Sylwester Lemanski is a seasoned sales leader and client advisor with over 20 years of experience spanning luxury automotive, adaptive mobility, and renewable energy. Known for his integrity, customer-centric focus, and ability to inspire high-performing teams, he has led operations for iconic brands like Porsche, Lamborghini, and BMW before transitioning to the solar industry. As an Energy Consultant at Ion Solar Pros, Sylwester now leverages his consultative expertise and strategic mindset to guide clients toward sustainable, cost-effective energy solutions—continuing his lifelong mission to deliver value, build trust, and drive meaningful impact across every industry he touches.

Roger DePoy is a trusted leader in energy efficiency consulting with a career spanning over two decades across the utility, finance, and real estate development sectors. Known for his integrity, strategic mindset, and ability to translate complex energy systems into practical solutions, he has consistently delivered impactful results for clients ranging from utilities to private businesses. Through DePoy Energy LLC, he continues to guide organizations toward sustainable energy practices that drive cost savings, regulatory compliance, and long-term resilience.

Leadership in renewable energy, particularly within the solar sector, is a dynamic journey that blends innovation, strategic vision, and adaptability. As the global demand for clean energy surges, businesses must navigate regulatory complexities, secure robust financing, and address supply chain disruptions while staying at the forefront of technological advancements. Embracing solar energy not only enhances sustainability but also reduces reliance on carbon-based fuels, creating a competitive edge and aligning with eco-conscious consumer values. By investing in cutting-edge technology, fostering strategic partnerships, and integrating sustainability into core operations, companies can drive long-term growth, meet ambitious energy goals, and solidify their position as pioneers in the renewable energy landscape.

I’m excited to share my journey in the field of environmental sustainability, where I’ve spent the past 25+ years leading programs that reduce environmental impact, enhance efficiency, and strengthen corporate responsibility. From pioneering renewable energy projects at Southern California Gas Company to founding Helmufs, my focus has always been on creating meaningful and lasting change. As we face growing global environmental challenges, I remain deeply committed to supporting actions and decisions that help ensure a sustainable planet for future generations. I look forward to continuing this important work and making a positive impact.

I’m excited to share a glimpse into my professional journey and achievements with you. My career in renewable energy has been shaped by a strong academic foundation, including a Master’s Degree in Renewable Energy from Loughborough University and a thesis on thermochemical energy storage completed at Oregon State University. My work spans various domains, including energy efficiency, solar energy technology, and project management. I’ve recently earned certifications in Battery Based Photovoltaic Systems and Energy Efficiency in Buildings, underscoring my commitment to advancing sustainable energy solutions. Through my role as a consultant, I’ve focused on designing solar PV systems and integrating battery storage, driven by my passion for environmental sustainability and innovation. As an active member of the European Renewable Energy Research Centre (EUREC) Alumni Network, I strive to contribute to the renewable energy community and foster collaborative growth. I invite you to explore my full biography to learn more about my journey and ongoing efforts to make a positive impact on our planet.