Energy Storage Systems

Energy Storage Systems

CSIF is the owner of VESS (Vanadium Energy Storage Systems) — a company specializing in the deployment of large-scale industrial energy storage solutions.

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Through innovative technologies and strategic investments, VESS aims to enhance the reliability, efficiency, and sustainability of renewable energy systems. As part of CSIF, the company is committed to promoting a cleaner and more resilient energy future — driving progress toward a decarbonized global economy.

By delivering cutting-edge vanadium-based storage systems, VESS not only optimizes renewable energy integration into the grid but also plays a key role in building a sustainable and secure energy infrastructure for generations to come.

VESS's vanadium redox flow batteries (VRFB) provide consistent, long-duration, and reliable energy storage with superior lifecycle performance and operational safety. Some of the core advantages of this technology include:

  • Unlimited lifecycle with extended warranties of up to 30 years, corresponding to the proven service life of the active oxidation-reduction cells.
  • Full charge-discharge flexibility (0%-100%) without degradation of system performance.
  • Less than 1% electrolyte degradation over time, ensuring exceptional durability.
  • Certified BMS and EMS management systems, guaranteeing intelligent monitoring and optimized performance.
  • Intrinsic safety - zero fire risk due to the non-flammable, aqueous vanadium electrolyte.
  • Minimal environmental impact, utilizing 100% recyclable materials and supporting circular economy principles.
For more information, visit: vess.bg