Company

years of experience

Stream HYDROPOWER

The company was established in 2010 in Prague by Karel Kraml, a freelance expert in hydroelectric power, in order to develop small hydropower plants in the Czech Republic. After a few years the core business expanded into conducting expert analysis on hydropower plants all over the world. The company’s teams quickly formed several departments, providing complex solutions to hydroelectric power stations, and dealing with systems designed to output up to hundreds of MW.

Karel Kraml, company director, chief of conceptual solutions, and hydraulics

Karel Kraml, company director, chief of conceptual solutions, and hydraulics

Karel is an independent expert in hydropower with more than 15 years of experience.

As chief designer or project manager he has responsible for the completion of over 30 hydroelectric power plants in operation worldwide. As the managing director of Stream sro he focuses on hydropower development, realization & funding in Asia, South America and the European Union.

After graduating from CTU in Prague in 2003 where he studied Branch hydropower, his career started as a member of a team reconstructing 7 hydropower plants in Macedonia, under a contract with the Macedonian government. From 2006 - 2008 he worked as the project manager of a hydropower development in Vietnam and since 2009 has been team leader on a number of hydropower design and construction projects in southern America, Africa and across Europe. Notably, he served as chief designer on the LAC hydropower plant in Liberia, serving a rubber tree plantation on an island with a population of fifteen thousand. In 2016 he became the managing director of Stream s.r.o., a company that acts worldwide, focusing on hydropower design, management, construction, and funding. One example of a completed project is the new 15 MW Corani 5 hydropower project in Bolivia, where Stream was responsible for both designing the plant and overseeing its construction.   

Jiří Ženíšek

Jiri graduated from Brno University of Technology in 2006, in the department of civil engineering. Between 2006 – 2016 he worked as designer, project manager and construction director for numerous industry, energy and housing projects worldwide. Since 2016 he has been working as an independent specialist for STREAM s.r.o. within its Czech and Latin American hydropower projects.

Jiří Ženíšek
Petr Sládeček

Petr Sládeček

Petr is a construction designer and topography specialist with more than 20 years of experience.

In his career he (and his team) have completed many social projects such as hospitals, universities, hotels, administration complexes, and the reconstruction of the Czech embassy building in Paris. For the last few years he has also been working on hydropower plant projects as part of Stream sro.

Břetislav Heczko, chief architect and civil engineer

Bretislav graduated from the faculty of architecture at Czech Technical University in Prague in 2007. He has worked as an architect and visualisation specialist on many industrial and public construction projects, and since 2011 he has participated in hydropower projects in Africa, Italy, and, of course, on Stream sro projects.

Some of his more interesting projects include producing construction animations for the LAC project in Liberia, and design of the Svijany hydropower plant in the Czech Republic, which was nominated for a number of architecture awards.

Břetislav Heczko, chief architect and civil engineer
Jan Sedlický, chief of hydrotechnical construction, pipelines, and landscape engineering

Jan Sedlický, chief of hydrotechnical construction, pipelines, and landscape engineering

After graduating from Czech Technical University in Prague in 2009, Jan spent four years as a civil engineer on a team responsible for designing systems for both drinking water and waste water disposal for urban areas and towns in the Czech Republic. In 2014, he started to work as a civil engineer for a company designing, constructing and financing hydroelectric power plants. Here he was responsible for preparing a project partly related to hydrology, hydraulic and civil engineering. Working as a head designer, he has assisted in the completion of several small hydropower plants that have already been put into operation in Wales and Scotland. Jan has been working for Stream since 2017.

Jiří Trejbal

Jiří is completely responsible for construction site management.

His 20 year career in civil construction has involved the construction of residential buildings, industrial complexes and, in recent years, hydro power construction & reconstruction in the Czech Republic. He also has a small private company with experienced workers managing civil & water construction projects. 

Jiří Trejbal
Jiří Příhoda

Jiří Příhoda

Chief structural engineer

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