• Green house icon with lightning bolt representing energy production capacity.

    22 GWh+

    Annual Energy Storage Production Capacity

  • Green power unit icon featuring a lightning bolt symbol.

    12 GWh+

    Battery Storage Systems Installed Worldwide

  • Green globe icon with interconnected network nodes and arrows.

    150 +

    Countries Served with Solar & ESS Solutions

  • Green map pin icon over a unfolded map layout.

    80,000 m²+

    Smart Energy Storage Manufacturing Base

B2B Battery Energy Storage Systems

Energy Storage Solutions by Application & Product

Explore SUNPAL ESS battery energy storage systems for peak shaving, power boosting, peak-valley arbitrage, backup power, grid stability, PV self-consumption, demand charge management and microgrid projects.

  • Sunpal commercial battery energy storage system performing peak shaving at an outdoor electric vehicle charging station.

    Peak Shaving


    Peak load reduction

    Lower electricity costs

    Grid pressure relief

    More
  • Array of Sunpal commercial battery energy storage cabinets, featuring the signature green and dark grey branding, providing reliable backup power at a mountainous solar and wind power plant.

    Back-up Power


    Critical load protection

    Grid outage support

    Diesel generator reduction

    More
  • Sunpal commercial battery energy storage containers integrated with a coastal microgrid featuring solar panels and wind turbines.

    Microgrid


    PV-storage-diesel hybrid

    Off-grid operation

    Black start capability

    More
  • Sunpal residential battery energy storage unit installed outside a modern home with roof solar panels, designed for PV self-consumption.

    PV Self-Consumption Optimization


    Store excess solar power

    Reduce PV curtailment

    Maximize local solar use

    More
  • Five Sunpal commercial battery energy storage cabinets installed outside an industrial facility with a solar carport and ground-mounted solar panels, designed for demand charge management.

    Demand Charge Management


    Peak demand control

    Monthly charge reduction

    Load profile optimization

    More
  • Peak-Valley Arbitrage


    Charge at low tariff

    Discharge at peak tariff

    Improve project ROI

    More
  • Rows of Sunpal commercial battery energy storage containers integrated with a desert solar farm for grid stability support.

    Grid Stability Support


    Frequency regulation

    Voltage stabilization

    Renewable output smoothing

    More
  • Sunpal commercial battery energy storage system installed at a busy seaport, providing dynamic power boosting for heavy terminal operations.

    Dynamic Power Boosting


    Instant power support

    Avoid transformer upgrades

    Weak-grid load buffering

    More
  • Learn More
  • 3D rendering of a white 20ft Sunpal containerized battery energy storage system featuring multi-door access and end cooling fans against a dark minimalist studio background.

    CubePal ECO-E20FT2170LP-2

    A 2170.3 kWh / 1125 kW 20ft liquid-cooled ESS container for C&I and utility-scale energy storage, integrating LFP batteries, PCS, EMS, hybrid cooling, and fire protection for solar-plus-storage, peak shaving, microgrid, and backup power projects.

    More
  • 3D product render of the white Sunpal ESS-E261LP commercial energy storage cabinet with control interface and cooling ventilation grilles set against a minimalist dark studio background.

    LiPal ESS-E261LP

    A 261 kWh liquid-cooled ESS cabinet built for C&I energy storage, combining LFP batteries, PCS, BMS, EMS, thermal management and fire protection for peak shaving, solar self-consumption and backup power applications.

    More
  • A white Sunpal commercial energy storage system cabinet with integrated controls and lower cooling vents, featuring a side-mounted inverter unit with a sunshade, set against a dark blue gradient studio background.

    LiPal Hybrid ECO-B261LP-2H

    Built for EPCs, distributors, and C&I energy storage buyers, the LiPal Hybrid ECO-B261LP-2H combines 261 kWh LFP battery capacity, 125 kW hybrid power conversion, liquid cooling, and PV-ready energy management in one compact outdoor ESS cabinet for solar-plus-storage, peak shaving, and backup power projects.

    More
  • 3D rendering of a white Sunpal ECO-B20FT5015LP-2N 20ft containerized energy storage system featuring multi-door access and integrated cooling fans, reflected on a smooth dark surface.

