November 27: Factory foundation day. Main Revel (Tallinn) railway workshops building completion.
First Baltic electric train production.
Tallinn steam-engine repair plant is founded on Main railway workshop base.
An enterprise is renamed to Kalinin mercury rectifiers plant. Electortechnical Scientific Institute is founded (later aka Kalinin Plant scientific institute).
First mercury rectifier for VL60 electric locomotive production.
Power semiconductor devices design and production special bureau is founded.
Beginning of semiconductor devices and converter equipment conveyor production.
Due to enterprize production profile changing company has received the name of Kalinin electrotechnical plant.
For the first time in USSR thyristor frequency converter is designed and manufactured.
Power semiconductor devices for the first Lunar rover.
Converters for high-voltage motors design and initial production.
First aviation ground services converters design and development.
Estel trademark registration.
ESTEL becomes a Trust.
Company quality management system is accredited according to ISO 9001:2001 international standard.
One of ESTEL trust companies has restored its historical name and became Tallinn Electrotechnical Plant.
New plant premises erection has been completed.
Company has changed its name to Tallinna Elektrotehnika Tehas ESTEL AS
Company Industrial safety management system is certified according to OHSAS 18001 international standard.
Equipment production and supplement for 4ES5K Ermak - the most powerful electric locomotive in the World