BESS – Grid-compatible Transformer Solutions for Energy Storage
RE-Tech provides optimized transformer solutions for modern Battery Energy Storage Systems (BESS), in collaboration with Toshiba technology.
BESS applications support frequency control, peak shaving, and integration of renewable energy. RE-Tech’s transformers are designed for seamless integration with battery systems—delivering efficiency, reliability, and compliance.
BESS Transformers – Engineered for Nordic Demands
Together with Toshiba, RE-Tech has developed a transformer lineup suitable for Nordic conditions and grid requirements. Every BESS site requires a dependable power interface, whether for grid support, backup power, or peak management.
- Grid code compliance (VJV) – meets Finnish TSO (Fingrid) and DSO connection standards
- Three-winding design – enables simultaneous connection of grid and batteries via inverters
- Voltage levels 33 kV and 20.5 kV – compatible with Finnish grid infrastructure
- High efficiency and reliability – vital for long-term energy storage performance
Typical BESS Applications
- Grid frequency regulation
- Storing surplus energy for later use
- Balancing solar and wind generation
- Backup systems for industrial sites
- Microgrids and municipal energy projects
Project-specific Design and Delivery
Every BESS project is unique. RE-Tech delivers custom-engineered transformer systems tailored to each installation’s performance, safety, and efficiency requirements—from concept to commissioning.
Technical Specifications – BESS Transformers
Feature | Value / Option |
Voltage levels | 33 kV / 20.5 kV |
Transformer type | Three-winding transformer |
Power range | 2–10 MVA |
Efficiency | Low-loss, Tier 2 compliant |
Standards | VJV, Fingrid, IEC 60076, EU |
Partner | Toshiba |
