Since 2007, our company is specialized in the design, manufacture and marketing of retention tanks and fireproof systems for electrical transformers, in order to avoid soil pollution.

SONEC became in May 2020 the Authorized “Services” Partner of the manufacturer Kolektor ETRA and supervises the installations in France of all its High Voltage transformers up to 500MVA and 420kV.

Our factories work :



stainless steel

Our strengths

  • Flexibility of deadlines

  • Compliance with standards

  • Tests carried out at CNPP

  • Reactivity to better meet your needs

  • French production