    CubePal ECO-B20FT5015LP-2N

    CubePal ECO-B20FT5015LP-2N is a 5.015 MWh all-in-one liquid-cooled battery energy storage container designed for utility-scale BESS, large C&I energy storage, renewable integration, and grid-support projects. Built with LFP battery packs, intelligent BMS, liquid cooling, and multi-level fire protection, this factory-integrated containerized ESS helps EPCs, distributors, and project developers reduce installation cost, shorten delivery time, and achieve reliable long-duration energy management.

    More
  • Sunpal outdoor commercial and industrial battery energy storage cabinet rendered in a desert landscape environment.

    AirPal ECO-E241WP-2A

    The ECO-E241WP-2A packs long-life LFP batteries, a high-performance PCS, intelligent BMS, active safety protection, smart power distribution, and HVAC into one cabinet — giving C&I projects a safer, higher-capacity storage option with flexible AC-side parallel expansion as energy demand grows.

    More
  • Sunpal ECO-B64WX outdoor energy storage cabinet featuring a side-mounted inverter and liquid cooling system, set against a desert landscape backdropped by a twilight sky.

    AirPal Hybrid ECO-B64WX

    The AirPal Hybrid ECO-B64WX packs a LiFePO₄ battery system, hybrid inverter, BMS, EMS, HVAC, and fire protection into one compact cabinet — giving smaller C&I sites a plug-and-play way to add PV integration, self-consumption, peak shaving, and backup power without a large-footprint installation.

    More
  • Sunpal outdoor commercial and industrial battery energy storage cabinet rendered in a studio setting, featuring a side access compartment with a hinged cover showing integrated control and inverter components.

    AirPal Hybrid ECO-B241WP-2H

    An integrated PV-plus-ESS solution combining LFP battery, hybrid inverter, HVAC, FSS, and intelligent monitoring in one compact cabinet. Built for commercial and industrial applications, it delivers flexible energy management, high PV utilization, and reliable backup power without needing multiple separate systems.

    More
  • Sunpal ECO-B100/120WP-2H outdoor commercial energy storage cabinet with side-mounted inverter enclosure, depicted on a platform surrounded by water and mountain peaks at twilight.

    AirPal Hybrid ECO-B100/120WP-2H

    The AirPal Hybrid ECO-B100/120WP-2H combines LFP battery storage, a hybrid inverter, HVAC, fire suppression, and intelligent energy management in one cabinet — simplifying installation while giving facilities two capacity options (100.48kWh or 120.576kWh) to match self-consumption, peak shaving, and backup power needs without over- or under-sizing.

    More
  • Learn More

[ 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.

  • Sunpal Energy Storage System (ESS) Power Conversion System (PCS) inverter module featuring a rack-mounted dark grey chassis.

    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%

    Converts battery DC power to grid/load AC power

    Supports grid-connected and off-grid operation

    Coordinates charging and discharging with EMS

    Read More
  • Internal view of a Sunpal Energy Storage System (ESS) Point of Connection (POC) cabinet showing busbars, wiring, and electrical components.

    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

    Collects PCS output and connects ESS to the grid

    Provides auxiliary power supply and distribution

    Supports EMS monitoring and communication

    Read More
  • Sunpal Energy Storage System (ESS) Static Transfer Switch (STS) cabinet featuring a white and green enclosure with ventilation and safety warning labels.

    STS Cabinet for Seamless Power Transfer

    Switching Mode: Millisecond-level transfer

    Application: Microgrid / hybrid ESS

    Source Control: Grid / ESS / generator

    Integration: Grid connection cabinet

    Switches power sources without load interruption

    Keeps critical loads powered during grid faults

    Supports VSG-based microgrid operation

    Read More
  • Sunpal Energy Storage System (ESS) ATS50 automatic transfer switch featuring a white enclosure with a green brand stripe.

    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

    Detects grid power loss and recovery automatically

    Transfers loads to backup power source

    Prevents unsafe reverse power flow

    Read More
  • Sunpal Energy Storage System (ESS) lithium battery pack module enclosed in a dark grey industrial chassis with safety terminals.

