SUNPAL ESS Energy Storage System Manufacturer
From 50 kW / 100 kWh C&I battery energy storage systems to 100+ MWh containerized BESS solutions, SUNPAL ESS delivers modular LiFePO4 battery storage with intelligent BMS, PCS, EMS, air/liquid cooling and multi-layer safety for global solar, microgrid and grid-tied energy projects.
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22 GWh+
Annual Energy Storage Production Capacity
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12 GWh+
Battery Storage Systems Installed Worldwide
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150 +
Countries Served with Solar & ESS Solutions
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80,000 m²+
Smart Energy Storage Manufacturing Base
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[ B2B BATTERY ENERGY STORAGE SYSTEMS ]
Core Components of Energy Storage System
Key BESS modules for power conversion, grid connection, source switching, battery storage and high-voltage control.
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Energy Storage PCS for Battery Power Conversion
Rated Power: 500 kW / 1000 kW
Grid Voltage: AC 400V, 3-phase, 4-wire
Frequency: 50 / 60 Hz
THDi: ≤ 3%
Read MoreConverts battery DC power to grid/load AC power
Supports grid-connected and off-grid operation
Coordinates charging and discharging with EMS
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POC Cabinet for ESS Grid Connection
Grid Interface: AC 400V / 50(60)Hz
Connection Type: 3-phase, 4-wire
Architecture: AC collection + auxiliary distribution
System Interface: Grid connection via AC breaker
Read MoreCollects PCS output and connects ESS to the grid
Provides auxiliary power supply and distribution
Supports EMS monitoring and communication
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STS Cabinet for Seamless Power Transfer
Switching Mode: Millisecond-level transfer
Application: Microgrid / hybrid ESS
Source Control: Grid / ESS / generator
Integration: Grid connection cabinet
Read MoreSwitches power sources without load interruption
Keeps critical loads powered during grid faults
Supports VSG-based microgrid operation
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ATS Cabinet for Automatic Backup Power Switching
Transfer Mode: Automatic source switching
Power Sources: Grid / generator / ESS
Application: Backup and emergency power
Protection: Electrical interlock design
Read MoreDetects grid power loss and recovery automatically
Transfers loads to backup power source
Prevents unsafe reverse power flow
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LFP Battery Pack for Modular Energy Storage
Cell Type: LFP 3.2V 314Ah
Configuration: 1P48S / 1P52S / 1P104S
BMS: Slave control module integrated
System Role: Battery cluster building block
Read MoreStores energy as the basic battery system unit
Supports flexible capacity expansion by modules
Enables BMS monitoring of voltage and temperature
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High-Voltage Box for Battery Cluster Control
Voltage Range: DC 728V–936V
Auxiliary Power: AC 220V input / DC 24V output
Operating Temperature: -25°C to 55°C
Protection Level: IP20
Read MoreManages battery cluster electrical connection
Collects voltage and current data for BMS
Controls contactors and protection circuits
[ B2B BATTERY ENERGY STORAGE SYSTEMS ]
Why Choose SUNPAL ESS
Reduce project risk with reliable BESS manufacturing, intelligent battery management, certified safety design and global delivery support.
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Product Advantages
Intelligent & Safe BESS
Multi-layer BMS architecture with BMU, BCU and BAU for accurate SOC/SOH monitoring and stable battery performance.
Liquid cooling, thermal safety design and multi-level fire protection help improve long-term system reliability.
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Service Advantages
Custom ESS Solutions
Engineering support for system configuration, application analysis and customized energy storage solution design.
OEM / ODM service for residential batteries, C&I ESS cabinets and containerized BESS projects worldwide.
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Certification Advantages
Global Compliance
Products support major international standards including IEC, ISO, CE, UN38.3, VDE, FCC, ETL, RoHS and REACH.
Certification support helps simplify project approval, import compliance and regional market entry.
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Logistics Advantages
Worldwide Delivery
Global delivery support for 150+ countries, including export documents, shipping coordination and project logistics.
Structured production and supply chain planning help keep large-scale energy storage projects on schedule.
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Product Advantages
Intelligent & Safe BESS
Multi-layer BMS architecture with BMU, BCU and BAU for accurate SOC/SOH monitoring and stable battery performance.
Liquid cooling, thermal safety design and multi-level fire protection help improve long-term system reliability.
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Service Advantages
Custom ESS Solutions
Engineering support for system configuration, application analysis and customized energy storage solution design.
OEM / ODM service for residential batteries, C&I ESS cabinets and containerized BESS projects worldwide.
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Certification Advantages
Global Compliance
Products support major international standards including IEC, ISO, CE, UN38.3, VDE, FCC, ETL, RoHS and REACH.
Certification support helps simplify project approval, import compliance and regional market entry.
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Logistics Advantages
Worldwide Delivery
Global delivery support for 150+ countries, including export documents, shipping coordination and project logistics.
