AINEGY Grid-Tied ESS Cabinet · Liquid Cooling · Integrated BMS / PCS / EMS

AINEGY On-grid BESS Cabinet / Liquid Cooling

Name: AINEGY On-grid BESS Cabinet / Liquid Cooling
Brand: AINEGY
SKU: AINEGY-ONGRID-LC-BESS-CABINET

The AINEGY On-grid BESS Cabinet / Liquid Cooling is a grid-tied liquid-cooled BESS cabinet with integrated battery system, PCS, BMS and EMS. Available in 125kW/261kWh and 250kW/522kWh configurations for C&I peak shaving, time-of-use energy shifting, demand management and load smoothing.

This AINEGY product is not a battery-only DC cabinet. The integrated PCS connects the battery system to the AC side of the site, while the EMS manages charge and discharge strategy according to grid availability, load demand and electricity tariff logic. Under standard on-grid operation, the cabinet follows the utility grid and does not provide standalone output during a grid outage.

125kW / 261kWhCompact grid-tied storage for moderate C&I loads.

250kW / 522kWhHigher power and energy capacity for larger sites.

832V Battery PlatformLiFePO4 battery system nominal voltage.

400Vac / 230VacAC-side grid-tied cabinet connection.

Liquid CoolingBetter thermal uniformity than conventional air-cooled layouts.

Integrated BMS / PCS / EMSBattery monitoring, power conversion and operating strategy in one cabinet.

Send Project Requirements to AINEGY View Technical Specifications

About AINEGY On-grid BESS Cabinet / Liquid Cooling

AINEGY provides commercial and industrial lithium battery energy storage solutions for grid-tied, solar-plus-storage and site energy management projects. The AINEGY On-grid BESS Cabinet / Liquid Cooling is designed for C&I customers who need an integrated AC-side energy storage cabinet rather than a battery-only DC cabinet.

This product belongs to the AINEGY grid-tied ESS cabinet portfolio and combines LiFePO4 batteries, liquid cooling, BMS, PCS and EMS in one cabinet platform. It is mainly used for peak shaving, time-of-use energy shifting, demand management, load smoothing and scalable multi-cabinet grid-tied deployments.

How Grid-Tied Operation Works

The cabinet connects to the AC side of a commercial or industrial electrical system. When the utility grid is available, the PCS converts AC power into DC power to charge the battery, or converts stored DC energy back into AC power for grid-tied site load support. The BMS protects the battery system, and the EMS decides when to charge, discharge or limit operation according to the project strategy.

This product is designed for grid-tied operation. It follows utility grid voltage and frequency. During a utility outage, standard grid-tied output stops under anti-islanding protection logic unless a separate grid-forming system and islanding design are included at project level.

AC-Side ChargingWhen grid power is available or electricity price is lower, the integrated PCS converts AC power into DC power and charges the 832V LiFePO4 battery system.

Grid-Tied DischargeWhen the site reaches a peak-load period or electricity price is higher, the PCS converts stored battery energy back into AC power for grid-tied load support.

BMS ProtectionThe BMS monitors battery voltage, current, temperature, SOC and fault status to keep the battery system within safe operating limits.

EMS DispatchThe EMS determines charge and discharge timing based on peak shaving, time-of-use shifting, demand management and multi-cabinet coordination.

Liquid CoolingCoolant circulation removes heat from battery modules more evenly, reducing local hot spots and cell-to-cell temperature differences during repeated cycling.

Parallel ExpansionMultiple cabinets can be configured for larger grid-tied power or energy capacity when AC protection, communication and EMS coordination are designed together.

What It Solves for C&I Grid-Tied Sites

This cabinet is used for grid-connected energy management, not off-grid power supply. Its value comes from storing energy when grid conditions or tariffs are favorable, and discharging when site load or electricity cost is higher.

Peak Shaving

For factories and commercial buildings with peak-demand pressure, the cabinet discharges during high-load periods to reduce the highest power drawn from the grid. This supports demand management where local tariffs include demand-based charges.

