The EcoFlow OCEAN 2 Three-Phase Hybrid Inverter is an all-in-one, stackable hybrid inverter for three-phase homes, available in 8 kW, 10 kW and 12 kW outputs. It combines solar generation, battery storage and whole-home backup in a single system, with 3 MPPTs that accept up to 24 kW of PV and a battery bus that scales to 12 OCEAN 2 LFP battery modules, or up to 96 kWh with 8kWh modules.
Integrated whole-home backup with 0 ms load-side switchover and a built-in smart meter mean no separate backup box and no external meter wiring, which cuts installation time. The inverter stacks directly on the batteries, is rated IP66 for indoor or outdoor mounting, and is managed through the EcoFlow app, web portal or PowerInsight, with HEMS Intelligent mode optimising charging around dynamic electricity tariffs. EcoFlow backs it with a 15-year warranty.
8 / 10 / 12 kW
Rated output options
3 MPPTs
Up to 24 kW PV input
0 ms
Load-side switchover*
Up to 96 kWh
12 modules, 8kWh batteries
* The 0 ms transfer time applies in compliance with local grid regulations, with the grid in an open-circuit state, total load power not exceeding the rated backup output power, and stable grid conditions.
Safety and installation
This system operates at up to 1000 V DC on the PV side and 720-960 V DC on the battery bus. Installation, wiring and commissioning must be carried out by a qualified electrician following BS 7671 and the EcoFlow installation guide, and the connection must meet G98 or G99 as applicable to the system size. The inverter supports Emergency Power Off (EPO), and EcoFlow offers an Emergency Stop Button accessory.
Batteries and battery base sold separately
The inverter ships without batteries. It is designed to stack on EcoFlow OCEAN 2 LFP batteries (5kWh or 8kWh), up to 12 modules per inverter, on an OCEAN 2 battery floor base. A floor-standing stack holds up to 6 batteries, and a wall-mounted installation supports a maximum of 3 battery packs. OCEAN 2 batteries can be mixed with PowerOcean LFP batteries, but mixed stacks have their own base and stack-height requirements, so check the installation guide.
Backup operation
Whole-home backup is rated for up to 63 A. For 0 ms switchover, total backup load must not exceed the rated backup output power (8, 10 or 12 kW depending on model). Off-grid, up to 2 inverters can be cascaded, and on-grid up to 5.
Warranty
EcoFlow lists a 15-year warranty for the OCEAN 2 three-phase hybrid inverter. Refer to EcoFlow's warranty policy for full terms and conditions.
Choose your output
Rated output
Model
Max. PV input
Max. apparent power
Max. output current
8 kW
EF HD-P3-8K0-S2
16 kW
8,800 VA
14.3 A
10 kW
EF HD-P3-10K0-S2
20 kW
11,000 VA
17.8 A
12 kW
EF HD-P3-12K0-S2
24 kW
13,200 VA
21.4 A
All three models share the same 680 x 203 x 406.5 mm enclosure, 36.5 kg weight, 3 MPPTs, IP66 rating and 0 ms backup switchover. Pick the output to match your household demand and the size of your PV array.
Key features
All-in-one, stackable
The inverter stacks directly on the OCEAN 2 batteries with a pre-integrated design, so there are fewer components, no external backup box and a built-in smart meter.
Integrated whole-home backup
63 A whole-home backup with 0 ms switchover, plus third-party inverter connection on the backup side and generator integration via ATS.
3 MPPTs for any roof
Three MPPTs with one string each, 8 kW and 16 A per MPPT and a 50-1000 V range handle complex roofs and mixed orientations.
Scalable storage
Add up to 12 battery modules, mixing 5kWh and 8kWh OCEAN 2 packs, and cascade up to 5 inverters on-grid for larger sites.
Smart energy management
HEMS Intelligent mode automates charging and discharging around dynamic tariffs, with control from the EcoFlow app, web portal or PowerInsight.
Safe and weatherproof
AFCI, GFCI, anti-islanding and Type II surge protection on DC and AC, plus IP66 protection and a -20 to 60 °C operating range.
