About SFCO

Our mission is to minimize the damage of climate change by breaking down the barriers to solar energy access.

Through innovative design and a focus on accessibility we are overcoming the cost and complexity barriers currently limiting global viral deployment of solar thermal technologies in humanitarian, commercial and industrial contexts.

Founded by Eva and Eerik Wissenz, the company develops and spreads the solar fire technology through commercial and humanitarian channels.

Solar Fire Concentration OY (ltd.) is a social company based in Tampere, Finland, business ID 2474214-8.


Eerik Wissenz, Finland

Executive Director & CEO

Co-founder and Chairman of Solar Fire Concentration Oy. Finn and Canadian, Eerik grew up in Canada and studied mathematics at Ottawa and Carleton University. Quickly took a hiatus to dedicate himself to developing solar thermal technologies. Eerik developed solar concentrators in Mexico, Cuba, India and EU. Eerik has the vision of a fair solar thermal economy and he’s in charge of the strategy and the development of the company.

Eva Wissenz, Finland

Chairperson of the Board

Co-founder and Managing Director of Solar Fire Concentration Oy. Eva has a Masters degree in Literature. She studied and taught at La Sorbonne University, Paris, France. She has 15 years experience in French media, publishing and cultural events. She also did a lot of volunteer work and has developed solar concentrators in India and the EU. She brings her enthusiasm and strong experience in communication, logistics and team management.

Urs Riggenbach, Switzerland

Chief Operating Officer

Urs has an international Baccalaureate from the United World College, India and BA in Human Ecology from the College of Atlantic, US. As chief operating officer, Urs follows closely all projects, financials and administration processes and supports the team in management and planning. As full-stack web developer he manages the company’s IT infrastructure, security policy and software development, always striving to optimize workflows. Urs has developed solar concentrators in Nepal and EU. Always willing to challenge himself, he can’t rest until the world is a better place for all.

Arnaud Crétot, France

Chief Technology Officer

Arnaud has a Masters in Thermal and Energy Engineering from PolyTech Nantes, France. After his studies, he has visited over 50 energy projects in the EU and Asia. He has 3 years of experience in solar thermal system design and auditing. He joined the company in 2014 and he brings passion and rigor to any technical developments.

Lorin Symington, Canada

Project Manager, Prototyping & Fieldwork

Lorin has extensive international experience designing and developing small scale solar concentrators and adapting them to regional needs (Mexico, Cuba, Mali, Haiti, Canada and Finland). His technological and fabricating experience is primarily geared to developing world contexts and he is passionate about helping everyone around the world to reach their potential.

Will Cleaver, United Kingdom

Chief Design Officer

William has a degree in maths and languages from the University of Hull, UK. He has worked in Design (CAD), Construction and Fabrication in the US & UK, project planning, logistics and management of industrial sites. William has developed solar concentrators in two different states in India, in Switzerland and Finland.

Trân Ngô, Vietnam

Junior Project Manager Vietnam

Tran is doing her Bachelor’s degree in Energy & Environmental Engineering at Tampere University of Applied Sciences (TAMK) in Finland. With enthusiasm and willingness to learn, Tran is joining our team as intern to support our fieldwork in ongoing projects.

Jared Omondi, Kenya

Kenya Representative

Jared is based in Kenya and has supported GoSol since our first project there in 2016. Jared has over 16 years of experience in fabrication in metal- and woodworking, as well as construction. He builds and installs anything from wood furniture to metal frames, supports and gates. As artisan fabricator he is well connected in the local Jua Kali fabrication industry.

Lauri Nurro, Finland

Institutional and Grant Funding

Lauri has a Masters in Industrial Marketing and International Business from Lappeenranta University of Technology, Finland, with a minor in Environmental Engineering. He has held managerial positions in Sales, Projects, and Customer Service at different Finnish companies, also related to energy sector. Lauri’s attitude combines the traditional Finnish hard-working spirit with a passion for exploring new opportunities. Lauri brings to our team his Marketing and Sales experience combined with a thorough technical understanding.


David Brohall, Sweden


David holds a Masters in Innovation and Entrepreneurship as well as Automation and Mechatronics. He is a serial entrepreneur and investor in the energy and engineering sector. Having founded and managed a handful of companies, David brings experience both on the managerial as well as the technical level.

Jussi Laitinen, Finland


Jussi has a Master’s degree in Journalism from University of Jyväskylä in Finland, with minors in ecology and development research. He has written two books about energy and climate change, and worked as communications consultant with several major Finnish companies and government agencies. Jussi has won several environmental and journalism awards.


Solar Fire Concentration Oy
Business ID: 2474214-8
Hämeenpuisto 35 D
33200 Tampere - Finland

+358 (0) 458 591 457, or:
+358 (0) 458 591 454