GoodWe GW8K-ES-C10 8kW Single-Phase Hybrid Solar Inverter 2 MPPT ES Uniq

The GoodWe GW8K-ES-C10 is a single-phase 8 kW hybrid solar inverter belonging to the ES Uniq series, developed for residential photovoltaic installations with energy storage. It integrates solar production management, low-voltage batteries, household consumption, grid connection, and a backup output in a single unit to keep selected loads powered in the event of a power outage.

This 8 kW version includes 2 independent MPPT trackers, supports up to 16 kW of PV input power, and works with 48 V lithium-ion or lead-acid batteries. Its powerful backup output, with UPS-type switching time below 4 ms, the ability to operate connected to or isolated from the grid, and parallel connection of up to 6 inverters make the ES Uniq a particularly flexible solution for self-consumption-oriented installations and greater energy independence.

Single-phase 8 kW hybrid inverter

The 8 kW GoodWe ES Uniq provides a rated output power of 8 kW and a rated apparent power of 8 kVA. In grid-connected operation, it can reach a maximum active power and maximum apparent power of 8.8 kW and 8.8 kVA respectively.

It is designed for single-phase 220, 230, or 240 V grids and operates at nominal frequencies of 50 or 60 Hz. Maximum grid output current reaches 40 A, and the power factor is adjustable from 0.8 capacitive to 0.8 inductive.

2 MPPTs for greater solar panel flexibility

The GW8K-ES-C10 incorporates 2 independent MPPT trackers, allowing the PV array to be divided into groups with different orientations, tilts, or irradiance conditions.

In the 8 kW model, the first MPPT supports two strings and a combined maximum current of 32 A, while the second has one input with a maximum current of 16 A. The maximum current per string is 16 A.

This configuration is especially useful in homes with roofs divided into different slopes, since the two PV groups can independently search for their maximum power point.

Up to 16 kW of PV input power

GoodWe allows a maximum PV power of up to 16 kW to be connected to the 8 kW model, equivalent to a 200% input oversizing compared to the inverter's rated power.

The maximum PV input voltage is 600 V, the MPPT operating range extends from 60 to 550 V, the nominal input voltage is 360 V, and the inverter can start operating from a start-up voltage of 58 V.

This wide sizing margin makes it possible to design installations that can better take advantage of solar generation during periods of moderate irradiance, always respecting the maximum voltage and current limits established by GoodWe.

Compatible with 48 V low-voltage batteries

As a hybrid inverter, the ES Uniq includes a dedicated energy storage input and is compatible with both lithium-ion batteries and suitable lead-acid batteries.

The nominal battery voltage is 48 V and the operating range is between 40 and 60 V, with a start-up voltage of 44.2 V. This allows the use of low-voltage storage solutions, including compatible GoodWe batteries and other models listed in the manufacturer's official compatibility list.

The GW8K-ES-C10 supports a maximum continuous charge and discharge current of 160 A, with a maximum charging power of 8 kW and a maximum discharging power of 8.8 kW.

Backup output with UPS switching time below 4 ms

One of the main features of the GoodWe ES Uniq is its backup output. In the event of a power outage, the system can quickly switch to backup operation to keep selected loads powered, provided there is sufficient energy from the battery or PV array.

GoodWe specifies a UPS-equivalent switching time of less than 4 ms for the current generation of the ES Uniq series, minimizing interruption to devices connected to the backup output.

The rated backup apparent power of the 8 kW model is 8 kVA. Without grid connection, it can provide up to 8.8 kVA under normal operation and support peaks of up to 16 kVA for 10 seconds, making it easier to power certain loads with high starting currents.

Grid-connected and off-grid operation

The inverter can be used both in grid-connected installations and in off-grid configurations. This flexibility makes it possible to design systems focused on conventional self-consumption, installations with energy backup, or solutions intended to provide greater independence from the grid.

The ES Uniq series is also compatible with microgrid operation, expanding the configuration possibilities for projects that need to manage different sources and loads in a coordinated way.

3-in-1 multifunction port

GoodWe incorporates a 3-in-1 port in the ES Uniq series designed to increase installation flexibility. This interface can be used to integrate a generator, manage smart loads, or connect a compatible grid-tied PV inverter, depending on the selected configuration.

In the 8 kW model, the generator input supports a rated apparent power of 8 kVA and a maximum apparent power of 8.8 kVA.

Parallel connection of up to 6 inverters

The ES Uniq series allows up to 6 inverters to be connected in parallel in both grid-connected and off-grid operation. This feature makes it easier to expand system power as energy needs increase.

The parallel operation capability also makes it possible to design modular installations in which the initial power can later be increased using compatible equipment.

Efficiency and maximum power point tracking

The 8 kW GoodWe ES Uniq achieves a maximum efficiency of 97.6% and a European efficiency of 96.2%. Maximum efficiency in the battery-to-grid process is 95.5%.

The MPPT tracking system has an efficiency of 99.9%, enabling precise tracking of the maximum power point available in the connected PV strings.

Integrated protections for the installation

GoodWe equips this inverter with different protection and monitoring systems designed to supervise both the PV array and the system's electrical connection.

• PV string current monitoring: integrated.
• PV insulation resistance detection: integrated.
• Residual current monitoring: integrated.
• DC reverse polarity protection: integrated.
• Anti-islanding protection: integrated.
• AC overcurrent protection: integrated.
• AC short-circuit protection: integrated.
• AC overvoltage protection: integrated.
• DC switch: integrated.
• DC surge protection: Type III.
• AC surge protection: Type III.
• AFCI: integrated according to the current EMEA datasheet.
• Remote shutdown: integrated.
• Rapid shutdown: optional.

