Description
On the GW12K-ETA-G20 the stack charges at 12.0 kW / 16.1 A and discharges 13.2 kW / 17.7 A, with 24 kW of PV on four trackers and 13.2 / 24 kVA off-grid.
GoodWe ESA GW12K-ETA-G20 (12 kW three-phase power module)
12 kW Continuous Three-Phase Power: 12 kW rated AC on 230/400 V, 3L/N/PE, with 17.4 A per phase at 400 V.
24 kW Maximum PV Input: Four 21 A MPPTs, one string each, on this 12 kW model.
13.2 kW Battery Discharge: 16.1 A charge / 17.7 A discharge into 700-950 V BAT-D-G20 storage.
63 A Internal Bypass: Whole-home passthrough on this 5-20 kW class, switching under 4 ms.
Battery discharge on this model is 13.2 kW at 17.7 A
Charge 12.0 kW at 16.1 A, discharge 13.2 kW at 17.7 A, 700-950 V, nominal 750 V, start-up 720 V. One battery input on LFP BAT-D-G20 modules.
24 kW of PV lands on four independent 21 A trackers
Four independent MPPTs, one string each, 21 A / 26 A Isc, MPPT 120-950 V, start-up 150 V, max 1000 V. 24 kW is the maximum PV input of this 12 kW model.
Off-grid holds 24 kVA for 10 s
Off-grid 13.2 kVA continuous, 24 kVA for 10 s. Rated backup 12 kVA. Max efficiency 98.1%, European 97.2%. Cooling is Smart Fan Cooling.
ESA Series
12 kW column with 24 kW PV oversizing.
This 12 kW ESA G20 power module is rated for 24 kW maximum PV input through four MPPTs. The power module seats on a BAT-D-G20 column through the documented stacked connector; its IP66 enclosure is 800 × 340 × 270 mm and 34 kg.
Technical data
High-throughput All-in-One energy management for a 24 kW roof on a 12 kW three-phase column.
- Rated 3-Phase Power
- 12 kW
- Maximum PV DC input
- 24 kW
- Internal Grid Bypass
- 63 A
- Off-Grid Continuous
- 13.2 kVA
About these specifications
24 kW solar capacity with 12 kW continuous three-phase output in a modular column.
Sized as the 12 kW three-phase power stage in the ESA G20 range, the GW12K-ETA-G20 delivers 12 kW AC across three phases and takes 24 kW of PV on four MPPTs. It stacks on BAT-D-G20 modules, charges at 12.0 kW, discharges at 13.2 kW, and holds 13.2 kVA off-grid (24 kVA for 10 s).
Backup switching <4 ms.
Inverter: AC Output & Backup
- Rated / max. power
- 12 kW rated and max (GW12K-ETA-G20). GoodWe ESA G20 series: 5–30 kW
- Rated current at 400 V
- 17.4 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
- 12 kVA
- Backup max. apparent power (off-grid)
- 13.2 kVA continuous (24 kVA for 10 s)
- Backup max. current (off-grid)
- 27.3 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
- 24 kW (200% oversizing vs. 12 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
- 12.0 kW / 13.2 kW (GW12K-ETA-G20)
- Max. continuous charge / discharge current
- 16.1 A / 17.7 A
- Module options
- GW5.1-BAT-D-G20/G21: 5.12 kWh rated / 5.0 kWh usable; GW8.3-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: GW5.1/GW8.3 G20/G21 at 100% DoD, 0.2P, 25 ± 2 °C; GW6.0/GW9.0 G20 at 100% DoD, 0.4P, 25 ± 2 °C; beginning of life; actual energy varies with use and conditions
- Scalability
- Different BAT-D-G20/G21 module models can be combined in one system, with up to six modules per column and a 5–108 kWh system range. The documented combination of GW5.1/GW8.3 G20 or G21 with GW6.0/GW9.0 G20 disables battery heating. Mixed 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-G21; 10,000 cycles on GW6.0-BAT-D-G20 and GW9.0-BAT-D-G20; under specified laboratory test conditions
- Module protection & fire safety
- IP66 modules, integrated aerosol fire extinguishing; Heating integrated on GW6.0/GW9.0 modules for charging down to -20 °C; GW5.1/GW8.3 G20 charges from -18 °C, G21 from +2 °C
- Module dimensions / weight
- 800 × 326 × 270 mm per module; 57.5–79 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 film. The 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 GW12K-ETA-G20 (12 kW three-phase power module) belongs in, and the limits behind our engineers' recommendation.
12 kW three-phase column on a 24 kW four-tracker roof
A three-phase house with a PV array of up to 24 kW; its backup needs the 13.2 kVA continuous off-grid rating of this 12 kW column.
The GW12K-ETA-G20 has 24 kW maximum PV input across four 21 A MPPTs and 13.2 kW maximum battery discharge. Off-grid it delivers 13.2 kVA continuous and 24 kVA for 10 s; the 63 A internal bypass is a separate on-grid path rating.
- PV max 24 kW, 4 MPPTs; battery charge/discharge 12.0/13.2 kW; 6 modules per column, 12 per system.
Documents
Product questions
Does mixing BAT-D capacities change heating or firmware requirements on this 12 kW ESA?
Mixing battery modules of different models is supported. The battery heating film is optional, and only models equipped with the heating film can enable the "Battery Heating" function. The battery heating function is unavailable when GW5.1-BAT-D-G20, GW8.3-BAT-D-G20, GW5.1-BAT-D-G21, GW8.3-BAT-D-G21, GW6.0-BAT-D-G20 and GW9.0-BAT-D-G20 are mixed. Do not use batteries without the heating film in low-temperature environments.
What backup load can the GW12K-ETA-G20 design support?
For the BACK-UP port, the rated power of a single inductive load is 1.1 kVA single-phase and 3.3 kVA three-phase. The total rated power of multiple inductive loads is 0.4*Pn/3 single-phase and 0.4*Pn three-phase. Capacitive load is 0.33*Pn/3 single-phase and 0.33*Pn three-phase. Half-wave load is 2 kW single-phase.
Compatibility records
GoodWe GW5.1-BAT-D-G20 (ESA battery module, 5.12 kWh)Item number DLK-GOODWE-GW51BATDG20GoodWe GW5.1-BAT-D-G21 (ESA battery module, 5.12 kWh)Item number DLK-GOODWE-GW51BATDG21GoodWe GW6.0-BAT-D-G20 (ESA battery module, 6.0 kWh)Item number DLK-GOODWE-GW60BATDG20
GoodWe GW8.3-BAT-D-G20 (ESA battery module, 8.32 kWh)Item number DLK-GOODWE-GW83BATDG20GoodWe GW8.3-BAT-D-G21 (ESA battery module, 8.32 kWh)Item number DLK-GOODWE-GW83BATDG21GoodWe GW9.0-BAT-D-G20 (ESA battery module, 9.0 kWh)Item number DLK-GOODWE-GW90BATDG20The GoodWe ESA datasheet lists GW5.1-BAT-D-G20, GW8.3-BAT-D-G20, GW5.1-BAT-D-G21, GW8.3-BAT-D-G21, GW6.0-BAT-D-G20 and GW9.0-BAT-D-G20 modules and prints scalability of 12 pcs (p. 3). The user manual limits one column to six batteries. For capacity expansion, including installations that require a lower stack per column, it refers to a battery expansion kit (printed p. 79; PDF p. 80).