Description
Maximum three-phase power delivery with heavy-duty grid bypass.
GoodWe ESA GW15K-ETA-G20 is a 15 kW three-phase All-in-One hybrid inverter unit delivering 30 kWp solar intake and 63 A grid bypass, engineered to power large luxury estates, home workshops, and high-draw commercial loads in a cable-free vertical tower.
15,000 W Continuous Three-Phase Power
Maximum continuous throughput in the ESA G20 range to drive multiple heat pumps, EV chargers, and workshop tools.
30,000 W Solar PV Input (200% Oversizing)
Massive DC intake captures abundant daytime solar energy to fast-charge high-density storage banks.
63 A High-Current Grid Bypass
Heavy-duty internal bypass contactor handles high domestic currents without tripping main fuses.
Cable-Free Column Stacking
Mounts directly atop BAT-D-G20 battery bricks with internal busbars, eliminating wall clutter and exposed conduits.
More product details
Built for large luxury estates and small commercial operations, the GW15K-ETA-G20 carries high domestic current demands without bottlenecking main service lines, while providing sub-10 ms automatic backup power.
- Delivers 15,000 VA continuous three-phase power across L1, L2, and L3 during utility blackouts.
- 63 A continuous bypass allows high-draw domestic equipment (EV chargers, heat pumps, ovens) to run without tripping main fuses.
- Sub-10 ms automatic transfer ensures zero computer reboots or smart home controller resets.
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Double DC oversizing with furniture-grade column stacking.
Sized to absorb generation from extensive multi-aspect residential roofs, the GW15K-ETA-G20 captures high solar yields while mounting directly atop high-density battery modules with internal busbars. Internal push-in busbars pass high-voltage power and communication directly down the stack without external cables. Eliminates exposed high-voltage DC wiring on garage and utility room walls, maximizing residential safety. IP66 cast-aluminum casing certified for clean indoor utility rooms or sheltered outdoor walls (-35 to +60 °C).
Runs 16.5 kW battery discharge power
High-voltage battery interface supports 15.0 kW charge at 20.1 A and 16.5 kW discharge at 22.1 A across 700 to 950 V.
Fits 30 kW solar arrays across 4 trackers
Four independent 21 A MPP trackers accommodate up to 30 kW of solar panels with 26 A short-circuit protection.
Holds 30.0 kVA surge capacity for commercial loads
Supplies 16.5 kVA continuous off-grid capacity and absorbs inductive equipment inrushes up to 30.0 kVA for 10 s.
Technical data
The apex All-in-One residential energy hub engineered for heavy electrification and commercial workshops.
30 kWp solar absorption with 15 kW continuous three-phase power in a cable-free tower.
Maxing out GoodWe's ESA G20 All-in-One lineup, the GW15K-ETA-G20 delivers 15,000 W continuous AC output across 3 balanced phases. It processes up to 30,000 Wp of solar input across multiple MPPT channels, stacking cleanly onto high-density 314 Ah BAT-D-G20 battery packs to provide whole-estate energy independence and commercial-grade emergency power.
- Continuous 3-Phase Power
- 15,000 VA
- 200% Solar DC Intake
- 30,000 Wp
- Heavy-Duty Grid Bypass
- 63 A
- External DC Cables
- Zero
Inverter: AC Output & Backup
- Rated / max. power
- 15 kW rated and max (GW15K-ETA-G20). Family: 8 / 10 / 12 / 15 kW in this catalogueseries spans 5-30 kW
- Rated current at 400 V
- 21.8 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, the internal 63 A bypass carries the whole-house load through the unit, so no external transfer switch is needed (5-20 kW classes)
- Backup nominal apparent power
- 15 kVA
- Backup max. apparent power (off-grid)
- 16.5 kVA continuous (30.0 kVA for 10 s)
- Backup max. current (off-grid)
- 33.4 A
- Max. unbalanced single-phase output
- 7.3 kW on one phase (GW15K-ETA-G20, per user manual)
- On/off-grid switching time
- <4 ms
- Power factor / THDi
- 0.8 leading - 0.8 lagging / THDi <3%
PV Input
- Max. PV input power
- 30 kW (200% oversizing vs. 15 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
- 15.0 kW / 16.5 kW (GW15K-ETA-G20)
- Max. continuous charge / discharge current
- 20.1 A / 22.1 A
- Module options
- GW5.1-BAT-D-G20/G21: 5.12 kWh rated / 5.01 kWh usableGW8.3-BAT-D-G20/G21: 8.32 / 8.01 kWh · GW6.0-BAT-D-G20: 6.0 / 5.82 kWh · GW9.0-BAT-D-G20: 9.0 / 8.72 kWh
- Scalability
- Up to 12 modules per system (max 6 per single stacked column), up to 108 kWhmixing of different capacities and old/new modules supported
- Module cycle life
- >=8,000 cycles (5.1 / 8.3 kWh modules)>=10,000 cycles (6.0 / 9.0 kWh modules), lab conditions, 100% DoD, 25±2 C
- Module protection & fire safety
- IP66 modules, integrated aerosol fire extinguishingheating integrated on 6.0/9.0 modules (optional on 5.1/8.3) for charging down to -20 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
- 97.3%
- Max. battery-to-AC efficiency
- 98.0%
System & Environment
- Ingress protection
- IP66 (system marketed for outdoor use in harsh environments)
- Low-temperature operation
- Reliable operation down to -20 C, battery heating module required for -20 C operation (integrated on 6.0/9.0 kWh modules)
- Noise
- As low as 30 dB at 25 C ambient (5-8 kW classessmart fan cooling with ultra-silent mode)
- 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 GW15K-ETA-G20 (15 kW three-phase all-in-one) belongs in, what to verify before quoting, and when another model is the better pick.