AFCI for arc fault detection

The current EMEA documentation for the ES Uniq includes AFCI for detecting arc faults in the PV circuit. This technology is designed to identify conditions associated with electrical arcs and act on the system to increase installation safety.

WiFi, LAN, Bluetooth, and RS485

The GoodWe GW8K-ES-C10 incorporates different interfaces for monitoring and communication. It features RS485 and connectivity via WiFi, LAN, and Bluetooth, allowing the inverter to be integrated into GoodWe's compatible energy management tools.

Supported communication protocols include Modbus RTU and Modbus TCP. Communication with the battery management system BMS is carried out via CAN.

LCD display and app control

The inverter includes an LCD display that makes local system consultation and configuration easy. It also allows access via WLAN and a compatible app to monitor the installation and make different adjustments.

Through GoodWe's monitoring ecosystem, it is possible to view the main energy flows of the installation, including solar generation, storage, consumption, and interaction with the electrical grid.

IP66 protection for versatile installation

The ES Uniq has an IP66 protection rating, providing high enclosure resistance against dust and water ingress. It is designed for wall mounting and can be used both indoors and in suitable outdoor locations, always respecting the conditions established by GoodWe.

The operating temperature range is between -35 and +60 °C, it supports relative humidity of up to 95%, and it can operate at a maximum altitude of 3,000 meters.

Smart cooling

The model uses an intelligent ventilation cooling system. Thermal management allows the inverter's cooling to adapt to operating conditions, helping keep its components within the intended thermal range.

Technical specifications of the GoodWe GW8K-ES-C10

• Brand: GoodWe.
• Commercial reference: GW8K-ES-C10.
• EMEA reference for the equivalent model: GW8000-ES-C10.
• Series: ES Uniq.
• Type: hybrid solar inverter.
• Grid: single-phase.
• Rated output power: 8 kW.
• Rated grid apparent power: 8 kVA.
• Maximum active power: 8.8 kW.
• Maximum grid apparent power: 8.8 kVA.
• Rated output voltage: 220 / 230 / 240 V.
• Nominal frequency: 50 / 60 Hz.
• Maximum grid output current: 40 A.
• Power factor: approximately 1, adjustable from 0.8 capacitive to 0.8 inductive.
• Maximum total harmonic distortion: <3%.
• Number of MPPTs: 2.
• Strings per MPPT: 2 / 1.
• Maximum PV input power: 16 kW.
• PV oversizing: up to 200%.
• Maximum PV voltage: 600 V.
• MPPT operating range: 60-550 V.
• PV start-up voltage: 58 V.
• PV nominal voltage: 360 V.
• Maximum input current per MPPT: 32 / 16 A.
• Maximum current per string: 16 A.
• Maximum short-circuit current per MPPT: 48 / 24 A.
• Battery type: lithium-ion / lead-acid.
• Nominal battery voltage: 48 V.
• Battery voltage range: 40-60 V.
• Battery start-up voltage: 44.2 V.
• Number of battery inputs: 1.
• Maximum continuous charge current: 160 A.
• Maximum continuous discharge current: 160 A.
• Maximum battery charging power: 8 kW.
• Maximum battery discharging power: 8.8 kW.
• Rated backup power: 8 kVA.
• Maximum backup power without grid: 8.8 kVA.
• Backup power peak: up to 16 kVA for 10 s.
• Backup switching time: <4 ms.
• Rated generator input power: 8 kVA.
• Maximum generator input power: 8.8 kVA.
• Maximum efficiency: 97.6%.
• European efficiency: 96.2%.
• Maximum battery-to-grid efficiency: 95.5%.
• MPPT efficiency: 99.9%.
• Communication with BMS: CAN.
• Communications: RS485, WiFi, LAN, and Bluetooth.
• Protocols: Modbus RTU and Modbus TCP.
• User interface: LCD, WLAN, and app.
• AFCI: integrated according to current EMEA datasheet.
• Remote shutdown: integrated.
• Rapid shutdown: optional.
• DC surge protection: Type III.
• AC surge protection: Type III.
• Protection rating: IP66.
• Cooling: intelligent ventilation.
• Operating temperature: -35 to +60 °C.
• Maximum relative humidity: 95%.
• Maximum altitude: 3,000 m.
• Topology: transformerless.
• Mounting: wall-mounted.
• Dimensions: 560 x 444.5 x 226 mm.
• Weight: 27 kg.
• Parallel operation: up to 6 compatible inverters.
• Microgrid operation: yes.

Hybrid inverter for self-consumption and storage

The GoodWe GW8K-ES-C10 combines 8 kW single-phase power with 48 V battery storage, two MPPTs, and up to 16 kW of PV input. These features make it possible to configure self-consumption systems capable of storing surplus solar energy for use when PV production does not cover household demand.

Its powerful backup output, switching time below 4 ms, generator and smart load integration, the ability to connect up to six inverters in parallel, and microgrid operation significantly expand the possibilities compared with a conventional photovoltaic inverter.

With IP66 protection, AFCI, WiFi/LAN/Bluetooth connectivity, LCD display, and broad compatibility with low-voltage batteries, the 8 kW GoodWe ES Uniq is a particularly complete solution for residential projects seeking to combine solar production, storage, electrical backup, and intelligent energy management.

Important: the battery, PV modules, external protections, and other system components must be compatible with the inverter and sized in accordance with GoodWe specifications and applicable regulations. For third-party batteries, the manufacturer's current compatibility list should be consulted.