Inspired by energy

Company overview

We are a leading manufacturer and supplier of uninterruptible power supply systems, as well as remote monitoring and supervisory systems. We provide the full range of services, starting from the definition of customer needs, through analysis and design, to equipment delivery and system implementation. Additionally, we support our customers with aftersales service, consulting and training.

Telzas Sp. z o.o. is a part of a dynamically growing ETC Group. Our solutions were successfully implemented in telecommunications, IT, Internet services, data transmission, energetics and industry.

Developing new technologies for more efficient and reliable energetic systems working in all conditions is one of our main strategic goals.

Telzas was founded in 1976. Throughout the 40 years we have gathered an enormous experience, which allows us to confidently look into the future. Research on new solutions, alongside with continuous quality improvement of the offered products and services are considered as fundamental values. Thanks to that Telzas is one of the most technologically advanced companies in the power supply industry. Specially organized departments are constantly developing the intelligent solutions for backup power supply, monitoring and telemetry.

Our solutions are dedicated mainly for the following industries:

Internet services and data transmission

Highest dedication

We make every necessary effort in order to achieve the goals set by our Partners. This approach makes us a reliable manufacturer and advisor. Our success implicates the Customer satisfaction in area of security, reliability and functionality of the offered systems.

Designing, manufacturing and system supervision are based on the needs of Customers. The individual approach allows us to prepare the most complex systems, with the key aspects for Customers as priority.

The Telzas brand is made by competent, dedicated and ambitious employees. They are our largest capital. Investing in employees, information management systems and technical equipment for the workplace are considered to be crucial.
We care about the development of our employees by financing postgraduate studies and trainings. Additionally, language courses adjusted to our activities are organized. The constant growth enables to create jobs. The company also hosts internship programs for students.

The quality management policy is strictly related to environmental protection. The pollution and waste management are key factors considered while designing our products. The company organizes trainings for employees in order to improve quality and maintain the high environmental awareness.


The company’s success is built on a solid financial foundation. Creditreform, an international business information agency, carried out an creditworthiness investigation of our company. The overall assessment of the financial condition of Telzas, in particular the ability to settle liabilities, was rated as very good. Our company has won the prestigious credibility certificate published on


Since March 14, 2016, we have had a license from the Minister of Internal Affairs and Administration to conduct business activities in the field of:

  • trade in explosives, without the right to store them,
  • trade in certain types of weapons and ammunition,
  • trade in certain products for military or police purposes.

The license is valid for a period of 50 years.

Integrated management system

At TELZAS, we apply recognized management standards. Meeting the standards is confirmed by ISO certificates issued by independent certification bodies. The management system has two certificates of compliance with international standards. ISO 9001 and ISO 14001 certificates were issued by United Registrar of Systems Polska Sp. z o. o.

ETC Group

The roots of the ETC Group date back to 1986, when Mr. Alishah Ranjbaryan opened the ETC Trading Corporation KG in Hamburg. Based on the capital, talents and passions of friends from Poland and Germany in 1991. ETC sp. z o. o. was established. The Group’s activity is focused on two business areas:

  • Chemistry for the glass and ceramics industry,
  • Uninterrupted power supply systems for the telecommunications, energy and industry sectors

Since 1991, many important events have taken place in the life of our organization. They allowed for the constant development of the ETC Group and the increasing satisfaction of our clients with cooperation with us.

These breakthrough moments include:



Establishment of ETC Group Hamburg


Signing of the ETC agreement – ​​AccumulatorenFabrikSonnenschein GmbH, today GNB


Establishment of ETC sp. z o. o., the first contract for Polish telecommunications


Beginning of cooperation with Degussa AG


Representative office of Cerdec AG, today FERRO AG


Representative office of Cerdec AG, today FERRO AG


First deliveries for the GSM network in Poland


First projects for Polish power plants


Contract for the supply of over 1,000 ONU power cabinets for Siemens


Establishment of ETC plus SA


Framework deliveries of power supply systems for TPSA


ISO 9001:2000


Telzas joins the ETC Group


Start of the ZAWISZA project for the energy sector


Opening of ETC Power in Kabul, renewable energy projects


First deliveries of ZAWISZA systems for Nigeria


The first deliveries of gyms to Central Asian countries


Opening of the ETC Green Power representative office in Dubai

Research & Development

We offer the design & manufacture of power supply and supervisory systems adjusted to individual needs of the clients. Over 40 years of experience and individual approach to each client enable us to produce solutions that meet the requirements of our customers. The typical development process in our company includes:

  • identification of customer’s needs,
  • analysis of feasibility,
  • design,
  • prototype development,
  • testing,
  • preparation of documentation,
  • manufacturing,
  • training,
  • implementation,
  • technical support.

The power supply and supervisory systems are manufactured with use of the state-of-the-art technologies that meet customers’ requirements in the environment of PN-EN ISO 9001:2001 standards. We provide technical and logistical support adjusted to the individual needs of our customers.

ISO certificates

We provide and implement solutions at the highest level in the field of uninterrupted power supply systems, renewable energy and energy efficiency, as well as remote device monitoring and infrastructure management software.

The guiding principle by which the company operates is based on the quality of products and services and building trust and lasting relationships with customers and contractors. Customer satisfaction, reliability and safety of the offered solutions are the main criteria we use in our policies and procedures.

Achieving these goals would not be possible without appropriate management systems, which is why at TELZAS we apply the best international standards. Meeting international standards is confirmed by ISO certificates issued by independent certification bodies. Management system at Telzas Sp. z o. o. has two certificates of compliance with international standards. The ISO 9001 and ISO 14001 certificates were issued by United Registrar of Systems Polska Sp. z o. o.

TELZAS periodically confirms with audits the compliance of the obtained standards:

The validity of ISO certificates and the degree of preparation to meet their requirements are regularly audited through external cyclical audits carried out by authorized ISO units.


Concession to conduct business activities in the field of protection of persons and property services provided in the form of technical security.

On September 27, 2021 it was granted to TELZAS Sp. z o. o. license to conduct business activities in the field of personal and property protection services provided in the form of technical security.

TELZAS Code of Ethics

TELZAS means not only the highest quality of products, but above all the highest quality of the company’s employees. Consistent values, attitudes and rules of conduct are the company’s calling card. In order to set the canon of these values ​​and the principles with which we want to be identified, the TELZAS Code of Ethics has been developed.

EU projects

Telzas Sp. z o. o. is a beneficiary of projects co-financed by the European Union. We invite you to read the information regarding requests for proposals as part of ongoing projects.