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High-voltage BESS Commercial Solar System Battery Storage

Cytech's Solar System Battery Storage is a high‑performance energy storage solution designed for industrial and commercial solar installations. Featuring advanced lithium‑ion cells, modular scalability, and intelligent BMS integration, it delivers reliable backup power, peak shaving, and load shifting. With a compact, weather‑resistant enclosure, easy installation, and remote monitoring capabilities, it optimizes solar utilization, enhances energy independence, and reduces electricity costs.
  • CYESS30-240

  • CYTECH

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Product Description

High-voltage BESS Commercial Solar System Battery Storage Video




High-voltage BESS Commercial Solar System Battery Storage Introduction


Solar System Battery Storage is a system that can store electric energy and supply power, with smooth transition, peak shaving and valley filling, frequency and voltage regulation and other functions. It can smooth the output of solar and wind power generation, and reduce the impact of its randomness, gap and fluctuation on the power grid and users; Charging in the valley price period and discharging in the peak price period can reduce the user's electricity expense; In case of power failure in the large power grid, it can operate independently to ensure uninterrupted power supply to users.



High-voltage BESS Commercial Solar System Battery Storage Parameter


ESS

30KW

60KW

Scalable maximum power

90KW

180KW

Battery capacity

87.92 KWh

163.84 KWh

Rated grid voltage

230/400V  3P+N+PE

Rated grid frequency

50HZ

Size(W*D*H)

789*1180*2450mm

1577*1180*2450mm

Installation conditions

Outdoor

Outdoor

Protection level

IP55

IP55

Working humidity range

0%~95%(non-condensing)

Working temp range

-30℃~+50℃(>45℃,wil Derate)

Communication interface

CAN, RS485

Battery cell brand

LFP(EVE)

Discharge rate

1C

Single battery capacity

5.12KWh

Battery quantity

16

32


Lithium-ion Battery Storage Cabinet Drawing


60KW energy storage system cabinet

Battery Energy Storage System Components


Energy storage system



Battery Management System(BMS) for Solar System Battery Storage





battery management system


According to the system communication capability and system security, the battery management system adopts a three-layer architecture. The slave control collects the voltage and temperature of each unit. The master controller obtains the slave control data, voltage and current through communication.


Name

Parameter

System power

DC24V

Single cell voltage detection range

0V~5V

Single cell voltage detection accuracy

±5mV

Temperature detection range

40℃~85℃

Temperature detection accuracy

±1℃

Total voltage detection range

0V~1000V

Total voltage detection accuracy

1%FSR

Insulation detection

Support the maximum voltage of 1200V, and the detection error is less than 10%

Current detection range

-300A-300A

Current detection accuracy

1%FSR

SOC accuracy

6%

Equalizing current

100mA

Communication interface

CAN, RS485

Overload protection

Over-charge, over-discharge, over-temperature, short circuit and other protection, and the protection setting can be set



Solar System Battery Storage Converter(PCS)


Power converter system


In the Solar System Battery Storage, in addition to the bidirectional inverter function, the energy storage converter can also support the power grid, ensure the stable operation of the power grid system, provide the ability to withstand short-term impact, smooth power supply, energy storage, peak shaving and valley filling.



Model

30KW

60KW

DC side parameters

Max voltage

1000V

1000V

Rated voltage

800V

800V

Working voltage range

680~1000V

680~1000V

Max charge/discharge current

44A

88A

AC grid connection parameters

Max input apparent power

30KVA

60KVA

Max input active power

30KW

60KW

Rated input voltage

230/400VAC,3P+N+PE

230/400VAC,3P+N+PE

Max continuous input current

43A

86A

Rated input frequency

50Hz

50Hz

AC off-grid parameters

Rated output voltage

230/400VAC,3P+N+PE

230/400VAC,3P+N+PE

Rated output frequency

50Hz

50Hz

Max continuous output current

43A

86A

Max output active power

30KW

60KW

Max output apparent power

30KVA

60KVA

General parameters

Unbalanced load capacity

100%

100%

power factor

>0.98

>0.98

Working temperature range

-30~+60℃(>45℃,wil Derate)  

-30~+60℃(>45℃,wil Derate)  

Max efficiency

98.5%

98.5%

AC/DC start function

YES

YES

Dimensions (W* D* H)

436*550*130mm

436*550*130mm

Weight

25kg

28kg



MPPT Controller Module



MPPT controller


The power module of MPPT controller adopts the latest optimized hardware design and advanced control algorithm, which has intelligent control and high reliability.


Model

30A

60A

PV side parameter

Max input component power

42KW

84KW

Max input voltage

1000VDC

1000VDC

MPPT voltage range

200~850VDC

200~850VDC

Starting voltage

200VDC

200VDC

MPPT

1

1

PV way

1

1

Max input current

100ADC

200ADC

DC side parameter

Max DC voltage

1000VDC

1000VDC

Rated voltage

800VDC

800VDC

Voltage range

350~1000VDC

350~1000VDC

Max continuous current

50ADC

100VDC

Max continuous power

30KW

60KW

Dimensions (W* D* H)

436*550*130mm

436*550*130mm

Weight

25kg

30kg



Energy Management System Battery Storage


Energy management system


In the Solar System Battery Storage, the EMS communication topology is divided into two layers. The top layer is the general centralized monitoring system.


Bottom equipment: energy storage converter, battery management system (BMS), environmental monitoring equipment, fire protection system, air conditioning or access control system, etc. are all connected to the monitoring system (currently with administrator authority management, soft access control).


