3E Energy Oy
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​​3E Energy Oy is located in Tuusula, Finland 

Mari Tuomaala 
​+358 40 5877256 
firstname.lastname(at)3e-energy.fi 

​Y-tunnus: 2904446-1
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About the company


​​3E Energy Ltd was founded in April 2018 to promote measures to combat climate change with the help of science-based information. This is achieved by working with three key-enabling groups (3E): with research organisations creating knowledge, with financiers and investors investing in future, and with companies implementing new technologies. An increasing number of merited specialists work today as entrepreneurs. They form networks. The advantage of networks is that projects can bring together a wide range of experts. That’s why we also work in networks. In addition, it is possible to utilize our extensive academic network in our projects. This is useful when a project requires demanding theoretical skills.
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Network of entrepreneurs


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Mari Tuomaala, DSc (Tech), 3E Energy Oy

The company's founder and owner of 3E, Mari Tuomaala, has worked in various roles in the energy sector for about 20 years. Through her, the company has an extensive network of contacts in energy companies and in science. Since May 18, 2020 she is also working part-time in LUT University, School of Energy Systems with P2G and P2X technologies.
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Sari Siitonen, DSc (Tech), Clonet Oy

3E and Clonet work together to reduce carbon footprint. In our projects, we are promote new technologies, processes and circular economy solutions, calculate emission reduction potentials and promote industrial energy efficiency.
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Aleksei Novitsky, MSc (Econ), SCF Oy
​3E and SCF work together in strategic business development and transformation projects. The focus is in energy, industrial and infrastructure investments. Together we study for example new technologies and the new business opportunities they offer.
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Rami Saajoranta, MSc (Tech), 5th Grade Solutions Oy

3E and 5th help companies to align the R&D&I activity and goals of strategy. In this work we e.g. categorise projects based on their inherent time scales (research versus business development). This work is a process through our special mini-workshop series.
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Riitta Haapanen, MSC (Tech), Provas Oy

3E and Provas work together to implement new energy futures and circular energy solutions into strategy. In practice, this leads to development programs and projects. To accomplish this, we organise and lead workshops together with our customers and relevant substance experts​​.
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