
125 kW / 260 kWh Battery Energy Storage System for Business. Backup Power
A ready-to-deploy All-in-One solution for storing and managing electricity at your facility. The 125 kW BESS with a nominal capacity of 260 kWh provides backup power for critical loads in the event of a grid outage. The KSTAR system combines a hybrid inverter, an LFP battery cabinet, and a built-in EMS in a single integrated unit.
- 125 kW power / 260 kWh capacity
- Switches to backup power in 10 ms
- 5-year warranty on the inverter and batteries
125 kW / 260 kWh BESS — a Ready Solution for Business
The 125 kW BESS with a nominal capacity of 260 kWh is designed to provide uninterrupted power for critical business loads. The usable battery capacity is 234 kWh at a permitted depth of discharge of 90%.
The KSTAR 125KW/260KWh ALL IN ONE C&I ESS is a high-voltage three-phase energy storage system that combines a 125 kW hybrid inverter, a 260 kWh battery cabinet, and a built-in EMS. The system uses EVE LFP battery cells with a capacity of 360 Ah.
Specifications
125 kW
260 kWh
234 kWh
LFP (LiFePO4)
Three-phase
5 years on the inverter and batteries
Estimated BESS Cost
BESS 125 kW / 260 kWh

Ready-to-deploy backup power solution for business
*The final cost is confirmed after a site visit and completion of the design work.
Practical Benefits of a BESS for Business
The system is designed to provide uninterrupted power for critical business loads. The BESS has a power rating of 125 kW and a usable battery capacity of 234 kWh. The actual backup duration depends on the facility’s load.
In the event of a grid outage, the BESS supplies power to selected critical business loads.
The actual equipment to be backed up is determined based on the facility’s load.
The system automatically switches to backup power when the external grid goes down.
Available usable battery capacity — 234 kWh.
Economic Impact of the BESS
Calculated individually
operating mode and load profile
The economic effect of a BESS depends on the frequency and duration of power outages, the cost of downtime, the facility’s load profile, and how the system is used. The exact payback period is calculated individually after analyzing the facility.
125 kW / 260 kWh BESS — for Businesses
This energy storage system is suitable for businesses that need to provide backup power for critical loads and keep equipment running during grid outages.
Suitable for:

A BESS can provide backup power for lighting, automation systems, servers, and other critical equipment during grid outages.

Suitable for backing up critical systems on farms, grain elevators, storage facilities, and production sites where power outages can interrupt essential processes.

Helps keep critical equipment and selected production processes running during power outages.

Can provide backup power for POS systems, lighting, automation, and other critical equipment required to keep the business operating.

Helps keep POS systems, lighting, automation, and part of the refrigeration equipment running during grid outages.

Suitable for backing up server equipment, communication systems, lighting, automation, and other critical loads.
Warranties
5 years (manufacturer’s warranty — 10 years)
5 years
2 years
From Site Audit to BESS Commissioning
Alteco manages the project from site analysis and system configuration to installation, setup, and BESS commissioning. A single contractor is responsible for equipment compatibility and proper system operation.
What we do:
• Analyze the facility’s electricity consumption profile
• Define the BESS objectives: backup power, peak shaving, energy arbitrage, and integration with a solar PV system
• Assess the technical feasibility of connection
• Develop a preliminary system configuration
What you get:
A preliminary technical assessment and an initial BESS configuration concept for your facility.
What we do:
• Confirm the BESS connection parameters
• Check whether the system power matches the facility’s load requirements
• Determine the required additional protection and switching equipment
• Prepare a technical and commercial proposal
• Agree on the final scope of supply
What you get:
An agreed BESS configuration with a detailed list of equipment, work, and costs.
What we do:
• Finalize the system configuration
• Confirm the scope of work, timeline, and cost
• Agree on the project stages and payment terms
• Launch the project
What you get:
Clearly defined terms of cooperation and a transparent implementation plan.
What we do:
• Deliver the KSTAR system to the site
• Prepare the installation area and grounding
• Install the All-in-One battery cabinet
• Complete the power connections
• Install the smart meter and additional protection equipment
What you get:
An installed and connected system ready for commissioning.
What we do:
• Check the installation of the battery and power sections
• Configure the BMS and EMS
• Test charging and discharging modes
• Test backup power operation
• Synchronize the BESS with the electrical grid
• Check the control and monitoring system
What you get:
A fully tested and configured BESS ready for normal operation.





