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GoodWe 20kW Three Phase ET SERIES Solar Hybrid Inverter IP66 GW20K-ET | Solar Heroes - Battery Hybrid, Off Grid & Grid Connect Solar System Specialists

GoodWe 20kW Three Phase ET SERIES Solar Hybrid Inverter IP66 GW20K-ET


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The ES G2 series is compatible with a range of batteries, including the GoodWe Lynx Home U

UPS level switching <10ms

Smart home integration

Parallel connection

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GoodWe GW20K-ET hybrid inverter ET series (DC/WIFI/3P METER)

The trend towards more and more powerful PV modules influences the overall requirements of a PV system. At the forefront of development, GoodWe ET inverters efficiently meet the needs of larger residential and commercial properties with powerful backup power, peak shaving and load management for optimized autonomy and reduced energy costs. The ET series can be combined with numerous HV batteries. GoodWe’s ET-plus series offers three-phase hybrid inverters for high-voltage batteries, which enable even more independence in energy supply and maximize self-consumption through intelligent control of loads and higher charging and discharging performance. The ET series has a power range of 15 kW, 20 kW, 25 kW and 30 kW. It also has a back-up function with an uninterrupted switching time.


Capable of emergency power

  • Emergency power with uninterrupted switching < 10 ms.


Highest security standards

  • Integrated surge protection type II on the DC side.
  • Protection class IP66.


Optimized energy autonomy

  • Wide battery voltage range (200 – 800V).
  • Supports dynamic active power limitation and load visualization.


Smart and efficient operation

  • Supports smart home interactions via different communication protocols.


The GoodWe ET 15-30 series is designed for large PV projects in the residential sector and for small projects in the commercial sector. The highest inverter output on the AC side is 29.9 kVA. A central mains and system protection is not required. The GoodWe high-voltage hybrid inverter has an integrated switch-over device for backup power supply. This enables the inverter to still supply the house with 3-phase emergency power in the event of a power outage. The hybrid inverter is black-start capable and can be recharged with solar power.


Product advantages

  • Integrated switchover device for backup power
  • Black start capability
  • Peak shaving function
  • AC charge-capable
  • DC overvoltage protection type 2 integrated
  • Direct connection to a ripple control receiver
  • AC overvoltage protection


Product features GW20K-ET

  • Mains connection: 3 phase
  • AC power: 20,0 kVA
  • 20.0 kW emergency power through separate outlet
  • MPP tracker: 2
  • String connections per MPPT: 2
  • Max. Input current per MPPT: 30 A
  • Max. Short-circuit current per MPPT: 38 A
  • Battery connection for high-voltage battery (GoodWe, BYD)
  • Communication: RS485, CAN, Wi-Fi, Bluetooth
  • Potential-free contact available (programmable via PV-Master APP) (SG-Ready)
  • 3-phase smart meter included
  • WiFi module included
  • Dimensions: 520 x 660 x 220 mm (HxWxD)
  • Protection class: IP66
  • Weight: 48.0 kg


Battery compatibility

  • GoodWe Lynx Home F, GoodWe Lynx Home F Plus, BYD HVM/HVS



PV string input data:
Max. PV generator power:30000 W1)
Max. Input Voltage1):1000 V2)
MPP voltage range:200~850 V
Rated input voltage:620 V
Turn on voltage:200 V
Max. Input current per MPP tracker30 A
Max. Short-circuit current per MPP tracker38 A
Number of MPPTs:2
Number of strands per MPPT:2 / 2


Battery input data:
Battery type:Li-Ion
Battery Voltage:500V
Battery Voltage:200~800V
Max. Continuous charge current:50 A
Max. Continuous discharge current:50 A
Max. Charge Power:20 kW
Max. Discharge Power:20 kW


Backup Data
Backup Power Rated Apparent Output Power:20 kVA
Max. Apparent output power3):20000 VA (24000@60s, 32000@3s)
Max. Output Current:30.3 A (36.4@60s, 48.5@3s)


General Data
Dimensions (W / H / D):520 x 660 x 220 mm
Weight:48 kg
Operating temperature range:-35 ~ 60 °C
Noise emission (normal case):< 45 dB
Communication (BMS / meter / portal):RS485, CAN / RS485 / WiFi / 4G


1)Max. Input power (W), non-continuous for 1.5* normal power.
2)For 1000 V system, the maximum working voltage is 950 V.
3)Can only be achieved if PV and battery power is sufficient.


GoodWe ET SERIES 15-29.9kW Datasheet


About GoodWe

GoodWe is a leading, strategically-thinking enterprise which focuses on research and manufacturing of PV inverters and energy storage solutions. With an average monthly sales volume of 30,000 pieces in 2018 and 12 GW installed in more than 100 countries, GoodWe solar inverters have been largely used in residential rooftops, commercial systems, and energy storage systems. GoodWe ranked as World Top 10 solar inverter manufacture by Bloomberg, IHS & GTM.  GoodWe benchmarks its success on the success achieved by its customers by identifying and integrating the most advanced components and techniques available while offering an unparalleled after-sales service.

GoodWe has set up an integrated service system for pre-sale, in-sale and after-sale and has established service centers worldwide. The company has developed a concept of workshops which aim to offer global support to all customers including project consulting, technical training, onsite support and after-sales service.

As a stable, bankable company, GoodWe has built its corporate reputation by achieving sustainable growth in every market it operates in. A prudent, step-by-step approach of strategic growth and consolidation offers longevity, profitable growth and increased market share; a business model also adopted by some of the world’s leading renewable companies.


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