AGreatE’s ATEN 250kW BESS (Battery Energy Storage System) is an all in one (LFP) battery energy  storage system (BESS). Designed around a  250kW power platform, the 275kWh, and  550kWh battery storage options allow for  easy and reliable commercial, industrial, and  farm applications.

The ATEN 250kW BESS is designed to seamlessly work with a number of different energy sources including Solar, Grid, and Diesel Gensets are paired together to make mini-grid applications.

ATEN 250kW Benefits

  • Seamless switching capability between PV, Genset, Battery, or Grid power
  • The 250kW PCS cabinet containing a 250kW PCS with 500-850V DC bank voltage range
  • AC power is converted to 400~480V AC through the transformer to support the load
  • Battery banks are charged via the DC/DC converter via PV, Grid, or Genset

250kW battery energy storage system

Key Benefits

  • Ensures reliable, uninterrupted, and quality power availability
  • Maximizes fuel savings through the highest possible renewable integration
  • Optimized cost by reducing the number of generators required
  • High power quality by stabilizing the power systems against fluctuations in voltage and frequency
  • Achieves a secure and sustainable energy mix, together with energy efficiency
  • Engineered for rugged environments and extreme weather conditions

250kW BESS Systems Include

The ATEN 250kW BESS (battery energy storage systems) is an all-in-one hybrid energy storage system designed around a 250kW hybrid power platform and is compatible with PV solar, grid, and diesel genset energy sources. It’s compact footprint makes it an ideal turnkey solution for community microgrids, island microgrids, and commercial & industrial applications.

250kW battery energy storage system

ATEN 250kW Systems are fully certified and include:

  • The system storage container
  • 250 kW power conversion system (PCS)
  • ATEN R138 Racks (4 to 8 depending on energy requirement)
  • BESS Controller with Battery Management System
  • HVAC System for temperature and humidity management
  • WiFi system monitoring so you can check performance anytime
  • System safety labels for better user safety and awareness
  • Installation manual for the entire BESS system
  • Commissioning and annual inspection documents
  • Electrical 3 line & mechanical drawings

Our ATEN BES Systems are designed to make logistics, installation, and commissioning easier.

ATEN 250kW BESS System Diagram



Electrical Specifications

ElectricalATEN 250-276ATEN 250-552ATEN 250-1104ATEN 250-1656
Rated Energy Capacity276kWh552kWh1104kWh1656kWh
Rated DC Voltage768V768V768V768V
Rated AC Power250kW250kW250kW250kW
Rated Grid Voltage400V/480V400V/480V
AC Rate of Current360A/301A360A/301A360A/301A360A/301A
Grid Frequency Range50Hz/60Hz ± 2.5%50Hz/60Hz ± 2.5%50Hz/60Hz ± 2.5%50Hz/60Hz ± 2.5%
Isolation Method3 Phase 4 Line Transformer3 Phase 4 Line Transformer3 Phase 4 Line Transformer3 Phase 4 Line Transformer

General Specifications

GeneralATEN 250-276ATEN 250-552ATEN 250-1104ATEN 250-1656
Dimension (L/W/H)6058/2438/2591mm6058/2438/2591mm12192/2438/2591mm12192/2438/2591mm
Protection RatingIP54IP54IP54IP54
Operating Temperature-20 ~ 40°C-20 ~ 40°C-20 ~ 40°C-20 ~ 40°C
Max Altitude3000m3000m3000m3000m
Communication InterfacesRS485, Ethernet, GPRSRS485, Ethernet, GPRSRS485, Ethernet, GPRSRS485, Ethernet, GPRS
CertificationIEC62619, UN38.3, CE, UL1973, UL9540AIEC62619, UN38.3, CE, UL1973, UL9540AIEC62619, UN38.3, CE, UL1973, UL9540AIEC62619, UN38.3, CE, UL1973, UL9540A

Learn More

The accuracy or completeness of the System Information is not guaranteed and is subject to change without notice. No license under any AGreatE or third party intellectual property rights is implied or granted with this Information. Customers are solely responsible for evaluating and selecting the Systems and determining whether each System is fit for a particular purpose and suitable for its particular use and method of application. Our Systems are not manufactured to any Customer requirements or specifications unless expressly agreed to in writing by AGreatE.