Why PowerOak ESS?

PowerOak ESS provide you with a durable solution that allows you to store your own energy and is CO2 neutral. You can become energy independent, and choose from multiple models. You can also take advantage of:

–              Full plug-and-play

–              Completely portable and mobile

–              Five year warranty

–              Suitable for increasing private consumption

–              Can be used on/off grid

The ESS can be used as a backup and with or without a PV plant.


Energy storage systems make it possible for you to use them in a variety of off grid applications. When there is no power supply available, you can count on ESS systems. They are available in 3.2, 4, 6.5, 8, and 12 kWh battery capacities.

The various sets are fully configured when equipped with a solar charger, AC charger, AC inverter, as well as an interface with color display and lithium-ion battery. The only thing you need to do is roll out the system and connect appliances to the system. You also have the ability to connect solar panels in order to provide you with even more energy.

System Backup / UPS

You have the ability to expand your PV system (photovoltaic) so you have the ability to provide your home with the necessary energy in the event you ever become disconnected from grid power. ESS will switch systems during power outages automatically to what is known as Island mode. This guarantees that you have a power supply no matter what. Existing and new installations can be upgraded to these types of sets.

Increase Consumption

You have the ability to increase energy consumption without increasing the overall operating costs. During the day, the battery recharges via solar energy. In the evening hours, energy is used within the ESS. If this ever becomes insufficient, you can always change the settings. You can determine whether your energy comes from the grid or through an ESS.

It’s always a good idea to know how you can increase consumption generated by solar energy so that you have the means to live off grid if this is something you want to do.

Return Power to Grid

It is of course also possible to return power back to the grid. When your PowerOak ESS is fully chaged it will return energy to the grid.

All-in-one ESS (Energy Storage System)
Model No.PS8030B

Battery Capacity8.0KWh

Battery TypeSamsung Li-ion Battery
Rated Output Power3000W
Peak Output4000W
Output Voltage100/110/120V OR 220/230/240V
Output Frequency50Hz/60Hz
Overload Ability120%<load<130% @10min;130%<load<150% @10s
UPS FunctionYES
On/off GridOn & Off Grid
Max Efficiency92%(>70% Load)
AC Charge
Input Voltage88~264Vac
Power Factor≥0.94(full load)
Input Frequency50/60Hz±5Hz
Max Charge Power2400W
Max Efficiency>92%
PV Charge
Max Input Power2400W
Start-up Voltage75Vdc
MPPT Amount2
MPPT Input Voltage75~140 Vdc
Max Input Voltage150 Vdc
MPPT Efficiency99.5%
Max Efficiency>96%
Solar Charing ModelMPPT
Working ConditionRelative humidity: 5%~90%
Temperature: 0~45℃
Product Dimension779×350×912mm
Packing Dimension880×525×1080mm
Net Weight157Kg

Gross Weight185Kg
Model Name                      MG3215KDistributed On-off Micro Grid System
Continuous Rated Power15KW
AC Parameters
Rated Alternating VoltageGrid Voltage400VAC
Inverter Voltage400VAC
Rated AC Frequency50Hz
Total Harmonic DistortionGrid Current<4%
Inverter Voltage2%
On/off Grid Switching Time< 20ms
Maximum Inverter Efficency93.80%
Referenced Certification StandardCE,VDE 0126-1-1, AS4777, CEC, AS
Output WavePure Sine Wave
DC Parameters
Recommended Each line PV Input Power4000W
PV Input4 lines
Each PV Line Panels Start-up Maximum Voltage145VDC(under definite lowest temperature condition)
MPPT Voltage Range70~120VDC
PV Maximum Output Current320A
Charger Maximum Efficiency97.30%
Battery VoltageRated Value52VDC
Working Range48~57VDC
System Parameters
Stored Capacity≥32KWh
External CommunicationsRS485(RS232/USB/Internet Optional)
Working Environment Temperature0oC~45oC
Working Environment Humidity10%~90%
IP GradeIP54
DimensionBattery Box1130mm×800mm×600mm
Inverter Box1130mm×800mm×600mm
WeightBattery Box240kg
Inverter Box210kg