Time-of-Use Energy Shifting

The system can charge during lower-price electricity periods and discharge during higher-price periods. Actual savings depend on tariff structure, cycle strategy, load profile and local grid rules.

Load Smoothing

Motors, pumps, compressors, refrigeration and production equipment can create short-term load changes. A grid-tied BESS cabinet can smooth part of these fluctuations and reduce stress on the grid connection.

AC-Side Energy Management

If the site also has grid-connected PV or other AC-side energy sources, the cabinet can be included in the site-level EMS strategy. PV connection is handled at system level; this model is not defined as a direct PV-input cabinet.

Grid Capacity Relief

At sites where transformer or grid connection capacity is tight, discharging during peak periods can reduce instantaneous grid demand. This is useful when load growth is faster than grid capacity expansion.

Scalable Cabinet Deployment

Projects that require more energy or power can use multiple cabinets. Parallel deployment allows capacity growth by cabinet quantity, while AC protection, communication and EMS coordination are designed as one system.

Liquid Cooling and Battery Life

In high-capacity C&I BESS cabinets, the key thermal issue is not only average temperature. The more important issue is temperature difference between cells and modules. When some cells stay hotter than others during daily cycling, they age faster and can reduce the usable capacity of the whole battery system.

Better Temperature Uniformity

Liquid cooling transfers heat through coolant circulation instead of relying only on cabinet airflow. This helps reduce temperature spread between battery modules and supports more consistent aging behavior.

Reduced Local Hot Spots

Hot spots accelerate thermal stress and may make individual cells degrade faster. Liquid-cooled battery modules are designed to move heat away more evenly during charge and discharge cycles.

Longer Usable Service Life

Compared with conventional air-cooled cabinet layouts, liquid cooling is selected to support longer usable battery life under comparable operating conditions by reducing heat accumulation and cell-to-cell temperature differences.

Higher-Capacity Cabinet Layout

The 261kWh and 522kWh configurations place large battery capacity into cabinet form. Liquid cooling makes this high-capacity layout more practical by improving heat transfer from battery modules.

Daily Cycling Stability

C&I systems often charge and discharge daily for peak shaving or tariff shifting. More stable thermal conditions help the battery system maintain predictable operation over repeated cycles.

Lower Dependence on Room Airflow

Air-cooled cabinets rely more heavily on ambient air and ventilation path design. Liquid cooling gives the battery modules a more direct heat-transfer route, which is valuable in dense cabinet installations.

Model Selection

The two configurations share the same 832V LiFePO4 battery platform and liquid-cooling architecture. Selection mainly depends on required AC power, usable energy capacity, installation footprint, foundation load and site demand profile.

125kW / 261kWh

Select this model for sites with moderate peak demand, smaller installation space and lower AC current requirements. It is suitable for grid-tied peak shaving, tariff shifting and load smoothing where 125kW AC power is sufficient.

Best FitSmall and medium factories, commercial buildings, gas stations and supermarkets.

Rated Power125kW AC input / output.

Battery Energy261kWh.

Rated Capacity314Ah.

Max. AC Current189A.

Cabinet Size980 × 1300 × 2250mm.

WeightAbout 2400kg.

250kW / 522kWh

Select this model for larger load sites, longer energy-shifting needs and higher AC-side power requirements. The larger cabinet doubles the battery energy, but requires more installation space, higher AC current capacity and stronger foundation planning.

Best FitLarger factories, industrial parks, commercial complexes and high-load C&I sites.

AC Input Power250kW.

Battery Energy522kWh.

Rated Capacity628Ah.

AC Output Window250kW/1min, 200kW/3min, 175kW/5min.

Cabinet Size2000 × 1350 × 2300mm.

WeightAbout 4700kg.

For the 250kW/522kWh model, the AC output rating includes short-duration output windows. Project load profile should be checked when long-duration continuous high-power discharge is expected.

