Get
to know us
At Freen, we are committed to making clean energy accessible worldwide. Based in Estonia, our focused team is pioneering advances in small wind turbines and energy storage solutions to enable true energy independence for businesses, households, and communities.
Inspired by Georges Darrieus’ original invention of Vertical-Axis Wind Turbines and driven by more than a decade of continuous R&D, we have refined vertical turbine technology that delivers industry-leading efficiency and cost-effectiveness. Over the years, our portfolio has expanded to include both vertical and horizontal wind turbines as well as advanced energy storage systems. Since 2025, we have been offering European-made LiFePO₄ and sodium-ion batteries, ensuring that energy independence is not only possible but reliable and safe. Together, these solutions form a complete ecosystem that empowers our customers to secure their energy future.
Key milestones
1926
George Darrieus patents the vertical-axis wind turbine.
1983
Commercial use of large vertical wind turbines begins.
2015
ANEM's founder introduces a new disruptive concept.
2016
Patent received, prototyping of the FREEN large-size wind turbine begins.
2018
Freen is established in Estonia, finalizing the R&D phase of the vertical wind turbine.
2019
Start of the factory construction and initiation of investment rounds.
2021
The company secures
EUR 36.4 million in funding, purchases and installs manufacturing equipment.
2022
Official launch of VAWT production lines and entry into the international market.
2025
Expansion of the Freen product portfolio with HAWT and energy storages.
We provide vertical and horizontal wind turbines together with LiFePO₄ and sodium-ion batteries, creating a complete ecosystem that unites small wind generation with reliable storage.
Our facility
Our production processes are certified.
Would you like to join our team? Look at the opportunities to grow together!
Our mission
Our company’s mission is to make clean energy affordable and accessible to consumers in every corner of the world, including the most remote locations without a regular or reliable power supply. To that end, our R&D team works tirelessly to improve our current products designs and come up with new features, materials, and components to stay ahead of the curve and follow the chosen path of continuous improvement as a small wind and energy storage manufacturer.
We are committed to excellence in every aspect of our business, from the design and production of cutting-edge wind turbines and energy storages to exceptional customer service and strong partnerships worldwide. With our unwavering dedication to sustainability, we strive to empower individuals and businesses to harness the power of wind energy, reducing their carbon footprint and contributing to a greener future. Through continuous research, development, and collaboration, we are making clean energy accessible and efficient for consumers and partners across the globe.
Andrey Khimenkov, CEO
Project funding
Our achievements
As a proud member of the WindEurope association and recipient of numerous grants from the European Union’s green initiatives, we are committed to expanding our market exposure through partnerships, media, and participation in relevant industrial events, such as the WindEurope Annual Event 2024 in Bilbao, Spain.
Being a member of the Ukrainian Wind Energy Association (UWEA), we are excited to be a part of the community, dedicated to advancing wind energy and sustainability in Ukraine and beyond. The invaluable access to industry insights, networking opportunities, and collaborative initiatives will help shape the future of renewable energy.
As a member of the World Wind Energy Association (WWEA), we actively promote wind energy adoption worldwide, advocate for sustainable energy policies, and support infrastructure development to expand access to reliable, small-scale wind solutions. Our mission aligns with WWEA’s vision of accelerating the transition to clean, renewable power. Through this collaboration, we strengthen global energy security and drive innovation in sustainable power generation.
General Advisor
The IOPARA company is a General Advisor of Freen OÜ in the field of wind turbine research and calculations (including performance studies, characteristics improvement, and wind field certification). The company is represented by Ion Paraschivoiu, its Founder and CEO who has a PhD in energy science and has a recognized status of professor at Polytechnique Montréal School, Canada.
IOPARA.CA
Patent Information
Wind generators of Freen OÜ use a highly efficient design of a wind turbine wing — the Darrieus type. Freen OÜ made a licensing agreement with the A.N.E.M. (Alternative Energy and Manufacturing Ltd) company on the use of the wind generator wing property rights (the “Horizontal Axis Troposkein Tensioned Blade Fluid Turbine” patent registered in the USA, No. USOO9441615B1).
ANEM.COM
Strategic Partner
The Ida-Viru County Industrial Areas Development Foundation state-owned company (IVIA.ee) is a Strategic Partner of Freen OÜ in cooperation with the Estonian Government for the implementation of plans to build a wind generator manufacturing plant and create wind fields.
IVIA.EE
Sunsa appreciates Freen for their innovative technological solutions in creating hybrid renewable energy parks utilizing small wind generators. The advanced technologies offered by Freen give a competitive edge, and partnering with Freen creates fresh opportunities to contribute to the development of a sustainable future.
Gregory Levkovets, CEO at Sunsa OÜ
