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Pleione Energy S.A is an International Joint Venture between the Greek company ADAMANT COMPOSITES LTD and the German company OMNIDEA-RTG Gmbh.
The company was established in 2015 and is located in Athens, Greece. It is part of the New Science & Technology Park of Attica “Lefkippos” of the National Center for Scientific Research (NCSR) "Demokritos".
Pleione Energy’s goal is to develop, design and produce cost-effective products for a more sustainable energy economy, focusing on the use of nanomaterials such as graphene.


To grow our position as an innovative company that develops and provides state-of-the-art technological applications for the energy and space sector.

Our Goal is to establish a rapid and cost-effective process of industrialization and commercialization of energy applications. Our approach for achieving our goal is to identify time-tested, leading-edge technologies and synthesize them into industrial applications and products, maximizing their exploitation potential.


Our Values

We are a values-driven organization:

  • We promote new approaches for energy storage in ways that can benefit all people and our planet. The environment and sustainability are key elements of our business.
  • We strive for excellence and quality. We believe there is always a better way.
  • We deliver on our promises.

Our values reflect the mentality of our shareholders and define who we are, what we do and what we care about.


Adamant Composites Ltd. is a dynamic SME active in the field of Advanced Materials and Structures with emphasis on nanotechnology and composite materials. It was founded in 2012 by a team of highly qualified Mechanical and Aeronautics Engineers with an accumulated experience of over 30 years in the field of composite materials engineering and with international exposure within the framework of European and ESA activities.

The company’s vision is to create sustainable development in Greece and Europe via the establishment of an industrial hub for designing and manufacturing high added-value products and services.

The ultimate goal is to design and deliver space-approved hardware "made in Greece", which can be part of the space industry supply chain for future satellites or launchers. Currently, the company leads the technological development of deployable truss structures for future space telescopes for the European Space Agency (ESA).

Adamant Composites presently develops novel materials based on nanotechnology in collaboration, with European Space Agency (ESA), and its core competencies revolve around the following Products and Services:

  • FXply™ Prepreg Technology
  • Built-to-Print Composites Manufacturing
  • Advanced Product Engineering

Adamant Composites Ltd. premises are located in the city of Patras, Greece, in the vicinity of the University of Patras.


Omnidea-RTG GmbH is a German SME, created in 2014 to acquire the Space division of RTG Aero-Hydraulic. The acquisition was completed in April of the same year, allowing the continuation of the work of RTG-Aero in Space, whose heritage dates back to 1973.

Located in the Bremen area, Omnidea-RTG supplies satellite chemical propulsion components as well as related services such as complete propulsion sub-system manufacture, assembly, integration and testing (MAIT).

Our shared pursuit of growth and development as well as the complementary functions engenders a spirit of cooperation, creating the ideal conditions for synergy.

What we do


Our motto reflects our drive to make a difference, to develop novel solutions for energy applications, and to rethink the energy challenge!

The worldwide demand for energy is continuously growing, and it is expected to have risen by approximately 50% by 2030, according to the International Energy Agency.

A lot of effort has been made to meet the ever increasing energy demand of modern societies through the use of conventional fossil fuels technology and renewables.

From production to end usage, there exists a whole intricate added-value chain of energy conversion, distribution and storage. Lack of efficiency and optimization in this chain remains a key issue with respect to achieving a more sustainable future.

We at Pleione Energy believe that innovation can help bridge this gap. Our advanced materials and nanotechnology expertise, along with our extensive research experience in the energy and space sector, empowers us to achieve technological breakthroughs.

Pleione Energy’s objective is the integration of enabling technologies into technical innovations for the development of energy applications, for the energy and space sector. More specifically, Pleione Energy focuses on the development of innovative and cost-effective applications and systems for energy conversion, distribution and storage through the use of enabling technologies that can benefit both the industry and society at large.


Our strategic principles

Drive Innovation Forward:

Develop top-quality energy applications that meet customers’ needs and have commercial potential

Maximize the value of innovation

Seek partners to maximize value

Strive for quality in all we do

Quality is crucial and needs to be ingrained across all functions

Who we are

Innovation is our passion

We aspire to achieve further excellence by combining advanced material knowledge translating into innovative energy-efficiency applications.

We leverage the management’s extensive expertise in the space and energy sector to convert opportunities to profitability.

We identify proven, leading-edge technologies and synthesize them into industrial applications and products, maximizing their exploitation potential.

We foster collaboration and team spirit throughout the organization, in both internal and external engagements.

As engineers, we promote continuous improvement in all aspects of our activity and nurture a learning culture throughout the company.

Bottom line, we believe in excellence. We maintain the highest standards in everything we do, and we focus on results.

At Pleione Energy, we know that high quality products provide the basis; however, it is expertise, professionalism, outstanding service, and a sense of responsibility that guarantee economic success. And that creates added value.



Patriarchou Grigoriou & Neapoleos str.

Athens - Greece

T: +30 210 6564501



Feldstraße 2, 28816

Stuhr, Germany


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