Technical Specifications

Parameter	125kW / 261kWh	250kW / 522kWh
Model	IYP-B261L-125G3-HX1	IYP-B522L-250G3-HX1
Product Type	On-grid BESS Cabinet / Liquid Cooling	On-grid BESS Cabinet / Liquid Cooling
Integrated Platform	BMS / PCS / EMS	BMS / PCS / EMS
Battery
Battery Type	LiFePO4 Battery	LiFePO4 Battery
Rated Energy	261kWh	522kWh
Nominal Voltage	832V	832V
Rated Capacity	314Ah	628Ah
AC Input
Rated Power	125kW	250kW
AC Voltage	400Vac/230Vac (L1/L2/L3/N/PE)	400Vac/230Vac (L1/L2/L3/N/PE)
Rated Frequency	50Hz/60Hz	50Hz/60Hz
Max. AC Current	189A	375A
AC Output
Rated Power	125kW	250kW/1min 200kW/3min 175kW/5min
AC Voltage	400Vac/230Vac (L1/L2/L3/N/PE)	400Vac/230Vac (L1/L2/L3/N/PE)
Rated Frequency	50Hz/60Hz	50Hz/60Hz
Max. AC Current	189A	375A/1min 300A/3min 265A/5min
General Parameter
Communication Type	RS485 / WiFi	RS485 / WiFi
IP Grade	IP65 (Battery)	IP65 (Battery)
Fire Protection System	Yes	Yes
Operating Temperature	-10°C–50°C	-10°C–50°C
Humidity Range	5%–95%	5%–95%
Altitude	<3000m	<3000m
Battery Cooling Method	Liquid cooling	Liquid cooling
PCS Cooling Method	Intelligent cooling	Intelligent cooling
Size	980 × 1300 × 2250mm	2000 × 1350 × 2300mm
Weight	About 2400kg	About 4700kg

Selection Notes

Use 125kW/261kWh for compact grid-tied storage projects requiring smaller footprint and lower AC current.
Use 250kW/522kWh when higher energy capacity and higher AC-side power are required.
Both models use 832V nominal LiFePO4 battery voltage, but rated capacity differs: 314Ah vs 628Ah.
The 250kW/522kWh model has short-duration AC output windows and should be matched with the real load profile.

Grid-Tied Boundary

Designed for on-grid operation with utility grid voltage and frequency reference.
Standard grid-tied output stops when the utility grid is unavailable.
Standalone island operation requires separate grid-forming control, switching and protection design.

Project Checks

Grid voltage, AC protection and switchgear capacity.
Transformer capacity, cable size and cabinet foundation load.
EMS strategy for peak shaving, tariff shifting and multi-cabinet operation.
Certification document scope for the target market.

AINEGY On-grid BESS Cabinet / Liquid Cooling grid-tied energy storage system integration with BMS PCS EMS grid load and parallel cabinets

System Design & Grid Integration

The cabinet is an AC-side grid-tied energy storage unit. The integrated PCS handles bidirectional AC/DC conversion, the BMS protects battery operation, and the EMS controls charge/discharge timing according to site load, tariff strategy and grid-tied operating logic.

Grid ConnectionConfirm AC voltage, frequency, grid connection capacity, protection settings, metering logic and local grid code requirements.

AC DistributionConfirm AC cable size, breaker selection, switchgear capacity, cabinet quantity and protection coordination.

Load ProfileUse 15-minute or hourly load data when available. Select the cabinet size based on peak demand, discharge duration and operating target.

EMS StrategyDefine whether the main target is peak shaving, time-of-use shifting, demand management, load smoothing or multi-cabinet dispatch.

Thermal LayoutReview ambient temperature, cabinet spacing, service access, liquid-cooling maintenance route and heat rejection around the cabinet.

Outdoor UseIP65 (Battery) supports higher enclosure protection, but foundation, drainage, cable entry and local weather exposure still need project-level design.

