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The team behind STG consists of a core group of MIT-trained engineers joined by a group of dedicated students, industry consultants and advisors with experience in developing world markets. A team of talented engineers in Lesotho is continuing work on STG's first field prototypes.

Matt Orosz, PhD - President, Director (USA)

Matt holds his doctorate in Civil and Environmental Engineering (MIT '12), an M.Sc. in Technology and Policy (MIT '06), an M.Eng. in Civil and Environmental Engineering (MIT '03), and a B.A. in Environmental Science (Dartmouth '00). Matt is the Lead Engineer and Project Coordinator for all of STG's work. He led the implementation of the World Bank sponsored work in Lesotho and continues to provide inspiration and leadership to the group. Matt is currently serving his tenure as an Echoing Green Fellow (2012-14).

Amy Mueller, PhD - Treasurer, Director (USA)

Amy holds a doctorate in Environmental Chemistry (MIT '12), and an M.Eng. (MIT '03) & S.B. (MIT '02) in Computer Science and Electrical Engineering. Amy works primarily on the electrical and electronic control systems, contributing to work in Lesotho since 2005 and to the development of the Eckerd field site system. In addition to her role as Treasurer, Amy also acts as the Technology Liaison for STG.

Elizabeth Wayman – Secretary, Director (USA, 2006-2013)

Libby holds an M.Sc. in Mechanical Engineering (MIT '06) and an S.B. in Civil and Environmental Engineering (MIT '04). She has extensive experience in thermodynamics and renewable energy systems. Libby's technology focus has been thermodynamic modeling and construction of the heat engine; she has also contributed strongly to the vision and direction of the organization in a management/advisory capacity. Libby has recently stepped down from the Board of Directors to pursue an opportunity with the U.S. Department of Energy - we wish her the best of luck with this endeavor!

Bryan Urban - Director (USA)

Bryan holds two degrees in Mechanical Engineering (S.M. MIT '07, B.S. Cornell '04) and has extensive expertise in heat transfer modeling, business development, and entrepreneurship. Bryan designed and led STG's first market, customer, and government study for Lesotho in 2007 and continues to provide insight into project, partner and market development. In his role as Director, Bryan also analyzes weather data and uses computer models to help select regions most suitable for STG's technologies.

Sylvain Quoilin, PhD - Technology Development and Field Evaluation (Belgium)

Sylvain holds a doctorate from the University of Liege, and joined STG in 2008 as a research scientist specializing on design and modeling of small scale ORC technology. Sylvain's role on STG's team is ORC system improvements, modeling, and advanced technology development, along with contributing to work testing pilot systems deployed in Lesotho. Read more about Sylvain here.

Lengeta Mabea - Senior Engineer (Lesotho)

Mr. Mabea is the Senior Renewable Energy Engineer at the Appropriate Technology Services (Government of Lesotho), and since 2007 has been the acting liaison between STG International and this key partner organization. In addition to helping oversee STG-sponsored work while the USA-based team is not in Lesotho, Mr. Mabea brings an important perspective to the project which balances novel engineering work against the practical constraints of working in Lesotho. Mr. Mabea holds bachelors degrees in Mechanical Engineering ('01, University of Natal, South Africa) and Physics & Maths ('95, National University of Lesotho).

Makoanyane Khakanyo - Technician (Lesotho)

Makoanyane is the key individual in charge of system maintenance at Pilot Clinic in Lesotho. He has worked with the STG-USA team on the construction of the solar systems since November 2006, concurrently working toward a B.Tech. in Mechanical Engineering at the Central University of Technology (Bloemfontein, South Africa). Before working with STG, Makoanyane studied mechanical systems and Fitting and Machining at Lerotholi Polytechnic (Lesotho).

Motlatsi Sekhesa - Engineer (Lesotho, retired)

Motlatsi was the lead engineer and key entrepreneur promoting STG-type solar energy work in Lesotho from 2006-2008; Motlatsi has since gone on to work as an engineer for WASA (the government Water and Sewerage Authority) and to start his own general purpose engineering (machining) company in Lesotho. Motlatsi has a Diploma in Mechanical Engineering from the Cape Peninsula University of Technology ('07) and a Certificate in Fitting and Machining from Lerotholi Polytechnic ('98).

Tumelo Makhetha - Engineer (Lesotho, retired)

Tumelo was a key contributer in the design and construction of the mechanical trough systems and led a team of technicians during site preparation and installation at Pilot Health Clinic. Tumelo currently holds an engineering management position with Philips at their factory in Lesotho which manufactures energy-efficient light bulbs. Tumelo has a B.Tech. from the University of Johannesburg ('07), and he recently earned his Bachelor's Degree ('09) at the Tshwane University Of Technology in Pretoria, South Africa.