    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

    Stores energy as the basic battery system unit

    Supports flexible capacity expansion by modules

    Enables BMS monitoring of voltage and temperature

    Read More
  • Sunpal Energy Storage System (ESS) high-voltage box featuring a dark grey rack-mounted enclosure with front panel safety switches and green communication terminals.

    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

    Manages battery cluster electrical connection

    Collects voltage and current data for BMS

    Controls contactors and protection circuits

    Read More

[ 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.

  • Green diamond icon symbolizing premium quality and product value.

    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.

  • Green customer service representative icon with a headset.

    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.

  • Green shield icon with a checkmark signifying compliance and security.

    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.

  • Green cargo ship icon on waves representing reliable sea freight.

    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.

Open modular battery storage cabinet showing internal battery racks, control unit, and cooling lines. Two engineers in Sunpal hardhats reviewing technical system schematics on site. A gold trophy standing beside official product compliance certificates and test reports on a tiered platform. Large container vessel fully loaded with colorful freight containers navigating open sea.
  • Green diamond icon symbolizing premium quality and product value.

    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.

    Open modular battery storage cabinet showing internal battery racks, control unit, and cooling lines.
  • Green customer service representative icon with a headset.

    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.

    Two engineers in Sunpal hardhats reviewing technical system schematics on site.
  • Green shield icon with a checkmark signifying compliance and security.

    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.

    A gold trophy standing beside official product compliance certificates and test reports on a tiered platform.
  • Green cargo ship icon on waves representing reliable sea freight.

    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.

    Large container vessel fully loaded with colorful freight containers navigating open sea.

[ 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.

  • Two construction engineers in hard hats and safety vests review plans on a clipboard at an outdoor construction site.
    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

  • Team members collaborating with laptops and notebooks during a solution design and financial analysis meeting.
    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

  • Technician using a handheld testing device to inspect and verify hardware equipment system wiring.
    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

  • Aerial view of a loaded cargo ship overlaid with a digital global map network.
    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

  • Engineers commissioning a large-scale containerized energy storage system at a power station.
    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

  • Multiple computer monitors displaying real-time system data, code, and global tracking maps in a dark control center.
    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.

1000 +

Energy Storage Projects Delivered

12 GWh+

Battery Storage Systems Installed

150 +

Countries & Regions Served

24/7

Remote Monitoring & Lifecycle Support

  • 1.5 MW PV + 4.2 MWh BESS for Chad's First Hybrid Solar Power Station

    Scale:

    1.5 MW Solar PV + 500 kW PCS + 4.2 MWh LiFePO4 BESS

    Application Scenario:

    Rural electrification

    Benefits:

    Provides stable clean power for remote rural areas

    Stores daytime solar generation for controlled power dispatch and nighttime use

    Reduces reliance on diesel-based electricity generation

    Supports flexible grid-tied and off-grid hybrid power operation

    Enables reliable renewable energy access in areas with limited grid coverage

    Read More
  • 100kW / 160kWh Outdoor Energy Storage Cabinet for Reliable Power in Micronesia

    Scale:

    100kW Rated Power + 160kWh Battery Energy Storage System

    Application Scenario:

    Remote island microgrid

    Benefits:

    Supports reliable power supply for households, schools, and community facilities

    Enables renewable energy self-consumption and reduces diesel dependence

    Supports stable islanded operation and flexible energy dispatching

    Read More
  • 500kW / 900kWh Energy Storage System for WIN WIN Industrial Park in Malawi

    Scale:

    500kW PCS + 900kWh LFP BESS

    Application Scenario:

    C&I energy storage

    Benefits:

    Reduces diesel generator runtime by over 70%

    Supports peak demand management and reduces peak-related operating costs

    Maximises on-site solar self-consumption and reduces solar curtailment

    Provides backup power to maintain uninterrupted factory production and industrial operations.

