VG-100®: Revolutionizing Transformer Fluids for a Greener Future

VG-100® stands as a pioneering natural ester, derived from edible soybean seeds through a proprietary process. Developed by Prolec GE in 2009, this revolutionary dielectric fluid has become a leading environmentally friendly alternative for distribution and power transformers (new installations and retrofill applications).


  • Transformer can be operated at 12% of overload capacity without compromising the life of the transformer.
  • Transformer can be operated at higher temperatures than mineral oil, 10°C above.
  • It is compatible with other natural ester liquids.
  • Safe energization in cold climates (up to -20°C and above) without additional processes.
  • A transformer filled with VG-100® can be diagnosed using the existing diagnostic methods.
  • VG-100® can hold up to 20 times more moisture than mineral oil… the key for lifetime extension… More reliable transformer, moisture migrates from paper to the liquid.
  • Longer life for the transformer insulation system.
  • Extended lifespan
  • More reliable operation… maintains higher dielectric strength at higher moisture compared to mineral oil.

Fire Safety

  • 2X high fire and flash point than conventional oil.
  • The risk of a fire can be mitigated using the VG-100®.
  • Suitable for indoor installations.
  • Self-extinguishing liquid.
  • FM & UL approved.
  • Creates a more reliable and safer condition during transformer operation.

Environmentally Friendly

  • Sustainable and recyclable.
  • 100% biodegradable.
  • Non-toxic liquid… Zero mortality.
  • Environmentally-friendly alternative.
  • Saves space (footprint), time and project permits.
  • Certificated by ​OECD.


  • Power transformers.
  • Renewable transformers.
  • Distribution transformers (Industrial & commercial applications).
  • Retrofilling alternative for old transformers.