Tallinn Electrical Engineering Factory «Estel» was founded in 1870. Today, Company develops, manufactures and supplies a broad range of power converter equipment and power semiconductors, focusing on complex technological solutions and production “turnkey” delivery.

An absolute TET-ESTEL products advantage over its competitors is in consistently high quality of design and manufacture, evidenced through many years of successful operation experience by hundreds of customers and constant geography of delivery expanding.

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Official company trademarks estel logo.cdr
key The key to continued success of TET-ESTEL lies in its own unique high-quality innovative products design and production , developed with all the individual customer requirements. Company equipment significantly surpasses analogues of the other manufacturers by performance reliability and durability as well as by technical and economic indicators.
science Due to high scientific and technical potential along with  more than a century of experience, TET-ESTEL provides not just a narrow segment of standard equipment, but rather a multidimensional complex of solutions on a wide range of several technological applications. This includes so called “turnkey” equipment montage and delivery, full equipment maintenance and other services.
client An absolute TET-ESTEL products advantage over its competitors is in consistently high quality of design and manufacture, evidenced through many years of successful operation experience by hundreds of customers and constant geography of delivery expanding. Yet another fundamentally important vector of company service policy is focusing on customer’s individual requirements and special parameters of ordered equipment, while most competitors seek to unify their manufactured products. Therefore TET-ESTEL distinguishes quite rare for such kind of enterprise flexibility, that in turn maximizing all the benefits of B2B mechanism.
eco TET-ESTEL environmental safety of its products and processes of production is based on European laws and standards as well as international environmental regulations and requirements, its own standards and consumer specs. Company regularly deals with atmospheric pollutant emissions reduction, water waste, production waste reduction, etc. Modern technologies practice along with the new scientific data, as well as TET-ESTEL personnel knowledge and experience is the key to more efficient human labor, energy and raw materials usage and reduction of consumption and production waste.
stuff Team of high – level professionals is the company yet another critical strategic resource. TET-ESTEL staff is an indispensable source of energy and the most valuable constant generator of endless innovative ideas and solutions. TET-ESTEL development concept is that the maximum productivity, quality and competitiveness can only be achieved with each employee involvement into active production process, both at personal workplace and an enterprise as a whole.
November 27: Factory foundation day. Main Revel (Tallinn) railway workshops building completion.
1870
First Baltic electric train production.
1924
Tallinn steam-engine repair plant is founded on Main railway workshop base.
1945
An enterprise is renamed to Kalinin mercury rectifiers plant. Electortechnical Scientific Institute is founded (later aka Kalinin Plant scientific institute).
1958
First mercury rectifier for VL60 electric locomotive production.
1959
Power semiconductor devices design and production special bureau is founded.
1961
Beginning of semiconductor devices and converter equipment conveyor production.
1962
Due to enterprize production profile changing company has received the name of Kalinin electrotechnical plant.
1967
For the first time in USSR thyristor frequency converter is designed and manufactured.
1968
Power semiconductor devices for the first Lunar rover.
1970
Converters for high-voltage motors design and initial production.
1972
First aviation ground services converters design and development.
1974
Estel trademark registration.
1981
ESTEL becomes a Trust.
1994
Company quality management system is accredited according to ISO 9001:2001 international standard.
2001
One of ESTEL trust companies has restored its historical name and became Tallinn Electrotechnical Plant.
2006
New plant premises erection has been completed.
2007
Company has changed its name to Tallinna Elektrotehnika Tehas ESTEL AS
2012
Company Industrial safety management system is certified according to OHSAS 18001 international standard.
2014
Equipment production and supplement for 4ES5K Ermak - the most powerful electric locomotive in the World
2015