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SunWell Energy

1.45MWh 750kW Liquid-Cooled ESS Container

1.45MWh 750kW Liquid-Cooled ESS Container

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Model

The 1.45MWh 750kW Liquid-Cooled ESS Container is a containerized LiFePO4 system for utility and C&I sites. Adding more modules keeps the same inverter and wiring, so capacity grows exactly as demand grows. Standard communication ports pair it with mainstream inverters for straightforward system integration. Its cells are rated for 6000 deep cycles, so the pack keeps delivering through years of daily charge and discharge.

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1.45MWh 750kW Liquid-Cooled ESS Container — Technical Specifications
MODELSW-ePowermax-750-1446L
Battery parameters
Battery Packs Quantity30
Cell Capacity314Ah
Rated Voltage 768V
Voltage Range600V~876V
Rated Energy1446.912kWh
Max.Continuous Charging/Discharge Current942A
Cycle Life6000 times @25°C,5C/0.5C, 90%DOD/70%SOH
PV parameters
Max. PV Input Power720kW
Rated Input Voltage600Vdc
Max.Input Voltage1000
MPPT Voltage Range150~950V
PV Input Current45A*32
AC side parameters
Max.Input/Output Power900kVA
Overload Capacity1.1Pn,lasting for 10minutes;1.2Pn,lasting for 1 minute
Max. Efficiency98.00%
Voltage3L/N/PE,400Vac
Frequency50/60Hz
THDI≤3%
Power Factor1 leading to 1 lagging
System parameters
Product Dimension(W×D×H)6058×2438×2591mm
Net WeightAbout 22.5T
Contact MethodCAN/RS485/WIFI
Design Life10 Years
Scalability/
ProtectionIP54
Cooling MethodLiquid cooling
Operating Temperature-25~60°C(＞45°C reduction)
Humidity10%~95%RH
Altitude<2000m

Features

  • Turnkey container integrates generation, storage and control. The unit combines PV, LiFePO4 battery and PCS in one ISO enclosure, pre-commissioned for rapid deployment.
  • Intelligent dispatch coordinates all power sources. The EMS orchestrates solar, battery and diesel by load and resource, optimizing fuel use and cycling automatically.
  • Liquid cooling sustains MWh-scale cycling. A central loop holds thousands of cells in a narrow band, maximizing round-trip efficiency and life.
  • Scalable blocks serve large sites. Containers link into MWh arrays so capacity and power scale with utility, mining and C&I needs.
  • Remote monitoring supports unattended operation. CAN/RS485/WiFi and EMS scheduling give visibility into generation, consumption and faults from anywhere.
  • Multi-level protection meets container ESS codes. Pack, rack and container BMS layers plus fire suppression contain faults before they escalate.

Applications

  • Commercial Peak Shaving: Discharges the 1446.912kWh bank during high-tariff windows to cut demand charges at factories, warehouses, and campuses.
  • Factory & Industrial Backup: Supplies up to 750kW (900kVA peak) at 400Vac to keep production lines and essential loads running through outages.
  • Solar Self-Consumption: The 720kW MPPT stores daytime PV and releases it in the evening, raising on-site renewable use.
  • Microgrid & Off-Grid Sites: Runs grid-independent as the core energy buffer for remote communities, mines, or islands.
  • Solar-Diesel Hybrid: The optional 1000kW STS cabinet lets a diesel generator start and parallel the battery for fuel-saving hybrid operation.
  • C&I Solar Farm Buffer: Buffers a co-located PV plant's output for smoother, schedulable grid export.

Energy Management & System Architecture

The SW-ePowermax-750-1446L is a turnkey 1.45MWh liquid-cooled ESS container that integrates a 750kW PCS, a 720kW MPPT, and an optional 1000kW STS cabinet into one prefabricated unit. Its 1446.912kWh LFP battery (314Ah cells, 768V rated, 600–876V range) stores energy, while the MPPT accepts up to 720kW of PV at 150–950V for direct solar conversion.

A single-PCS-to-single-cluster design removes parallel circulating currents and capacity loss, and the BMS manages charge/discharge with 6000-cycle life at 90% DOD and 70% SOH. Intelligent control runs through CAN/RS485/WIFI, liquid cooling holds efficiency up to 98% AC output, and one-cluster-one-management keeps power flow, load sharing, and energy scheduling coordinated across the system.

Grid, Backup & System Integration

The container operates grid-connected or off-grid, feeding up to 750kW (900kVA peak) at 400Vac, 50/60Hz, with THDi ≤3% and a power factor adjustable from 1 leading to 1 lagging. It shaves peaks, shifts load, and maximizes solar self-consumption, while the 1.1Pn/10min and 1.2Pn/1min overload capability covers short demand surges.

As a Solar-ESS-Diesel integrated container it can also pair with a diesel generator through the optional STS cabinet for hybrid backup, and the 10-year design life suits long-term commercial deployment. Delivered as a complete turnkey single-cluster unit (6058×2438×2591mm, about 22.5T), it uses IP54 protection and CAN/RS485/WIFI monitoring within −25°C to 60°C (derated above 45°C).

Warranty

LiFePO4 batteries for 5 years, hybrid inverters for 2 years, and solar panels under the supplier policy of a 10-year product warranty plus 30-year linear power warranty. If you experience any quality issues within the applicable warranty period, please contact us and we will arrange a replacement or repair promptly.

Frequently Asked Questions

Will it work with my PV array?

Yes. The built-in 720kW MPPT accepts PV at 150–950V up to 720kW, connecting directly to most commercial arrays. Your installer sets the MPPT range at commissioning.

Can it run my site during an outage?

In off-grid or backup mode it supplies up to 750kW (900kVA peak) at 400Vac, 50/60Hz. With the optional 1000kW STS cabinet it can also start from a diesel generator.

How long will the battery last?

The LFP cells are rated 6000 cycles at 90% DOD and 70% SOH under 25°C, 5C/0.5C, with a 10-year design life. Real life depends on temperature and cycling depth.

Is it hard to install?

No. It ships as a prefabricated container (6058×2438×2591mm, ~22.5T) with PCS, MPPT, and battery pre-integrated; crews set it on a pad and commission via CAN/RS485/WIFI.

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