Liquid-Cooled Design
Active thermal management with liquid cooling.
125kW / 261kWh Liquid-Cooled Energy Storage Cabinet
BSC-261KWH
Outdoor commercial energy storage with liquid cooling, three-phase power conversion and grid-connected or off-grid operation.
125 kWRated output261 kWhRated energyLiquid CoolingThermal management
System overview
Liquid-Cooled Energy Storage for C&I Sites
The BSC-261KWH combines a 261kWh battery system and 125kW power conversion in an outdoor liquid-cooled cabinet for commercial and industrial energy storage.
Designed for sites requiring energy shifting and flexible grid-connected or off-grid operation, with modular construction and RS485, CAN and Ethernet communication.
Modular Architecture
1P260S configuration with 261kWh rated energy.
Grid & Off-Grid Operation
125kW rated output in both operating modes.
System Communication
RS485, CAN and Ethernet interfaces.
Cabinet configuration
Inside the Liquid-Cooled Cabinet
Battery storage, power conversion and thermal management in one outdoor cabinet.
Battery System
1P260S · 832VDC261kWhPower Conversion
230 / 400V · Three-phase125kWLiquid Cooling
Thermal management−30 to 55°COutdoor Cabinet
IP66 in the parameter table
Communication
RS485 / CAN / Ethernet
Modular Construction
Designed for long-term cycling
View Cabinet Configuration +
- Battery configuration · 1P260S
- 261kWh rated energy; 832VDC rated voltage; 728–910VDC voltage range.
- Power conversion · 125kW rated
- Grid-connected and off-grid AC output at 230/400V, 50/60Hz.
- Cooling system · Liquid cooling
- Coolant: 50% ethylene glycol aqueous solution.
- Cabinet · 1320 × 1005 × 2200mm
- Published net weight: 2509kg.
- Communication · RS485 / CAN / Ethernet
- Interfaces listed in the product datasheet.
Technical specifications
BSC-261KWH Specifications
Explore system, AC and battery-side data from the published parameter table.
- Model
- BSC-261KWH
- Rated energy
- 261kWh
- Configuration
- 1P260S
- Rated battery voltage
- 832VDC
- Battery voltage range
- 728–910VDC
- Cooling mode
- Liquid cooling
- Coolant
- 50% ethylene glycol aqueous solution
- Operating temperature
- −30 to 55°C
- IP level (parameter table)
- IP66
- Communication
- RS485 / CAN / Ethernet
- Cabinet dimensions
- 1320 × 1005 × 2200mm
- Packaging dimensions
- 1410 × 1200 × 2380mm
- Net / gross weight
- 2509 / 2589kg
- Rated output power
- 125kW
- Maximum output power
- 138kW
- Rated voltage
- 230 / 400V
- Voltage deviation
- −15% to +15%
- Output type
- 3W + PE / 3W + N + PE
- Maximum current
- 200A
- Rated grid frequency
- 50 / 60Hz
- Power factor
- 0.99
- Power factor range
- 1 (advance) to 1 (lag)
- Current distortion
- <2% at rated power
- DC component
- <0.5%
- Overload capability
- 110% long-term
- Maximum efficiency
- 98.5%
- Rated output power
- 125kW
- Maximum apparent power
- 138kVA
- Rated output voltage
- 230 / 400V
- Maximum output current
- 200A
- Rated frequency
- 50 / 60Hz
- AC voltage harmonic
- <3% with linear load
- Operating voltage, 3W + PE
- 615–950V
- Operating voltage, 3W + N + PE
- 650–950V
- Full-load voltage, 3W + PE
- 615–950V
- Full-load voltage, 3W + N + PE
- 680–950V
Product video
See the 125kW / 261kWh cabinet in action.
A closer look at the Bluesun liquid-cooled energy storage system.
Real projects
Real C&I Energy Storage Projects
Explore the 125kW / 261kWh installation in Romania and other Bluesun commercial energy projects.
Featured ProjectRomania
Romania · 2026
Explore Project →
125 KW / 261 KWh Solar Energy Project
Bluesun solar energy project + energy storage deployment in Romania completed in 2026 with a focus on reliable, long-term clean-energy performance.
125 KWPV Size
261 KWhStorage Capacity
Solar Energy Project + Energy Storage
Netherlands · 2026
Explore Project →
50 KW / 100 KWh Solar Energy Project
50 KWPV Size
100 KWhStorage Capacity
Solar Energy Project + Energy Storage
Myanmar · 2025
Explore Project →
50 KW / 72 KWh Solar Energy Project
50 KWPV Size
72 KWhStorage Capacity
Solar Energy Project + Energy Storage
Product resources
Technical Documents
Download the published datasheet for full technical details.
Product FAQ
Your questions, answered.
Key information from the BSC-261KWH datasheet.
What is the BSC-261KWH?+
It is a Bluesun outdoor liquid-cooled energy storage cabinet with 261kWh rated energy and 125kW rated AC output for commercial and industrial applications.
Can it operate on-grid and off-grid?+
The datasheet specifies both grid-connected and off-grid AC operation, each with 125kW rated output at 230/400V and 50/60Hz. Final operating arrangements depend on the project design.
What battery configuration is specified?+
The published configuration is 1P260S, with 832VDC rated voltage and a 728–910VDC battery voltage range.
How is the cabinet cooled?+
The cabinet uses liquid cooling. The specified coolant is a 50% ethylene glycol aqueous solution.
Which communication interfaces are available?+
The datasheet lists RS485, CAN and Ethernet communication.
What are the cabinet dimensions and weight?+
The cabinet dimensions are 1320 × 1005 × 2200mm, with a published net weight of 2509kg. Packaging dimensions are 1410 × 1200 × 2380mm, with a gross weight of 2589kg.
What operating temperature range is listed?+
The published operating temperature range is −30°C to 55°C. Installation and system design should follow the final product documentation.
Product inquiry
Plan Your Commercial Energy Storage System
Share your site location, load profile and required operating mode. Our team can help evaluate the right cabinet configuration for your project.
125kW / 261kWh Liquid-Cooled Energy Storage Cabinet
Model: BSC-261KWH Category: Solar Power System