Present to Past

502 MVA 400kV transformer production was completed.

The United Nations (UN) Global Compact was signed.


450 MVA; 400/161/31,5 kV Auto transformers production, successfully short-circuit withstand tested at Independent International Test Laboratory KEMA.

First 502 MVA, 380 kV Auto transformers order received for Saudi Arabia Electricity Company.

Lowest Noise Reactor produced 100 MVAr with LpA 48 dB.

Production of 500 MVA, 400/20-22 kV Step-up transformer.


Production of 2 units 200 MVA, 330/161 kV Phase-shifting transformers.

New Dry Type Transformer factory completed.

New modern dry type transformer production facilities are opened.

First 180 MVA 500 kV magnetically control shunt reactor produced.

First Phase Shifting high power transformer 200 MVA 330/161 kV tested and delivered.

Production of first Magnetically Controlled Shunt Reactor 180 MVA, 500 kV unit with 8-legs.


BEST manufactured the world’s largest arc furnace transformer (310MVA 34,5/1,8…1,389kV) to be used in İÇDAŞ iron and steel plant.

ISO EN 3834-2 Certification.

122,16MVAr 420kV, 146,59MVAr 420kV and 183,24MVAr 420kV shunt reactors manufactured for TEIAS (Turkish Electricity Transmission Corporation) projects and successfully completed factory acceptance tests.

ISO EN 3834-2 Certification.

Production of world largest arc furnace transformer 310 MVA – 180 kAmps per phase.

Production of 387MVA 750kV test transformer for reactor testing.

Production of 120MVAr 525kV and 160MVAr 525kV shunt reactors.

Production of 167MVA 525kV autotransformers.


BEST started to produce of cast-resin dry type transformers.

High-end Magnetic Core production plant established.

BEST was certified by the Ministry of Science, Industry and Technology as an R&D Center.

After acquisition of AEG contracting (now called BETAS) BEST started to work to deliver transformer for turnkey substations up to 525kV with BETAS.

Completely new and modern OSB factory with the unit capacity up to 1000MVA and 750kV started production as a second plant.

Production of 310MVA, 395kV Generator Step-up Transformers.

ISO EN 18001 Certification.

On-site Test Laboratories were accredited according to IEC ISO 17025.


Modern mechanical production plant established.

First 250MVA, 380kV autotransformer production, successfully mechanical short-circuit withstand tested at Independent International Test Laboratory (KEMA) and supply to Turkish Electricity Transmission Corporation (TEIAS).


Production of 80/100MVA, 380kV single-phase power transformers

Production of first 100MVA, 154/31,5kV power transformer


Production of first 170kV voltage level transformer

Production under EBG (Electro Bau AG) License


Started Production

BEST is established