The monitoring host completes the network connection, conversion, data acquisition, data local processing, protocol conversion and command exchange between the on-site monitoring and control systems, local user screen monitoring operation, control strategy, and WEB server functions, and realizes the high-speed collection and transmission of large-capacity real-time data, so as to ensure that the master station system can quickly and accurately obtain all monitoring and monitoring information, and timely feed back the system abnormalities and faults detected by the network, Ensure fast positioning and recovery. (It needs to be realized through station-level BMS)



Example of Selecting Scalable Solutions for Solar System Battery Storage


PCS power

MPPT power

Battery capacity

BMS

EMS

Air conditioner

Fire extinguisher system

Cabinet QTY

30KW

30KW

81.92KWH

1

1

1

1

1

60KW

60KW

163.84KWH

1

1

2

1

1

120KW

60/120KW

163.84KWH

1

1

2

1

1

180KW

120/180KW

409.6KWH

1

1

4

2

2

240KW

180/240KW

635.36KWH

1

1

6

3

3


30kw Solar System Battery Storage List


Equipment Name

Specification parameter

Unit

Qty

Remark

PCS

30kw

pcs

1


MPPT

30kw

pcs

1


Lithium battery

81.92kwh(5.12kwh/pcs)

pcs

16

option

Air conditioner


pcs

1


Fire Extinguisher


pcs

1


EMS


pcs

1


Solar panel

440W/pcs

pcs

64

option

Cabinet


Pcs

1


Power distribution and auxiliary materials


set

1



60kw Solar System Battery Storage List


Equipment Name

Specification parameter

Unit

Qty

Remark

PCS

60kw

pcs

1


MPPT

60kw

pcs

1


Lithium battery

163.84kwh(5.12kwh/pcs)

pcs

16

option

Air conditioner


pcs

2


Fire Extinguisher


pcs

1


EMS


pcs

1


Solar panel

440W/pcs

pcs

128

option

Cabinet


Pcs

1


Power distribution and auxiliary materials


set

1



Application

Applications of Solar System Battery Storage


As global renewables penetration soars, a robust solar battery energy storage system (BESS) has become indispensable for utilities, commercial enterprises, and critical‑infrastructure operators. By combining advanced lithium‑ion or LFP chemistries with intelligent Energy Management Systems (EMS), today’s solar battery storage system delivers grid‑grade performance, peak shaving, and uninterruptible power—all while maximizing return on investment.


1. Grid Balancing & Ancillary Services


1.1 Frequency Regulation

A utility‑scale solar and battery storage system provides sub‑second response to frequency deviations, meeting stringent grid code requirements (e.g., NERC PRC‑024). Fast‑acting inverters modulate real and reactive power, helping Independent System Operators (ISOs) stabilize 50/60 Hz frequency and earn ancillary‑service revenue.


1.2 Voltage Support & VAR Compensation

Integrated STATCOM‑capable inverters in a solar battery energy storage system dynamically supply or absorb VARs, maintaining voltage within ±5 % of nominal. This enhances feeder stability, reduces line losses, and defers costly substation upgrades.



2. Renewable Integration & Energy Arbitrage


2.1 Intermittency Mitigation

By storing surplus PV output during peak irradiance and dispatching on cloudy or nocturnal periods, a solar battery storage system smooths power curves and reduces curtailment. State‑of‑charge (SoC) algorithms optimize depth‑of‑discharge (DoD) to prolong cycle life beyond 10 000 cycles.


2.2 Peak Shaving & Load Leveling

Commercial and industrial (C&I) customers deploy solar and battery storage systems to cap demand at tariff thresholds. Automated EMS logic charges batteries during off‑peak hours (low tariff) or excess solar, then discharges at peak rates—achieving 20–40 % reduction in demand charges.


2.3 Energy Arbitrage & Demand Response

Leveraging time‑of‑use (ToU) and real‑time pricing, a solar battery energy storage system buys low and sells high—maximizing revenue streams. Integration with grid‑operator demand‑response programs yields additional incentives for curtailing load during system stress events.



3. Backup Power & UPS Functionality


3.1 Seamless Transition

Unlike diesel gensets, a solar battery storage system delivers true zero‑transfer‑time switchover. Critical loads—data centers, hospitals, telecom nodes—remain online through grid outages, thanks to fast‑acting static transfer switches and inverter redundancy.


3.2 Load Prioritization & Black‑Start

Advanced EMS can sequence loads by criticality, preserving SoC for life‑safety circuits. In microgrid configurations, the solar and battery storage system can even black‑start generation assets, restoring local power without grid support.



4. Industrial & Commercial Demand Management


4.1 Peak Demand Reduction

High‑draw manufacturing facilities leverage a solar battery energy storage system to shave spikes from heavy machinery start‑ups. This reduces capacity charges and smooths power factor, often achieving ROI within 3–5 years.


4.2 Tariff Optimization

An intelligent solar battery storage system monitors ToU and real‑time rates, dynamically charging/discharging to exploit tariff differentials. Combined with onsite PV, this hybrid system maximizes self‑consumption and minimizes grid procurement.



5. Emerging Applications

  • Microgrids & Off‑Grid Systems: In remote communities, a standalone solar and battery storage system paired with backup gensets achieves >90 % renewable penetration.

  • EV Charging Hubs: Fast‑charge stations integrate BESS to buffer grid impact and enable peak‑power sharing between chargers.

  • Virtual Power Plants (VPPs): Aggregated solar battery storage systems across rooftops participate in wholesale markets, providing scalable flexibility.



Conclusion

From grid ancillary services to C&I demand management, a professionally engineered solar battery energy storage system or solar battery storage system unlocks reliability, resilience, and revenue. By selecting the right chemistry, inverter topology, and EMS controls, stakeholders can future‑proof their energy assets and achieve optimal Levelized Cost of Storage (LCOS).


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