
• Type II DC surge protection.
• Type III AC surge protection.
• Integrated AFCI.
• Integrated remote shutdown.
• Optional RSD.

WiFi, LAN, Bluetooth and RS485

The inverter includes multiple communication options to facilitate commissioning, monitoring, and energy system management.

• WiFi: yes.
• LAN: yes.
• Bluetooth: yes.
• RS485: yes.
• Communication with BMS: CAN.
• Protocols: Modbus RTU and Modbus TCP.
• Local interface: LED indicators.
• Control and monitoring: via compatible GoodWe app.

These communications make it possible to check installation performance, photovoltaic production, consumption, battery status, and other system parameters, as well as facilitate certain configuration tasks.

Smart energy management

The ESA series is ready to work with GoodWe energy management solutions, allowing optimization of the use of photovoltaic production and storage. The system can manage battery charging and discharging according to generation, consumption, and the selected configuration.

GoodWe also includes functions aimed at optimization through dynamic tariffs and smart EMS systems, expanding the possibilities for economic energy management in compatible installations.

IP66 protection for indoor or outdoor installation

The GW8K-EHA-G20 has an IP66 protection rating, offering high resistance to dust and water ingress. This allows the unit to be installed both indoors and in suitable outdoor locations, always following GoodWe’s instructions regarding placement, ventilation, and safety clearances.

Natural convection cooling

The inverter uses natural convection cooling, without the need for fans during normal operation. This design reduces the number of moving parts and promotes quiet operation.

• Cooling method: natural convection.
• Noise level: 35 dB or less.

Wide operating temperature range

The GoodWe GW8K-EHA-G20 is designed to operate in demanding environmental conditions and supports a temperature range from -35 °C to +60 °C. From +40 °C onward, automatic power derating may occur to keep the unit within its thermal limits.

• Operating temperature: -35 °C to +60 °C.
• Power derating due to temperature: from +40 °C.
• Relative humidity: 0-95%.
• Maximum altitude: 4,000 m.
• Performance derating due to altitude: above 2,000 m.

Compact design and flexible mounting

The GW8K-EHA-G20 power module has a compact format for its performance level. It can be installed on a wall or floor depending on the system configuration.

• Width: 800 mm.
• Height: 300 mm.
• Depth: 270 mm.
• Weight: 26 kg.
• Mounting: wall-mounted or floor-standing.
• Protection rating: IP66.

Technical specifications of the GoodWe GW8K-EHA-G20

• Brand: GoodWe.
• Series: ESA.
• Model: GW8K-EHA-G20.
• Type: hybrid solar inverter.
• Grid configuration: single-phase.
• Nominal AC power: 8 kW.
• Nominal apparent power: 8 kVA.
• Maximum PV power: 16 kW.
• Maximum PV voltage: 600 V.
• MPPT range: 40-560 V.
• MPPT range at nominal power: 170-500 V.
• Start-up voltage: 50 V.
• Number of MPPTs: 4.
• Strings per MPPT: 1 / 1 / 1 / 1.
• Maximum current per MPPT: 20 A.
• Short-circuit current per MPPT: 26 A.
• Battery range: 350-550 V.
• Nominal battery voltage: 380 V.
• Maximum charging current: 31.6 A.
• Maximum discharging current: 23.2 A.
• Maximum charging power: 12 kW.
• Maximum discharging power: 8.8 kW.
• Nominal Backup power: 8 kVA.
• Peak Backup power: 16 kVA for 10 seconds.
• Maximum bypass power: 14.5 kVA.
• Maximum efficiency: 97.5%.
• European efficiency: 96.8%.
• Maximum battery-to-AC efficiency: 97.8%.
• Communication: RS485, WiFi, LAN and Bluetooth.
• BMS communication: CAN.
• Protocols: Modbus RTU and Modbus TCP.
• AFCI: integrated.
• DC surge protection: type II.
• AC surge protection: type III.
• Cooling: natural convection.
• Noise level: ≤35 dB.
• Protection rating: IP66.
• Operating temperature: -35 °C to +60 °C.
• Dimensions: 800 x 300 x 270 mm.
• Weight: 26 kg.

A hybrid solution for self-consumption and storage

The 8 kW GoodWe GW8K-EHA-G20 stands out for bringing together solar production management, energy storage, grid connection, and emergency power supply in a single inverter. Its 4 independent MPPTs, up to 16 kW PV capacity, high-voltage battery input, and 8 kVA Backup provide high flexibility for residential self-consumption installations.

WiFi, LAN, Bluetooth, and RS485 connectivity, together with AFCI protection, IP66 rating, and quiet natural convection operation, complete a hybrid inverter ready for modern photovoltaic installations seeking to maximize self-consumption, incorporate storage, and provide energy backup during grid outages.

Important: this reference corresponds to the inverter module. Battery modules, meters, communication accessories, and other elements required to configure a complete installation must be checked and selected according to the system configuration and GoodWe’s current compatibility list.