Our storage product

PowerCombo E5

Q: What is the best battery for solar energy storage?

For many utility-scale solar projects, a lithium-ion BESS with an EMS is a strong starting point. Final selection should be based on duration, cycling, safety, site, grid and financial requirements.

Q: Is battery energy storage better than other storage technologies?

Battery storage is not universally better. It is often preferred when projects need fast response, modular deployment and frequent cycling; other technologies may be better for different durations or use cases.

Q: How do I choose an energy storage system?

Define the application, power and energy duration, operating profile, interconnection, safety requirements and lifecycle economics, then compare system architecture and service support.

Q: How does peak shaving work?

Peak shaving uses stored energy during high demand to limit power drawn from the grid. Its effect on the bill depends on the load profile, demand charges, tariff and system configuration.

5 MWh battery energy storage container (AC Block)

Energy: 5,015 kWh
Rated AC power, 2 h: 2,580 kW
Rated AC power, 4 h: 1,500 kW
Protection: IP54

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PowerCombo E5 20 ft battery energy storage container, angled view

Illustration

3D view

Rotate the container, zoom in and open the doors to see the battery racks.

Representative thermal management system

Start with power and capacity.

Specify the demand you want to serve and the duration you need to serve it. Then evaluate charging opportunities, usable energy, electrical connection and the space required for installation and service.

Configure for operation and support.

Review thermal management, protection, monitoring and maintenance requirements alongside the intended duty cycle. Features and service obligations belong in the agreed project scope.

Connect storage to the rest of the site

Renewable generation, site loads, the grid connection and the control system must work within one operating plan. Confirm the interfaces and responsibilities before selecting the final configuration.

Technical specifications

Parameter	Value
Energy	5,015 kWh
Rated AC power, 2 h	2,580 kW
Maximum AC power, 2 h	2,838 kW
Rated AC power, 4 h	1,500 kW
Maximum AC power, 4 h	1,650 kW
Battery chemistry	LFP
Cell	3.2 V / 314 Ah
Cycle life at 70% retention (0.5C, 25 °C)	8,000
Battery strings	12
DC voltage range	1,164.8 … 1,476.8 V
Rated AC voltage	690 V
Grid voltage range, adjustable	586.5 … 759 V
Frequency	50/60 Hz
Power factor	-1 … +1
THDi	< 3%
Integrated PCS	AC Block
Cooling	Liquid cooling for battery packs and PCS
Fire suppression	PFAS-free aerosol extinguishing agent
Fire control panel	Listed
Fire sprinkler	Pre-installed
Protection	IP54
Operating temperature	-30 … 50 °C
Relative humidity, non-condensing	0 … 95%
Altitude without derating	2,000 m
Dimensions, 20 ft	6,058 x 2,438 x 2,896 mm
Maximum weight	44 t
Communication	Ethernet, Modbus TCP/IP
Grid-forming capability	Virtual synchronous generator control for grid support and islanded operation
Certifications	UL1973, UL9540A, UL9540, IEC 62619, CE, UN38.3
Compliance	IEC 62933, NFPA 855

Download datasheet (PDF)Request an offer

Also available

PowerCombo 3 MWh

3,086 kWh battery energy storage container

Energy: 3,086 kWh
Rated AC power: 1,600 kW
Rated AC voltage: 690 V
Protection: IP54

Download datasheet (PDF)Request an offer

View technical specifications

Parameter	Value
Energy	3,086 kWh
Rated AC power	1,600 kW
Maximum AC power	1,760 kW
Battery chemistry	LFP
Cell	3.2 V / 314 Ah
Cycle life at 70% retention (0.5C, 25 °C)	8,000
Battery strings	8
Integrated PCS	Yes
Rated AC voltage	690 V
Cooling	Liquid cooling
Dehumidification	Yes
Fire suppression	FK-5-1-12
Protection	IP54
Operating temperature	-30 … 50 °C
Altitude without derating	2,000 m
Dimensions, 20 ft	6,058 x 2,438 x 2,896 mm
Maximum weight	31 t
Communication	RS485, Ethernet
Certifications	UL1973, UL9540A, UL9540, IEC 62619, CE, UN38.3

Transformer Station

MV step-up transformer container up to 35 kV for PowerCombo BESS

Ratings at 40 °C: 3,300 kVA / 6,600 kVA
Input, 3-phase: 690 V
Output voltage: 10 … 35 kV
MV and LV room protection: IP54

Download datasheet (PDF)Request an offer

View technical specifications

Parameter	Value
Ratings at 40 °C	3,300 kVA / 6,600 kVA
Input, 3-phase	690 V
Output voltage	10 … 35 kV
Frequency	50/60 Hz
Transformer	Oil-immersed
Cooling	ONAN
Insulating fluid	Mineral oil, PCB free
Efficiency	Tier 2 (EN 50588-1)
MV circuit breaker	Vacuum
MV protection	Relay protection
LV surge protection	I+II
UPS	1 kVA / 30 min
MV and LV room protection	IP54
Corrosion class	C5-M
Operating temperature	-30 … 40 °C
Dimensions, 20 ft	6,058 x 2,438 x 2,896 mm
MV and LV connections	Prewired and pretested
Communication	Modbus TCP/IP
Standards	IEC 62271-202, IEC 62271-200, IEC 60076, IEC 61439-1, EN 50588-1

Values are nominal and may vary by project configuration. Final values are confirmed in the project offer.

Frequently Asked Questions

For many utility-scale solar projects, a lithium-ion BESS with an EMS is a strong starting point. Final selection should be based on duration, cycling, safety, site, grid and financial requirements.

Battery storage is not universally better. It is often preferred when projects need fast response, modular deployment and frequent cycling; other technologies may be better for different durations or use cases.

Define the application, power and energy duration, operating profile, interconnection, safety requirements and lifecycle economics, then compare system architecture and service support.

Peak shaving uses stored energy during high demand to limit power drawn from the grid. Its effect on the bill depends on the load profile, demand charges, tariff and system configuration.

PowerCombo E5

3D view

Start with power and capacity.

Configure for operation and support.

Connect storage to the rest of the site

Technical specifications

PowerCombo 3 MWh

Transformer Station

Frequently Asked Questions

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