30kW Battery Storage System | PV-ESS-Diesel Microgrid

Name: PV 30kW Battery Storage - ETEK Electri
SKU: BESS-M 30-72-75

The BESS-M 30-72-75 is a 30kW battery storage system built for PV-ESS-Diesel microgrids. It combines 72kWh of storage, a 30kW PCS, built-in STS and dual PV input in one IP54 cabinet, cutting diesel runtime for off-grid and self-consumption sites.

Request a Quote

Pricing is quoted per order — tell us your quantity and destination and our sales team will respond with a full offer.

ModelBESS-M 30-72-75

CategoryUncategorized

AvailabilityIn stock

CE & TUV certified
Worldwide shipping
OEM & ODM support

Product Features of 30kW Battery Storage

This 30kW battery storage cabinet integrates the battery, PCS, PV input, and transfer switch in a single outdoor-ready enclosure:

Status Indication: shows system status, including load, storage capacity, and power.
Multi-Mode Operation: multi-level priority control for reliable power from the grid, PV, and loads.
Battery Management: integrated BMS for battery monitoring and protection.
Remote Monitoring: multi-end remote access via self-service platform and device-side protocols.
Easy Installation: IP54 cabinet with flexible installation options.
Fast switching: built-in STS with switching time of 10 ms or less.
Wide operating range: -30 to 60°C charge and discharge, with dry self-cooling.

Commercial Applications of 30kW Battery Storage

In off-grid areas without city power, a 30kW battery storage unit acts as the real-time frequency and voltage regulator of the microgrid. The EMS prioritizes solar power, storing surplus energy by day and releasing it at night, so the diesel generator starts less often and runs in an efficient, stable range. The result is lower fuel use, lower transport and maintenance costs, and longer generator life.

Paired with PV and a diesel generator, this BESS microgrid delivers grid-like power quality and keeps critical loads running through sudden load changes and extreme weather. It is a practical building block for commercial solar battery storage at remote sites, and several units can be paralleled (up to 5 PCS) as demand grows.

PV-ESS-Diesel microgrid: solar array, diesel generator, and ETEK battery cabinets

Applications & Use Cases

Off-grid power supply: autonomous, reliable energy for areas without city power.
Diesel fuel reduction: solar-first dispatch with “daytime storage and nighttime release.”
Self-consumption: store PV output on site and use it when it is needed.
Critical load backup: uninterrupted operation during extreme weather and sudden load changes.
Power smoothing: suppresses frequency and voltage oscillations caused by equipment start/stop and renewable fluctuation.
Portable and remote power: high-power portable power stations are used for remote-area development and livelihoods.

Technical Specifications of 30kW Battery Storage

The tables below list the verified parameters of the 30kW battery storage model BESS-M 30-72-75, taken from the manufacturer datasheet.

Battery Module
Voltage	57.6V
Capacity	314Ah
Energy	18kWh
Cooling method	Dry self-cooling
Battery Cluster
Rated voltage	230V
Grouping method	1P72S
Rated capacity	314Ah
Output voltage range	352.8V~447.3V
Rated energy	72kWh
Max continuous charging current	157A
Max continuous discharge current	157A
Work Environment
Charging temperature	-30~60°C
Discharge temperature	-30~60°C
Operating humidity	RH≤80%
Storage Environment
Short-term storage (<1 month)	-20~55°C
Storage humidity	RH≤80%

PCS Parameters
Rated current	140A
Maximum output current	150A
Overload capacity	110% long-term
Output power	12kW / 18kW / 30kW
AC port voltage	12kW: 2P/N/PE, 120V/240V \| 18kW: 3P/N/PE, 3P/PE, 208V/220V/240V \| 30kW: 3P/N/PE, 3P/PE, 380V/400V/415V
Frequency	50/60Hz±5Hz
Power factor	0.8 lead ~ 0.8 lag
Battery side voltage	150V-800V
Parallel	Max 5 PCS
STS switching time	≤10ms
PV Parameters
Maximum power	38.4kW+38.4kW
Maximum PV voltage	850V
MPPT voltage range	200V-800V
Maximum DC input current	64+64A
PV startup voltage	250V
System Parameters
*Dimension (WDH)*	11001272.81610 mm
Weight	1100 kg
Degree of protection	IP54
Working temperature range	-30~60°C (>45°C derating)
Cooling	Dry self-cooling
Relative humidity	5~95% (no condensing)
Highest altitude	4000 m (>2000 m derating)

Dimensions and Wiring of 30kW Battery Storage

The 30kW battery storage cabinet measures 1100 mm (W) x 1272.8 mm (D) x 1610 mm (H) and weighs 1100 kg, with floor-standing installation and IP54 protection. Front, side and back views are shown below.

In the system topology, the diesel generator and the PV-ESS-Diesel microgrid unit share the AC bus feeding the load. The STS handles bus switching, the PV array and battery pack connect over the DC bus, the BMS reports to the EMS over the communication line, and the EMS links to cloud and dispatching platforms.