Large Estates & Multi-Family Homes (20–30 kWp PV) with Heavy Electrification
Luxury residential properties running multiple heat pump zones, EV charging stations, and domestic workshops seeking full off-grid independence.
15 kW continuous AC output easily powers high-draw three-phase equipment simultaneously, while 30 kWp solar intake ensures fast battery charging on short winter days.
- BoundaryIf total solar array size is under 20 kWp and peak continuous household demand stays under 10–12 kW, step down to save capital expenditure. ---
- If total solar array size is under 20 kWp and peak continuous household demand stays under 10–12 kW, step down to save capital expenditure. ---
Documents
GoodWe ESA Series 5-30kW Datasheet (EN)Product questions
What is the maximum continuous AC export current on this 15 kW model?
24.0 A per phase; 32 A or 40 A 3-pole industrial circuit breaker. The GW15K-ETA-G20 delivers a nominal continuous output current of 21.7 A per phase (max output current 24.0 A @ 400 V). A 3-pole 32 A or 40 A circuit breaker (MCB) is standard on the AC distribution board.
Can this model operate in full off-grid backup mode?
Yes. Delivers 15,000 VA continuous three-phase emergency backup. When the utility grid drops, the inverter's internal automatic switch isolates the home within 10 ms and establishes a stable 400 V microgrid, supplying full 15 kW continuous power to connected circuits.
System components
Required components
GoodWe GM3000 three-phase smart meter
Item number: DLK-GOODWE-GM3000
The ESA controls self-consumption and export limiting from a grid-point measurement; in GoodWe three-phase systems this is a GoodWe smart meter with clip-on CT. Confirm which meter/CT variant is already in the scope of delivery of your ESA order before adding one.
GoodWe GM330 three-phase CT meter (large-mains alternative)
Item number: DLK-GOODWE-GM330
CT-based alternative where the service is too large for direct metering or the meter must sit in an existing distribution board. It is also one of the two meters GoodWe names for generator integration (GMK330 or GM330 per the ESA user manual).
Recommended components
GoodWe GW6.0 / GW9.0-BAT-D-G20 battery modules
Item number: DLK-GOODWE-GW60BATDG20
Storage scales purely by stacking modules, up to 12 per system (max 6 per column) to 108 kWh, and GoodWe explicitly allows mixing capacities and old/new modules. The 6.0 and 9.0 kWh G20 modules are the >=10,000-cycle versions with integrated heating for winter charging.
GoodWe HCA G2 GW11K-HCA-20 EV charger
Item number: DLK-GOODWE-GW11KHCA20
The ESA user manual lists GoodWe AC charging piles as directly connectable. The 11 kW HCA G2 charges the car from PV surplus and shares the same SEMS+ app as the ESA, completing the home-energy package.
Optional components
GoodWe GMK330 smart meter (generator integration)
Item number: DLK-GOODWE-GMK330
Needed (GMK330 or GM330) when a backup generator should be controlled by the ESA and allowed to charge the battery, per the ESA user manual.
Approved pairings
GoodWe GW6.0-BAT-D-G20 (ESA battery module, 6.0 kWh)Item number DLK-GOODWE-GW60BATDG20GW6.0 / GW9.0-BAT-D-G20 modules; a single string stacks up to 6 (manual p69), 12 units system-wide. The number of parallel stacks is NOT printed - 12/6 would be an inference, so quote multi-stack designs conservatively.
GoodWe GW9.0-BAT-D-G20 (ESA battery module, 9.0 kWh)Item number DLK-GOODWE-GW90BATDG20GW6.0 / GW9.0-BAT-D-G20 modules; a single string stacks up to 6 (manual p69), 12 units system-wide. The number of parallel stacks is NOT printed - 12/6 would be an inference, so quote multi-stack designs conservatively.