Sweden 1075kWh Microgrid Project | 0 Second Seamless Switching
Project Configuration
500kW/1075.2kWh BESS (5×215kWh BESS cabinets)+ EMS + 0 Second Seamless Switching + diesel generator + 400kWp solar system
Project Background
A commercial customer in Sweden previously used a simple power system with only solar PV and diesel generators, with no energy storage installed. The customer faced long-term challenges in power supply and cost control. When the grid was working normally, a large amount of excess solar power could not be stored and went to waste. When the grid power failed, the customer had to switch to diesel generators, which incurred high fuel and operation costs, failing to deliver stable and clean power for critical loads.
Technical Challenges & Breakthroughs
The Challenge
The original system ran in isolation: PV, grid and diesel generator were uncoordinated, with no smooth grid‑tied / off‑grid switching.
Our Solution
We deployed 5×215kWh integrated storage cabinets and adopted our proprietary zero‑second seamless switching technology, which completely eliminates power gaps during switching. The system reacts instantly when the grid fails or recovers, delivering truly uninterrupted power with zero user perception.
PV
BESS Cabinet
Diesel Generator
Load
EMS
Core Technical Advantages
Intelligent multi‑energy coordination
Grid, PV, energy storage and diesel generator operate in fulllinkage.
Dual stable modes
Support PV‑storage direct power supply & diesel‑storage off‑gridpower supply.
Full automatic switching
Auto switch between grid‑tied and off‑grid modes without manualoperation, keeping stable power under all conditions.
Project Data & Benefits
Power supply stability
The 0 second seamless switching system greatly cuts down power interruptions. Based on the operation data from January 16, 2026 to April 16, 2026, the annual avoided outage duration is about 5–6 hours. Calculated at a customer outage loss of USD 5,000 per hour, the system can prevent approximately USD 25,000–30,000 in outage-related losses every year, ensuring stable production and operation.
PV power saved
167,010 kWh of power saved on the PV side to date, maximizing renewable energy utilization and eliminating PV waste.
Contact Us for Customized Solutions
If you face power instability, high energy costs or renewable energy waste, our zero‑second switching microgrid solution can be tailored to your scenario. Contact us for one‑on‑one professional consultation—let's build a reliable, smart and low‑carbon power system for your project.
