My name is Eva Wissenz. I’m a French-Italian social and impact entrepreneur, an environmentalist, and a writer based in Tampere, Finland.

I am Founder and Managing director of Solar Fire Concentration Oy, Founder of Sepia Agency and Sustainable Tampere & Pirkanmaa.

I have always combined entrepreneurship spirit with creativity. Being a social and impact entrepreneur and a writer is my way to have a positive impact to support others to adapt to climate change.

In Europe, I contribute to more awareness and education to climate change. In the Global South, I empower women and youth with solar (ovens and trainings to sustainable jobs).

I’m passionate about transitioning towards a more sustainable society.

With Solar Fire Concentration ltd, during these last 10 years I have managed international partnerships, handled communications, supervised mission’s logistics in developing countries (India, Kenya, Tanzania, Uganda, Haiti, South Africa), developed education and managed multi-cultural team. My work is at the intersection of renewable energy, education and agro-ecology sectors.

Writing is indispensable to me to stay creative and aligned. My books (in French) are presented here.

Cooperation in Finland

2021 :
- Participant in Ekothon 1 & 2, and of Pirkanmaa Murrosagentti / Change Agents from Pirkanmaa Region, a network of sustainable people initiated by the Regional Council of Pirkanmaa.
- Creation of a series of SisuTalks with Pirkanmaa Murrosagentti from the region.
- Creation of 10 Eco-Impact Events for Tampere Kaupunkki to raise more awareness about climate change among citizens.
- Workshop for Bloom Tampere association.
- Organizing "Shaking Traditions in Finland " with 6 other Finnish impact entrepreneurs. The event was part of the Skoll Forum organized by Jeff Skoll Foundation (USA) and the Skoll Center at Saïd Business School (UK).
- Creation of the Sustainability and Impact Club at TAMK (Tampere Applied Sciences University).


- Speaker at "Empowering Peace: The role of civil society in peace building and conflict transformation", held in Tampere University, 1-4 June, organized by the European Peace Research Association, Tapri and Tamk.
- Masterclass for Kabakoo Academy (Mali-France).
- Ambitious Africa, online with Tomi Höök & Martin Pouabidjie.
- InnoFrugal festival for social and impact entrepreneurs, Helsinki.
- 3rd International Forum on CSR, Sustainability and Circular Economy “Sustainable Business and Education –Now!”, TAMK.
- Think Africa with Fingo and Plan International Finland.
- Speaker invited by Johto ry and MBA faculty at Tampere Leadership Symposium (Johtajuussymposium).
- "Sustainability and Marketing: embody your values", Learning Lab, TAMK.
- Speaker invited at the Responsible Business Research seminar organized by Tampere University and Respman (Responsible Management Research Group) (article: "Ethics at the core of the business model").
- Speaker at Stream Festival in Tampere.
- Speaker at Waves Festival of Aalto University of Helsinki about impact entrepreneurship.
- Speaker at Lahti Lappeenranta University (Finland) at a conference about "Sustainable Grands Challenges".
- Invited delegate by Autodesk Foundation at Skoll Forum for impact and social entrepreneurs in Oxford (blog).
- Contribution to the AlterCoop training :"Cooperation in action - take inspiration from committed people".
- Speaker about solar energy for vulnerable populations at Marjolaine Fair for Sustainable Lifestyles, Paris.


My own podcast in French about alternatives and literature on SoundCloud.
- Ma Vie Ailleurs (ADFE) on StereoChic radio.
- We Encourage podcast / Aino: Survivor story (listen here)
- Sustainability podcast with LearningLab / TAMK: Empowering people for social development (listen here).
- Solar Fire Women - a conversation - Podcast of Solar Fire Concentration who finally reached gender equality! Link here.
- Business as Unusual - Podcast here.
- Tribecast - Podcast of Tribe Tampere about the difficulty for SME’s to transition to sustainability and the Sustainability and Impact training created at Tampere University.


All my solo and cooperative books (in French) are here.
- Co-author of "Devenez pionniers du nouveau monde", Jouvence publishing, 2021.
- Co-author of "Osons la fraternité - Manifeste pour un monde ouvert", Yves Michel publishing, 2016.

Mr Juha Kaario (COO and Chairman of the Board at Newelo Oy) was my mentor in 2019-2020 to launch Sepia Agency as part of the City of Tampere and Pirkamaan Yrityskummiyhdistys Ry program.
In 2019, I’ve been a mentor myself for Hidden Gems in Tampere and during the Startup Weekend Sustainability.

2012-2022: Solar Fire Concentration ltd

Since 2012, I have been Executive Director, CEO, Managing Director and Chairperson of the Board at Solar Fire Concentration Oy, an impact and social engineering company I co-founded.

Our mission is to eradicate energy poverty with solar thermal energy with Lytefire tech (watch our showroom) and to spread a new business model for solar entrepreneurs.

I have concentrated my effort on the development of international projects with our branch GoSol, working closely with multiple partners: Autodesk Foundation (USA), Silicon Valley Community Foundation (USA), NGO Plan International (Finland and Uganda), the energy company Wärtsilä (Finland), Finnpartnership (Finland), Carbon Cycle (Philippines), NGO World Vision (Finland and Kenya), Global Resource Alliance NGO (Tanzania), Deloitte Foundation (France), Tampere University of Applied Sciences (Finland), Rexel Foundation (France), Finnvera (Finland) and the University of Berkeley (USA).

Our team has also developed trainings for young solar entrepreneurs.

Under the brand Lytefire, the company is now developing a wide range of services for solar entrepreneurs globally.

1990-2018: Communication, Tourism and Publishing activities

Before becoming an entrepreneur in Finland, I worked as freelance and corporate in the art and tourism industry in Paris for many years. I was also a free-lance journalist and blogger.

From 2012 to 2018, I created and managed Seepia online publishing house. The focus was on novels meant to increase the awareness about climate change and essays about the environment.

  • Chief Editor and Editor in Tourism:
    > I have been Chief Publisher/Editor at the Paris Convention and Visitors Bureau during 2 years. This role consisted of overseeing various collections of publications, including city guides, brochures and maps in 9 languages, as well as internal reports and annual reports. I also oversaw the conversion of publications from new material to recycled and was responsible for the editorial section of the website, www.parisinfo.com.
    > Chief Editor of 6 Paris city guides for Zurban newspaper.
    > Comptoirs du Monde travel agency (Paris): I wrote new guides about Uganda and Finland and updated contents of their website related to New Zealand, Brazil, Senegal, Namibia, Kenya, Ireland and Scotland, Greece.
    > Michelin: during 3 years, I researched and wrote eight new guides, notably in Cuba, in Greece and in Italy.
    > Nomade Aventure: I edited the new version of this travel agency website.
    > At Hachette Group I edited and proofread 32 travel guides and participated in the creation of 4 new titles.
    > With Bouquins, I worked on the Lichine’s wine encyclopedie and for "Elle" I worked with Parisian food critic Mr Leo Fournaux.

  • Editor in Art:
    J. Kugel Gallery is regarded as one of the most prestigious international antique galleries. During 10 years, I had the privilege of working directly with Alexis Kugel who entrusted me with the editorial catalogs of six exhibitions.

  • Organizing events for Modern Art scene:
    In 2001-2002, I organized conferences at the Modern Art Museum of Centre Pompidou in Paris for the Revues Parlées de Marianne Alphant. I also edited the catalog for the retrospective of designer Fabrice Praeger.