125kW / 261kWh Battery Energy Storage System.
Liquid-cooled energy storage for system services and backup power.
This hardware is the site-level asset used by ZynexGroup in system services operation. The commercial model, payment structure, and project process are explained on the How It Works page.
See how the commercial model works →Grid failure response and load transition.
The system is equipped with a Static Transfer Switch (STS). Upon detecting grid voltage anomalies or total failure, the system transitions to battery power in milliseconds, preventing operational disruption for connected machinery and IT infrastructure.
Overload Capacity
120% rating to absorb inrush currents during machinery restarts.
Load Balancing
Three-phase, four-leg dynamic balancing adapts to variable grid environments (380/400V ± 15%).
261kWh capacity within a 1.45m² footprint.
The cabinet utilizes high-density Lithium Iron Phosphate (LFP) 314Ah cells. The physical architecture is designed to minimize required floor space in industrial facilities. Multiple units can be installed adjacent to one another.
Dimensions
989mm (W) × 2471.5mm (H) × 1465mm (D)
Weight
2.8 Metric Tons
Enclosure Rating
IP54, C4 Corrosion Resistance standard.
Closed-loop liquid cooling infrastructure.
Operating temperatures dictate cell degradation rates. This system employs liquid cooling to maintain internal DC-side temperature differences within a ±1.5°C margin.
OPERATIONAL PARAMETERS
Three-tier safety and containment protocol.
The system utilizes independent layers of hardware and software safety mechanisms to detect thermal events and contain them at the component level.
System Services Integration.
The battery utilizes the facility's existing grid connection to participate in system service markets like frequency regulation. Dynamic bandwidth management ensures the site's primary operations always retain priority access to the full grid capacity. The battery only utilizes available margin, meaning business operations are never restricted.
Configurable Outage Protection.
In the event of a total grid failure, the system physically isolates the facility and supplies continuous power to prevent costly production stops. Operators can reserve a specific State of Charge (SoC) to guarantee the facility can survive off-grid for a specifically defined length of time before safe shutdown or grid restoration.
Generation Optimization.
Co-locating the battery with solar arrays or wind turbines directly optimizes the operational output of renewable assets. The system captures energy during peak generation windows to prevent curtailment, and shifts this capacity to deliver system services or inject power during periods of maximum grid demand.
Hybrid Infrastructure.
Combining local consumption, renewable generation, and battery storage creates a fully optimized grid node. The operating system actively balances these three vectors: maximizing the use of onsite wind and solar, guaranteeing power availability for heavy machinery, and earning revenue from all remaining capacity through system service markets.
Autonomous fault recovery and network expansion.
The operating system manages load balancing and diagnostic protocols without requiring manual oversight. Faults are isolated at the single-point level with an active recovery time of 0 seconds.
Parallel Operation
Supports up to 20 grid-tied units operating in a decentralized, autonomous network.
Maintenance
Firmware and strategy updates are executed via Over-The-Air (OTA) protocols with breakpoint recovery.
The investment
396.000 DKK per unit
40% deposit required
6-year guaranteed payback with stable monthly payments
Minimum 400A grid connection
ZynexGroup handles installation, permitting, monitoring, servicing, and market bidding — you don't need to do anything.
ZG-261
System Specifications.
ZG-261 is specified as a complete cabinet system. The overview below presents the technical data in a clear operational structure.
DC Parameters
261kWh
Battery Capacity
314Ah (LFP)
Cell Capacity
1P260S
Battery PACK
832VDC
Rated Voltage
728Vdc ~ 936Vdc
DC Voltage Range
AC Parameters
125kW
Rated Power
380V/400V, -15%~10%
Rated Voltage
3P4W+PE
Connection Method
50Hz
Rated Frequency
-1 (Leading) ~+1 (Lagging)
Power Factor
≤3% (at rated power)
THDi
Protection Functions
Molded Case Circuit Breaker
AC Side
Isolator Switch + Fuse
DC Side
Aerosol + Water Fire Suppression System
Fire Protection
Environment Conditions
-30~50°C (Derating above 45°C)
Operating Temperature
<=2000m
Altitude
0~95% (Non-condensing)
Relative Humidity
Physical Characteristics
~2.8T
Weight
~989mm x 2471.5mm x 1465mm
Dimensions (W×H×D)
C4
Corrosion Resistance Level
IP54
Protection Rating
Others
Liquid Cooling
Cooling Method
CAN/Ethernet/485
Communication Interface
Ready to find out if your facility qualifies?
Tell us about your site and we will give you an honest assessment. No pressure, no sales pitch.
Check if your facility qualifies