New company premises

Modern El-Insta building

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We will be exhibiting at AMPER 2020

28th International Fair

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UPQ Backup device

Device eliminating micro-outages

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Reactive power compensation

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Measuring instrumentation dry oil distribution power

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Renewable resources and accumulation

Check out our experience

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Measurement and diagnostics - expert activities
Devices lv hv vhv
Power quality systems
RES - renewable resources and accumulation
Own research

Leading supplier of low and high voltage solutions.

Completed projects
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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...

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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...

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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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El-insta on YouTube

Jan 13, 2020

Check out YouTube El-insta for all the videos together. About us and our partners, such as Finnish Merus Power, ARTEQ, Italian TESAR and SAREL, Slovenian ETRA and others. Videos are in Czech...

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Come and see the UPQ device that solves the quality of electricity - micro power outages

Oct 8, 2019

Are you dealing with micro-outage problems that cause damage to your production? Contact us and come to see how such a device works. The term in December 2019 is already occupied another term in...

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We have purchased a new ROTHLEHNER TM13T platform

Oct 5, 2019

We have purchased a new mobile platform for our assembly and service work - trailer up to 10m - telescopic arm brand ROTHLEHNER TM13T.

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Construction of new premises HALA A

Oct 1, 2019

New modern "HALL A" with large equipment for handling, storage, production, testing and presentation of dimensions 30x20x10m (length, width, height) Look at the progress of construction.

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We will be exhibiting at AMPER 2020

Sep 29, 2019

We cordially invite you to the AMPER 2020 trade fair in Brno, where we will be exhibiting from 17. - 20.3. Here we will present our services, digital multifunctional protection of the Finnish...

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Boilers and Power Equipment Conferences

Dec 28, 2018

We would like to invite you to the XXVIII. annual conference with international participation "BOILER AND ENERGY EQUIPMENT", where we will talk about accumulation and its use. The conference will...

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We will keep you informed of the latest developments in the energy sector and our service portfolio.


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