Thursday, July 9, 2026 I 6:00pm CEST I 10:00am CST I Language: Spanish
Hot water accounts for a significant share of energy consumption in hotels, hospitals, sports facilities, restaurants, universities, and other commercial and service-sector establishments. In this webinar, you will discover how solar thermal technologies can transform that consumption into an opportunity to reduce operating costs, lower fuel use, and advance sustainability goals. David Contreras will share applications, benefits, and real-world experiences that demonstrate the potential of solar hot water solutions to strengthen the competitiveness of organizations in Mexico
David Contreras
Treasurer, FECIME
David Contreras holds a degree in Renewable Energy Engineering from the Universidad Tecnológica de la Zona Metropolitana de Guadalajara (UTZMG), graduating with honors. He has more than 10 years of experience in renewable energy, energy efficiency, and particularly in solar thermal systems for heat generation. He served as President of the 27th Board of Directors of the College of Mechanical and Electrical Engineers of the State of Jalisco (CIMEJ), where he promoted a forward-looking vision focused on innovation, gender equity, and professional diversification.
He is the founder and Chief Operating Officer of Distrito Energía, a pioneering company in the collaborative development of energy projects and creator of Mexico’s first Solar Thermal Clinic. He currently serves as Treasurer of FECIME, Mexico Ambassador for the international Heat Changers initiative, and is a member of several advisory boards, including those of UTZMG, CONALEP Jalisco, and FIDE. He previously worked at CONUEE as Head of Innovation and managed the solar thermal division at Sunnergy.
David has organized major outreach and professional development initiatives, including CIMEJ Solar Week 2021 and energy efficiency workshops in collaboration with governmental and academic institutions. In recognition of his leadership and commitment to the sustainable development of Mexico’s energy sector, he was named Chartered Engineer of the Year 2021.
Marisol Oropeza,
Business and Marketing Strategist
Marisol Oropeza, a dual Mexican and German national based in Berlin, is a Business and Marketing Strategist with her own consulting brand “matters” since 2016. She is a leading figure in the solar industry and recognized as an exceptional advocate for solar thermal. With a career spanning more than 20 years holding leadership positions in the public sector in Mexico, as well as the private and non-profit sectors in Germany, she positions herself as a highly qualified professional with a creative mindset.
She is founder of the Heat Changers community and an advisor to highly recognized companies in the solar industry. She has cultivated a vast network of contacts in Germany, Europe and Latin America. Her influential international collaborations span initiatives to accelerate the energy transition and promote solar technology. She collaborates with the Solar Heating Initiative, the Global Solar Certification Network and Intersolar Mexico. She was responsible for the International Affairs Secretariat of the Mexican National Solar Energy Association (ANES) from 2020 to 2024.
Additionally, she stands out for her extensive knowledge of the sector and dynamic presence as a speaker and moderator. She is listed in the speaker directory of the Solar Heating and Cooling Program of the International Energy Agency (IEA SHC).
Marisol's academic background includes a Bachelor's degree with honors in Business Administration from UNAM, a Master's degree in European Studies from Hochschule Bremen, and additional studies in Strategic Marketing, Leadership and Sustainable Development.