    Stabilises feeder voltage for more reliable commercial power supply

    Avoids approximately 180 tonnes of CO₂ emissions annually

    Read More
  • 80kW + 160kWh Hybrid Solar + Energy Storage System for Commercial Energy Resilience - Argentina

    Scale:

    80kW Hybrid Solar + 160kWh BESS

    Application Scenario:

    C&I energy storage

    Benefits:

    Reduces peak demand from 120kW to 60kW

    Achieves approximately 90% energy self-coverage

    Enables up to 55% energy cost savings

    Supports reliable backup power during grid outages

    Optimizes PV, battery, grid, and load dispatch through intelligent EMS

    Read More
  • 200kW / 500kWh Solar + Energy Storage System for a Water Plant - Nigeria

    Scale:

    200kW Solar + 500kWh Battery Energy Storage System

    Application Scenario:

    Commercial water treatment

    Benefits:

    Provides reliable power for continuous water treatment operations

    Supports critical pumps during unstable grid supply and outages

    Reduces reliance on diesel generators and associated operating costs

    Enables rapid installation and commissioning through a containerized system design

    Read More
  • 500 kW / 1,075 kWh Battery Energy Storage for Reliable Hybrid Power at an Events & Conference Centre - Eswatini

    Scale:

    500 kW BESS + 1075 kWh Battery Capacity

    Application Scenario:

    C&I energy storage

    Benefits:

    Provides backup power during grid outages and load shedding

    Supports renewable energy utilization through solar PV and battery storage

    Helps manage peak electricity demand and reduce power costs

    Maintains reliable power for events and conference centre operations

    Operates at below 68 dB(A) for low-noise operation

    Read More
  • 500kW / 1MWh Energy Storage for Industrial Solar Self-Consumption and Peak Tariff Management in Spain

    Scale:

    400kW PV Array + 500kW PCS + 1MWh BESS

    Application Scenario:

    Industrial solar self-consumption

    Benefits:

    Stores surplus solar generation for peak-period consumption

    Reduces grid electricity costs through energy arbitrage

    Reduces PV curtailment losses

    Provides backup power for critical production and cold-storage loads

    Coordinates PV, battery, grid, and factory loads through intelligent EMS

    Read More
  • 200 kWh Energy Storage Microgrid for 24/7 Clean Power on Cagbalete Island - Philippines

    Scale:

    100kW Hybrid Inverter + 200kWh BESS

    Application Scenario:

    Remote island microgrid

    Benefits:

    Provides stable 24/7 electricity for local households, businesses, and community facilities

    Reduces diesel generator usage by more than 65%

    Supports backup power, peak shaving, and renewable energy self-consumption

    Achieves 92%+ round-trip efficiency and supports future system expansion

    Read More
  • 100 kW Rooftop Solar PV + 50 kWh Battery Storage for Commercial Energy Use in Suriname

    Scale:

    100 kW Solar PV + 50 kWh BESS

    Application Scenario:

    Customer self-use

    Benefits:

    Reduces reliance on grid electricity and diesel-based generation

    Increases on-site utilization of renewable solar energy

    Stores surplus solar power for more flexible energy use

    Supports reliable operation of the commercial facility

    Coordinates PV generation, battery storage, and grid power through an EMS

    Read More

[ 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.

  • UN38.3 test report document for 125kW/261kWh energy storage systems issued by CVC Testing Technology.

    UN38.3

    Transport Safety

  • UL 9540A test report document issued by TÜV SÜD evaluating thermal runaway fire propagation in energy storage systems.

    UL9540A

    Fire & thermal runaway safety

  • TUV SUD certification document for Sunpal rechargeable Li-ion battery system tested according to IEC 63056.

    IEC 63056

    ESS battery safety

  • TUV SUD certification document for Sunpal rechargeable Li-ion battery system tested according to IEC 62619.

    IEC 62619

    Industrial battery safety

  • IEC 61000

    Electromagnetic Compatibility

Download Certification Documents

[ 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.

Talk to an Engineer

Our engineers help you size the right battery capacity and PCS configuration, with a technical proposal in 24 hours.

MOBILE & WHATSAPP

+86 18269912022

EMAIL

ess@sunpalpower.com

HEADQUARTER

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.

Two Sunpal solar engineers in safety gear discussing energy storage system FAQs with a clipboard in front of solar panels.

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.

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.

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.

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.

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.

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.

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.

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.

Free to contact us