Description
Whole-home backup on a 63 A internal bypass.
The GW10K-ETA-G20 is GoodWe's 10 kW ESA G20 model: 10 kVA rated backup, 20 kW PV on four 21 A trackers, 11.0 kVA continuous off-grid and 20.0 kVA for 10 s.
- 10 kW rated AC, 20 kW PV, 4 MPPTs at 21 A
- Battery window 700-950 V, nominal 750 V, start-up 720 V
- Internal 63 A bypass, backup switching <4 ms
- Off-grid backup 11.0 kVA continuous, 20.0 kVA for 10 s
- IP66, Smart Fan Cooling, 34 kg, 800 x 340 x 270 mm
10 kVA Rated Backup
11.0 kVA continuous and 20.0 kVA for 10 s are separate off-grid limits; the 63 A bypass is a grid-path rating.
20 kW Maximum PV Input
Four 21 A MPPTs, one string each, on the 10 kW ESA G20 power module.
63 A Heavy-Duty Grid Bypass
Internal 63 A passthrough for whole-home backup on this 5-20 kW class.
Four-Tracker Column
The ESA G20 power module seats on BAT-D-G20 modules through the documented stacked connector.
More product details
The GW10K-ETA-G20 has a 63 A internal grid bypass; off-grid output has its own power limit. Backup rated apparent power is 10 kVA. Off-grid output holds 11.0 kVA continuous and 20.0 kVA for 10 s. Switching is under 4 ms.
- 10 kVA rated backup across L1, L2, and L3 on 230/400 V, 3L/N/PE.
- Four MPPTs, 21 A each, 20 kW PV max, 1000 V DC ceiling.
- Charge 10.0 kW at 13.4 A, discharge 11.0 kW at 14.7 A, into 700-950 V storage.
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Whole-home 10 kVA backup on the 63 A bypass path.
Internal 63 A passthrough is the whole-home route on this 5-20 kW class. Rated backup 10 kVA. Off-grid 11.0 kVA continuous, 20.0 kVA for 10 s. Switching under 4 ms. IP66, wall or floor mounted, -35 to +60°C.
11.0 kW maximum battery discharge at 14.7 A
One high-voltage battery input. Charge 10.0 kW at 13.4 A, discharge 11.0 kW at 14.7 A, 700-950 V, nominal 750 V, start-up 720 V. Battery-to-AC efficiency 98.0%.
20 kW PV input across four MPPTs
Four MPPTs, one string each, 21 A / 26 A Isc. Max PV 20 kW, MPPT window 120-950 V, start-up 150 V, max 1000 V. Four MPPTs on this 10 kW inverter.
Off-grid headroom is 20.0 kVA for 10 s
Off-grid reserve 11.0 kVA continuous, 20.0 kVA for 10 s, subject to PV and battery on the stack. Max efficiency 98.1%, European 97.2%. Cooling is Smart Fan Cooling.
Technical data
GoodWe ESA G20 · GW10K-ETA-G20 power module
20 kW maximum PV input and 10 kW rated three-phase AC on one ESA G20 power module.
Standing as the core 10 kW three-phase model in the ESA G20 modular range, the GW10K-ETA-G20 pairs 10 kW AC output with 63 A internal bypass. It stacks on BAT-D-G20 LFP modules in a 700-950 V window and takes up to 20 kW of rooftop PV on four MPPTs. Storage on the series runs 5-108 kWh, 12 modules, 6 per column.
Backup switching <4 ms.
- Rated 3-Phase Power
- 10 kW
- Maximum PV DC input
- 20 kW
- Internal Grid Bypass
- 63 A
- Backup Switching
- <4 ms
Inverter: AC Output & Backup
- Rated / max. power
- 10 kW rated and max (GW10K-ETA-G20).GoodWe ESA G20 series: 5–30 kW
- Rated current at 400 V
- 14.5 A per phase (3L/N/PE, 220/380 V or 230/400 V, 50/60 Hz)
- Max. apparent power from grid (passthrough)
- 43.5 kVA
- Backup nominal apparent power
- 10 kVA
- Backup max. apparent power (off-grid)
- 11.0 kVA continuous (20.0 kVA for 10 s)
- Backup max. current (off-grid)
- 22.8 A
- On/off-grid switching time
- <4 ms
- Power factor / THDi
- 0.8 leading - 0.8 lagging / THDi <3%
PV Input
- Max. PV input power
- 20 kW (200% oversizing vs. 10 kW AC)
- Max. input voltage
- 1000 V (standby above 950 V)
- MPPT operating voltage range
- 120-950 V; start-up 150 V; nominal input 750 V
- Number of MPPTs / strings
- 4 MPPTs, 1 string per MPPT
- Max. MPPT current / short-circuit current
- 21/21/21/21 A / 26 A per MPPT
Battery Interface & Modules
- Battery type / voltage window
- LFP (LiFePO4)700-950 V in the three-phase system, nominal 750 V, one battery input
- Max. charge / discharge power
- 10.0 kW / 11.0 kW (GW10K-ETA-G20)
- Max. continuous charge / discharge current
- 13.4 A / 14.7 A
- Module options
- GW5.1-BAT-D-G20/G21: 5.12 kWh rated / 5.0 kWh usableGW8.3-BAT-D-G20/G21: 8.32 / 8.0 kWh · GW6.0-BAT-D-G20: 6.0 / 5.8 kWh · GW9.0-BAT-D-G20: 9.0 / 8.7 kWh · usable-energy test: 5.1/8.3 G20/G21 at 100% DoD, 0.2P, 25±2°C · 6.0/9.0 G20 at 100% DoD, 0.4P, 25±2°C · beginning of life · actual energy varies with use and conditions
- Scalability
- GoodWe allows different BAT-D-G20/G21 module models in one system, specifies up to six modules per column and gives a 5–108 kWh system range. The documented combination of 5.1/8.3 G20 or G21 with 6.0/9.0 G20 disables battery heatingmixed systems with separate expansion require BMS and DCDC software V06 or above.
