EL-INSTA ENERGO s.r.o. cooperates with major world companies headed by Finnish Nokian Capacitors, Merus Power, ARCTEQ VAMP protection and VACON converters. Italian companies TESAR transformer manufacturer and SAREL high voltage switchgear and many others. With them, she realized orders for distribution networks and railways in the Czech Republic and Slovakia, and in other sectors as well as in various countries of the world such as: Finland, Belarus, Russia, Iraq, Syria, Cuba and others. EL-INSTA ENERGO s.r.o. owns and operates 11 MW of solar power plants. Another expansion in 2017 began the construction of a new hall in the area of ​​Jízdárenská Here is the production and logistics part of the company held lectures and training for customers. The second headquarters of the company is located on Žižkova Street in Hrušovany u Brna, where there is another part of the team. Over time, the company has profiled itself in the field of heavy-current electrical engineering, power engineering and today it solves very technically demanding projects, such as the so-called transient events in heavy-current electrical engineering using complex cybernetic, electronic systems.


New Case Studies

OMYA converter transformer TESAR 5MVA 22 / 2x0,4kV

In 2020, we supplied TESAR Italy, 5MVA, 22kV / 2x0.4V dry epoxy encapsulated dry transformer for OMYA.

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Tesar transformer for ČEZ Tušimice battery

Our company supplied a dry transformer TESAR for the largest battery storage in the Czech Republic - ČEZ Tušimice, output 4MW, battery capacity 2.8MWh. Specifications of specially made TESAR transformer - 4MVA power, 6kV / 2x434V conversion, outdoor installation in IP33 protection, 3 vignette design.

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Třinecké Železárny 2x transformer ETRA 22 / 5,25 kV, 10 MVA

In 2019 we supplied 2x transformer ETRA 22 / 5.25 kV, 10 MVA overloadable to 12.5 MVA for Třinecké Železárny.

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Valeo Rakovník - delivery of HV switchgear and Tesar transformers

In 2018, we installed Valeo Rakovník - 22kV high voltage switchboard, high voltage distribution secondary switchboard modular - expandable air with SF6 switch disconnectors - Sarel Italy Lodi, type System6 630A 16kA 24kV and Tesar 2x 1000kVA transformers.

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ONSEMI Active filters Merus Power A2 2x 200A

In 2018, we supplied ONSEMI Active Filters for the Finnish manufacturer Merus Power A2 series 2x 200A.

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SEPS - Supply of outdoor single pole instrument transformers

In 2016 to 2018, we delivered 71 pieces of outdoor single-pole inductive instrument transformers Arteche 420 kV for the customer.

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BEKAERT Merus Power 2 x A200 Active Filters

In 2016, we installed BEKAERT Active Filters Merus Power 2 x A200

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CEZ - United Energy Komorany transformer ETRA 42.5MVA

In 2016, we delivered a power transformer ETRA 42.5MVA for the CEZ customer at United Energy Komořany.

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BEKAERT supply of HV switchboard SAREL 6kV

In 2016, we installed BEKAERT HV switchgear for SAREL SYSTEM6 including VAMP40 protection.

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CEPS - Czech Republic - substation Hradec u Kadaně

In 2016, we supplied a ČEPS compensation choke for the ČEPS substation 6x 15Mvar 33kV from the Finnish company Nokian Capacitors.

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Shopping center OC Chodov transformers TESAR and HV switchgear SAREL SYSTEM6

In 2016, we delivered to the customer K + B Elektro-Technik a shopping center OC Chodov 6x TESAR 1250kVA 22 / 0.4kV transformer and HV switchgear SAREL SYSTEM6.

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CEPS - Czech Republic - Reporyje substation

In 2016, we supplied CEPS to Řeporyje substation 3x 15Mvar from the Finnish company Nokian Capacitors.

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Spolchemie compensation 3 MVar 10 kV

In 2016, we installed 3 Mvar 10kV for Spolchemie customer

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CEZ - Dalkia Karvina ETRA 50MVA transformer

In 2015, we delivered to the customer ČEZ - Dalkia Karviná a power oil transformer ETRA 50MVA.

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SEPS - Slovak Republic - Rimavská Sobota substation

In 2015, we installed SEPS - Slovenská Republika - Rimavská Sobota substation - NC 6x 15Mvar 33kV compensating chokes.

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Bekaert Hlohovec block distributor with transformer TESAR 2500kVA 6kV, RH (Schneider) + RK 800kvar module EPCOS

In 2015 we installed Bekaert Hlohovec block distributor with transformer TESAR 2500kVA 6kV, RH (Schneider) + RK 800kvar module EPCOS

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ON SEMI Rožnov pod Radhoštěm Tesar transformers

In 2014 we carried out the installation at the customer ON SEMI Rožnov pod Radhoštěm Tesar 2500kVA + 1000kVA 22kV

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SLOVALCO passive fillets NC 2 X 30MVAr 110kV 2014

In 2014, we installed passive filters for the customer SLOVALCO NC 2 X 30MVAr 110kV.

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SEPS - Slovakia - Stupava Compensating Chokes

In 2013, we implemented compensatory dampers from the Finnish company Nokian Capacitors to the SEPS Stupava substation in Slovakia

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ŽSR - Railways of the Slovak Republic - Trnava transformer station

In 2006 we installed ŽSR - transformer station Trnava 27kV 50Hz 1-phase 2 x 6MVAr + balance protection for customer.

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CEPS - Czech Republic - SOKOLNICE near Brno

In 2006, we implemented compensation chokes from the Finnish company Nokian Capacitors to the ČEPS Sokolnice substation in the Czech Republic

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ŽSR - Railways of the Slovak Republic - transformer station Bánská Bystrica

In 2006, we installed 27kV 50Hz 1-phase 2 x 6MVAr + balance protection for ŽSR - transformer station Banská Bystrica.

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Basra refinery - supply of modular switchboards

In 2005 we delivered the Danish modular switchboard Holec to the Basra refinery in Iraq.

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See more case studies


Nokian Capacitors

Finnish manufacturer of passive compensation components and equipment operating in the market for over 60 years. Advantages (Capacitors and Reactors) Currently, the company belongs to the General Electric energy group.

Merus Power

The Finnish manufacturer specializes in the design, manufacture of reactive power compensation devices and higher harmonic filtering, backup devices to eliminate short-term drops and voltage failures.

ETRA výkonové transformátory

On the Czech market, we represent the Slovenian manufacturer of high-voltage, very high and especially high-voltage power transformers at Kolektor Etra.

Transformátory TESAR

The company was founded in 1979 and was the first company in Italy to use a new technology to manufacture resin-encapsulated power transformers. The manufacturer of dry, oil and instrument transformers.


European manufacturer of medium voltage switchgear and their components, production is concentrated in Lodi near Milan in Italy.

ARTCHE přístrojové transformátory

Spanish manufacturer of current transformers and voltages from 400V to 420kV (800kV).


Finnish manufacturer of flash protection and digital protection for power and industry.


Italian - French disconnector manufacturer up to 800kV, operating in the market since 1950, which is productive tied to the American company Southern States. Transmission networks, distribution, industry and infrastructure (railways).

Our customers









We are proud members

Energetické Třebíčsko

The founding members of the Energetické Třebíčsko association are the town of Třebíč, Třebíč District Chamber of Commerce, Třebíč Secondary Technical School, Dukovany municipality and Rouchovany municipality.

Solar Association

professional association of entrepreneurs in solar power and other photovoltaic supporters


Electric Car Industry Association


Czech Association of Employers In Energy

VUT Brno

We cooperate with the Brno University of Technology