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Our team

S2m’s team have participated in PV and CSP technologies with several of the Spanish industry leaders, working on projects totalling 1,000 MW.

 Ralf Wiesenberg. Founder and Managing Director.
Ph.D. in Energy Systems Engineering, Berlin University. Has worked on numerous projects for multinational corporations as energy specialist. Has also worked on development of the world s largest solar thermal project of the last 20 years. He is an accredited Financial Risk Manager (FRM®).
 rwiesenberg@s2msolutions.com


 Enrique Serrano. Founder and Director of Operations.
Technical Engineer. Master in Operational Management and Industrial Quality. Has worked in the petrochemical and energy industry, and as a technical consultant, helped to raise and design 4.5bn in structured financing for solar projects.
 eserrano@s2msolutions.com


 Stefan Unnasch. US Area Manager.
B.Sc. in Mechanical Engineering from the University of California at Berkeley. Specialist in thermodynamic processes and gas dynamics, has published over 70 international papers. In the 1980s he joined ACUREX, a pioneer in solar thermal systems, where he remained for 15 years.
 sunnasch@s2msolutions.com


 Marcos Porras. Solar thermal power plant modeler and engineer for conceptual design.
Marcos has degrees in Industrial Engineering from both Carlos III University in Madrid and from ICAI (the Engineering school of the Universidad Pontificia Comillas). He also studied at Vilnius Gediminas Technical University in Lithuania. He is in charge of solar thermal power plant modelling and simulation (solar field, thermal storage, piping, heat exchanger, boilers and power block).
 mporras@s2msolutions.com


 Jaime Gonzalez. Meteorological modeler and process engineer.
Jaime has a Bachelor´s Degree in Industrial Engineering and a Master´s Degree in Automation and Artificial Intelligence, both from Carlos III University in Madrid. He was part of the bilingual study group at the university, and has done internships in various European study centres. Jaime develops applications in C/C++, Fortran, Matlab and other programming languages. He is also in charge of mathematical meteorological models.
 jgonzalez@s2msolutions.com


 Prasad Gangireddy. Business Developer.
Prasad has a Bachelor´s Degree in Mechanical Engineering from VTU of Belgaum in India. He worked as an engineer for Fluent ANSYS India Ltd. where he was responsible for developing new software functionality and new versions of this fluid simulation software which is the global industry benchmark. He was also involved in process design at Sigma Solid Strips. He is currently a member of the working group on new energy storage applications and works as business developer.
 pgangireddy@s2msolutions.com


 Hector Barroso. Industrial Engineer.
Hector has a Bachelor Degree in Industrial Engineering from Carlos III University, where he carried out a specialization course in power technologies. He collaborated with the Thermal and Fluids Engineering department of Carlos III University. Hector controls several programming languages, giving support to our modeling department. He is also a part of the new energy storage applications working group.
 hbarroso@s2msolutions.com