isolated energy system
isolated energy system
isolated energy system

The FlexCombo-M250 district microgrid solution consisted by isolated energy storage modules, can extend and alleviate or even eliminate the demand for transformation and upgrading of power transmission and distribution facilities due to the sharp increase in the total power load of islands or urban blocks by peak load shaving. It allows users in islands and blocks to obtain strong voltage support and high-quality power quality at a small cost; it can also improve the local acceptance capacity of distributed energy and support the independent operation of island microgrids with the combination of solar energy technology.

isolated energy system


  • Parallel for scalability;
  • Charge/discharge combined efficiency up to 86%;
  • Certified ESS (UL1973, IEC 62619, UN 38.3, CE);
  • Containerized structure, waterproof and dustproof;
  • Gridpoint™ Controller on string management, DC mainstream connection, load dispatch, primary control, secondary control, fire control etc;
  • WeWattt™ Cloud-Based monitoring & control system enables digital and fully automated management of energy flows;
  • On-line trouble shooting by global service center;

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isolated energy system
isolated energy system

Key benefits

  • Ensures reliable, uninterrupted and quality power availability;
  • Maximizes fuel savings through the highest possible renewable integration;
  • Optimized cost by reducing 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;
  • Fulfils health, safety and environmental appropriateness;
Item M250-276 M250-552
DC data
Battery chemisty Lithium Iron Phosphate (LFP)
Cell life cycle 80% Retention with 5,000 Cycles @ 1C 25℃
Cell spec 3.2V/90Ah
Rack rated energy capacity 276kWh 552kWh
Rated voltage 768V
AC data
Rated AC power 250kW
Rated grid voltage 400V
Grid voltage range ±15%
AC rate of current 360A
General data
Dimension w/o clearances(L*W*H) 6,058*2,438*2,591mm
Weight of whole system <15T <20T
Degree of protection IP54
Operating temperature range -20~40℃
Max working altitude 3,000m/9,842ft
Communication interfaces RS485, Ethernet, GPRS
Certificates IEC62619, UN38.3, CE, UL1973