AINEGY On-grid BESS Cabinet / Liquid Cooling applications for factory commercial building gas station industrial park and grid-tied energy storage projects

Typical Applications

This liquid-cooled on-grid BESS cabinet is mainly selected for commercial and industrial sites where grid-tied storage, peak-load reduction and electricity cost optimization are more important than standalone power supply.

FactoriesFor production sites with daily load peaks, motor loads, compressor loads or equipment-driven demand fluctuations.

Commercial BuildingsFor supermarkets, offices and commercial complexes with predictable daily power demand and time-of-use tariff exposure.

Gas StationsFor service sites with lighting, refrigeration, pumps and additional power demand that may create local peak-load pressure.

Industrial ParksMultiple cabinets can be configured across load zones when larger energy capacity or distributed cabinet layout is required.

AC-Side PV SitesFor sites where grid-connected PV already exists at system level and the BESS cabinet is used as part of the AC-side energy strategy.

Capacity-Limited SitesFor locations where grid capacity expansion is difficult and energy storage can reduce peak grid demand under normal grid-tied operation.

Certification and Documentation Support

AINEGY products are designed and manufactured with reference to relevant international safety, transport, electrical, grid-connection and material standards. Documentation support can be provided for applicable models and project requirements, including battery transport, material safety, electrical compliance, grid connection and fire-safety-related documentation. Final document scope depends on the selected configuration and target market.

FAQ

What project data should be checked before selecting the AINEGY On-grid BESS Cabinet / Liquid Cooling?Review 15-minute or hourly load data, peak demand, target discharge duration, time-of-use tariff periods, demand-charge rules, grid voltage and frequency, transformer capacity, switchgear capacity, installation environment and target operating strategy.

How should a buyer choose between the AINEGY 125kW/261kWh and 250kW/522kWh configurations?Select 125kW/261kWh for moderate peak demand, smaller footprint and lower AC current. Select 250kW/522kWh for larger sites and higher energy demand, while checking the short-duration AC output windows, foundation load, cabinet access and AC-side protection capacity.

What grid-side conditions must be confirmed before integration?Confirm 400Vac/230Vac three-phase compatibility, grid frequency, transformer capacity, switchgear rating, breaker and cable sizing, metering position, protection coordination, anti-islanding requirements and local grid-connection approval process.

Can this cabinet support backup or islanded operation during a grid outage?Under standard grid-tied operation, no. The cabinet follows utility grid voltage and frequency and stops grid-tied output during an outage. Backup or islanded operation requires separate grid-forming design, transfer switching, protection logic and project-level approval.

What EMS dispatch strategy should be defined before project design?Define whether the priority is peak shaving, time-of-use shifting, demand-charge reduction, load smoothing or multi-cabinet dispatch. The EMS strategy should also specify charge/discharge windows, SOC limits, export limitations and daily cycle expectations.

What installation conditions should be reviewed for the liquid-cooled IP65 battery cabinet?Review indoor or outdoor location, ambient temperature, humidity, altitude, foundation load, cabinet spacing, drainage, cable entry direction, service access, heat rejection path and liquid-cooling maintenance expectations before final layout.

What external electrical work remains outside the cabinet scope?Site-side AC distribution, upstream and downstream breakers, switchgear, metering, transformer interface, grounding, short-circuit protection, foundation, lifting plan and final grid-connection work should be designed at project level.

What should be confirmed for multi-cabinet parallel deployment?Confirm cabinet quantity, EMS coordination, communication topology, AC protection, switchgear capacity, transformer capacity, available grid connection capacity, installation spacing and maintenance access before paralleling multiple cabinets.

Related C&I ESS Products

Confirm the Right AINEGY Grid-Tied BESS Cabinet for Your Project

Send your load profile, required power, required energy capacity, grid voltage, electricity tariff structure, installation environment, cabinet quantity, communication requirements and target market. AINEGY will help review whether the 125kW/261kWh or 250kW/522kWh AINEGY On-grid BESS Cabinet / Liquid Cooling configuration is suitable.

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