Technical specification
PV input
Number of MPP trackers / strings per MPPT
3 / 1
Max. input power per MPPT
8,000 W
Max. total input power
16,000 W (8 kW) / 20,000 W (10 kW) / 24,000 W (12 kW)
Max. input voltage
1000 V
PV operating voltage range
50-1000 V
MPPT voltage range at rated power
500-850 V
MPPT start-up voltage
120 V
Max. input current per MPPT
16 A
Max. short-circuit current per MPPT
20 A
AC on-grid
Rated power
8,000 W (8 kW) / 10,000 W (10 kW) / 12,000 W (12 kW)
Max. apparent power
8,800 VA / 11,000 VA / 13,200 VA
Nominal voltage
L-L 380/400 Vac; L-N 220/230 Vac; 3L+N+PE
Nominal frequency
50/60 Hz
Nominal current at 230 V
11.6 A / 14.5 A / 17.4 A
Max. output current
14.3 A / 17.8 A / 21.4 A
Max. input current (grid)
63 A
Power factor
0.8 leading to 0.8 lagging
THDi at full load
3% or less
Supported grid types
TN-S, TN-C, TN-C-S, TT
AC off-grid (backup)
Nominal output power
8,000 W / 10,000 W / 12,000 W
Nominal output voltage
L-L 380/400 Vac; L-N 220/230 Vac; 3L+N+PE
Nominal output frequency
50/60 Hz
Grid-to-off-grid / off-grid-to-grid switching time
0 ms / 0 ms (under stated conditions)
Battery and parallel installation
Rated battery voltage
800 V
Battery voltage range
720-960 V
Battery capacity
Up to 12 battery modules per inverter
Battery communication
CAN
Max. on-grid parallel capacity
Up to 5 cascaded inverters
Max. off-grid parallel capacity
Up to 2 cascaded inverters
Self-consumption (light load)
50 W
General
Dimensions (W x D x H)
680 x 203 x 406.5 mm
Mounting
Floor stand / wall mounted
Environmental category
Outdoor / indoor
Operating temperature
-20 to 60 °C (derating above 40 °C)
Storage temperature
-30 to 60 °C
Relative humidity
0% to 100%
Operating altitude
3,000 m (derating above 2,000 m)
Communication
Bluetooth, WiFi, RS485, CAN
User interface
LED and app
Protection and compliance
Protection
GFCI, AFCI, PV insulation resistance detection, anti-islanding, PV reverse polarity, Emergency Power Off (EPO), DC and AC surge protection (Type II), AC overcurrent, short-circuit and overvoltage protection
Safety and EMC
IEC/EN 62109-1, IEC/EN 62109-2, EN IEC 61000-6-1/-2/-3/-4, EN IEC 61000-3-11, EN 61000-3-12, EN 55011, EN 62920, EN IEC 62311, EN 50665
Grid codes
G98, G99, G100, G98 NI, G99 NI, EN 50549-1, EN 50549-10, VDE-AR-N 4105, IEC 62116
Specifications are subject to change by the manufacturer without notice.
Frequently asked questions
Which output should I choose: 8, 10 or 12 kW?
Choose based on your household demand and PV array. All models offer the same 3 MPPTs, enclosure and backup performance, with rated outputs of 8, 10 or 12 kW and maximum PV inputs of 16, 20 or 24 kW. Your installer can size the system to your load and the DNO connection limits.
Do I need a separate backup box or meter?
No. The inverter has integrated whole-home backup (63 A, 0 ms switchover) and a built-in smart meter, so you do not need an additional backup box or external meter wiring.
Which batteries does it work with?
It is designed for EcoFlow OCEAN 2 LFP batteries in 5kWh and 8kWh sizes, up to 12 modules per inverter (up to 96 kWh with 8kWh modules). The batteries and the OCEAN 2 battery base are sold separately, and OCEAN 2 batteries can be combined with PowerOcean LFP batteries.
Can I add it to an existing solar system?
Yes. The backup side supports third-party inverter connection, so you can add storage and backup without replacing existing solar equipment, and generators can be integrated via ATS for long outages.
What does 0 ms switchover mean?
It is the load-side transfer interruption time when the grid fails. The 0 ms figure applies in compliance with local grid regulations, with an open-circuit grid, stable grid conditions and total load power within the rated backup output.
Can it be installed outdoors?
Yes. It is IP66 rated and suitable for indoor or outdoor floor-stand or wall-mounted installation, with an operating range of -20 to 60 °C (output derates above 40 °C, and above 2,000 m altitude).