- Module cycle life
- 8,000 cycles on GW5.1-BAT-D-G20, GW8.3-BAT-D-G20, GW5.1-BAT-D-G21 and GW8.3-BAT-D-G2110,000 cycles on GW6.0-BAT-D-G20 and GW9.0-BAT-D-G20 · GoodWe specifies laboratory test conditions
- Module protection & fire safety
- IP66 modules, integrated aerosol fire extinguishingheating integrated on 6.0/9.0 modules for charging down to -20 C · 5.1/8.3 G20 charges from -18 C, G21 from +2 C
- Module dimensions / weight
- 800 x 326 x 270 mm per module57.5-79 kg depending on module
Efficiency
- Max. efficiency
- 98.1%
- European efficiency
- 97.2%
- Max. battery-to-AC efficiency
- 98.0%
System & Environment
- Ingress protection
- IP66
- Low-temperature operation
- ETA inverter: -35 to +60 °C. Battery charging limits depend on the selected module and heating filmthe documented mixed G20/G21 combination disables heating.
- Cooling method
- Smart Fan Cooling
- Integrated protections
- PV string current monitoring, insulation resistance detection, residual current monitoring, PV/battery reverse polarity, anti-islanding, AC over-current/short-circuit/over-voltage, integrated DC switch, Type II DC SPD (Type I+II optional), Type II AC SPD, AFCI optional, remote shutdown
Project fit
Where this model fits.
Scenarios that show which projects the GoodWe ESA GW10K-ETA-G20 (10 kW three-phase power module) belongs in, and what to verify before quoting.
10 kW three-phase ESA column on a 20 kW four-string roof
A three-phase house that wants the inverter and battery as one ESA column, with the array split across four strings and whole-home backup on the internal bypass.
The GW10K-ETA-G20 takes 20 kW of PV on four 21 A MPPTs, holds 10 kVA rated backup with 11.0/20.0 kVA off-grid, and stacks BAT-D-G20 modules in a 700-950 V window up to 6 per column.
- Boundary20 kW PV and 10 kW AC on this inverter.
- PV max 20 kW, 4 MPPTs; battery 700-950 V; 6 modules per column, 12 per system, 5-108 kWh.
Documents
GoodWe ESA Series 5-30kW Datasheet (EN) GoodWe ESA Series 5–30 kW User Manual (EN)Product questions
How many BAT-D modules can one GW10K-ETA-G20 column take?
GoodWe's ESA manual permits up to six battery modules in one column and up to twelve in the system. A separate expansion column needs the installation components shown for that layout. Specify the module model and column count in the bill of materials.
What backup load can the GW10K-ETA-G20 design support?
The GW10K-ETA-G20 has 10 kVA rated backup, with 11 kVA continuous and 20 kVA for 10 seconds listed as off-grid maxima. GoodWe warns that connected loads above 1.1 times rated inverter power after a grid outage cause overload shutdown. Size protected circuits to the continuous limit, not the 10-second peak.
Which meter and CT arrangement must be planned for this inverter?
GoodWe's standard ETA inverter list includes a built-in meter, CT ×1 and a 10 m CT lead. GoodWe specifies an external GM330 when more than two inverters are paralleled or the supplied CT does not suit the site current or cable diameter. Confirm this order's actual CT and meter scope before installation.
System components
Recommended components
GoodWe GW6.0 / GW9.0-BAT-D-G20 battery modules
Item number: DLK-GOODWE-GW60BATDG20
GoodWe allows different BAT-D-G20/G21 module models in one system, specifies up to six modules per column and gives a 5–108 kWh system range. The documented combination of 5.1/8.3 G20 or G21 with 6.0/9.0 G20 disables battery heating; mixed systems with separate expansion require BMS and DCDC software V06 or above. The battery modules are separate from GoodWe's standard ETA inverter kit.
Optional components
GoodWe GM330 meter for larger or parallel systems
Item number: DLK-GOODWE-GM330
GoodWe's ETA inverter manual lists a built-in meter and CT ×1 in its standard set. GoodWe specifies GM330 when more than two inverters are paralleled or the standard CT diameter or range does not suit the site current.
GoodWe GMK330 external smart meter
Item number: DLK-GOODWE-GMK330
The ESA manual lists GMK330 as an external meter option and shows GMK330 ×0 in the ETA inverter delivery set. Select it only for a site configuration that calls for an external meter.
Compatibility records
GoodWe GW6.0-BAT-D-G20 (ESA battery module, 6.0 kWh)Item number DLK-GOODWE-GW60BATDG20
GoodWe GW9.0-BAT-D-G20 (ESA battery module, 9.0 kWh)Item number DLK-GOODWE-GW90BATDG20The GoodWe ESA datasheet lists GW6.0-BAT-D-G20 and GW9.0-BAT-D-G20 modules and prints scalability of 12 pcs (PDF p3). The user manual limits one column to six batteries and names a battery expansion kit for higher capacity or a lower column (PDF p79).