Structured production and supply chain planning help keep large-scale energy storage projects on schedule.
[ B2B BATTERY ENERGY STORAGE SYSTEMS ]
From Energy Storage Design to Long-Term Operation
A structured project workflow helps global customers plan, build, deliver and operate reliable battery energy storage systems with lower execution risk.
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01 STEP 1
Project Consultation & Site Assessment
We review load demand, site conditions, grid requirements, electricity tariffs and application goals to define the right energy storage system scope.
✓ Remote assessment supported
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02 STEP 2
ESS Solution Design & ROI Analysis
Our engineers develop a tailored BESS configuration with battery capacity, PCS selection, operating strategy and project-level economic evaluation.
✓ Custom system proposal
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03 STEP 3
Manufacturing & System Verification
Core components are manufactured and checked under controlled processes, with functional and safety verification before shipment.
✓ Factory-tested before delivery
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04 STEP 4
Global Shipping & Documentation
We coordinate export documents, customs support, insured shipping and international delivery for residential, C&I and containerized ESS projects.
✓ Delivered to 150+ countries
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05 STEP 5
Installation Guidance & Commissioning
SUNPAL ESS provides remote technical guidance for system setup, wiring checks, functional testing and initial operation.
✓ Commissioning support available
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06 STEP 6
Remote Monitoring & Lifecycle Support
After operation begins, we support troubleshooting, software updates and long-term system maintenance to keep the BESS running reliably.
✓ Long-term technical support
Global Energy Storage Projects & Case Studies
Real-world BESS projects for factories, microgrids, solar storage and hybrid power systems across global markets.
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1000 +
Energy Storage Projects Delivered
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12 GWh+
Battery Storage Systems Installed
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150 +
Countries & Regions Served
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24/7
Remote Monitoring & Lifecycle Support
[ BESS CERTIFICATIONS & COMPLIANCE ]
Certified Energy Storage Systems for Global Markets
SUNPAL ESS battery energy storage products are tested for safety, transport, EMC and environmental compliance, supporting smoother approval and deployment across residential, C&I and utility projects.
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UN38.3
Transport Safety
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UL9540A
Fire & thermal runaway safety
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IEC 63056
ESS battery safety
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IEC 62619
Industrial battery safety
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IEC 61000
Electromagnetic Compatibility
[ KNOWLEDGE CENTER ]
Battery Energy Storage Insights & Guides
Engineering articles from SUNPAL ESS on BESS sizing, C&I energy storage, solar storage integration, safety design and global market trends.
[ GET IN TOUCH ]
Get a Custom Energy Storage Solution
Tell us your project needs and SUNPAL ESS engineers will recommend a suitable BESS configuration, product selection and technical proposal.
Our engineers help you size the right battery capacity and PCS configuration, with a technical proposal in 24 hours.
+86 18269912022
+86 18269912022
ess@sunpalpower.com
No. 398 Ganquan Road, Shushan District, Hefei City, Anhui Province, China
[ FAQ ]
Frequently Asked Questions About Battery Energy Storage
Key answers for buyers planning residential, C&I and utility-scale BESS projects with SUNPAL ESS.
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What energy storage systems does SUNPAL ESS provide?
SUNPAL ESS provides LiFePO4 battery storage systems for residential, commercial and industrial, microgrid and utility-scale projects, including ESS cabinets, hybrid cabinets, battery cabinets and containerized BESS solutions.
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Can the system work with solar PV and the utility grid?
Yes. SUNPAL ESS systems can support solar-plus-storage, grid-tied, off-grid and hybrid operation, helping users improve solar self-consumption, backup power and peak shaving performance.
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How do I choose the right BESS capacity for my project?
Our engineers review your load profile, peak demand, backup time, PV capacity, grid conditions and project goals, then recommend a suitable battery capacity, PCS rating and system configuration.
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Are SUNPAL ESS systems suitable for C&I energy storage projects?
Yes. Our C&I energy storage solutions are designed for factories, commercial buildings, industrial parks, EV charging stations and microgrids, supporting peak shaving, backup power and energy cost reduction.
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Can I monitor the battery energy storage system remotely?
Yes. The EMS platform supports remote monitoring, operating data, alarms, fault diagnostics and system management, helping users improve operation and maintenance efficiency.
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What safety protections are included in the BESS?
Safety features can include intelligent BMS monitoring, thermal management, electrical protection, fire suppression, temperature detection and system-level fault alarms, depending on the product model and project design.
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What certifications can SUNPAL ESS provide?
SUNPAL ESS products can support international compliance documents such as IEC, CE, UN38.3, VDE, FCC, ETL, RoHS and REACH, with certification details confirmed according to product model and target market.
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How can I get a custom energy storage proposal?
Send us your application scenario, required capacity, voltage, location and project goals. SUNPAL ESS engineers will provide a customized BESS configuration and technical proposal.