Our Leadership Team


Derek Kremser
Chief Executive Officer

Dedicated to propelling the renewable energy landscape forward, Derek Kremser is the CEO and Founder of ClearSky Energy, an industry-leading solar company driven by innovation, sustainability, and impactful growth.

With a distinguished career in energy & renewables spanning over a decade, Derek has consistently demonstrated an unwavering commitment to advancing clean energy solutions. As the CEO of ClearSky Energy, Derek is entrusted with steering the company's strategic vision toward a greener, cleaner future.

Prior to his leadership role at ClearSky Energy, Derek honed his expertise in various leadership positions within the energy sector. Most recently, he served as the Director of Renewables Development at Diode Ventures, developing a 1GW+ portfolio of solar and storage assets across ERCOT, PJM, and MISO. As a force for positive change, Derek has set an innovative tone for ClearSky’s strategic direction.

Reach out to Derek: derek@clearskyenergy.com


Matt Waronicki
Chief Operating Officer

Matt Waronicki serves as the Chief Operating Officer of ClearSky Energy, where he leverages unparalleled expertise and strategic insight to drive operational excellence.

With over a decade of dynamic career experience, Matt has held pivotal roles across diverse industries, including renewable energies, oil & gas, equities markets, manufacturing, and engineering. This versatile background underscores his proficiency and adaptability in various operational domains. As an engineer and business professional, Matt embodies a continuous pursuit of professional enrichment and operational efficiency.

At ClearSky Energy, Matt plays a pivotal role in advancing the company's position as an innovator in renewable energy. His resolute dedication to operational excellence and his fervent commitment to fostering positive change are woven into the fabric of ClearSky Energy's operations, mission, and values.

Reach out to Matt: matt@clearskyenergy.com


Mike Duerr
Chief Financial Officer

An experienced investor and financial strategist, Mike Duerr serves as the Chief Financial Officer at ClearSky Energy.

Drawing upon his career spanning over 15 years, Mike demonstrates a profound commitment to shaping sustainable financial strategies that drive ClearSky Energy's growth trajectory. Before joining ClearSky Energy, Mike gained extensive experience in venture capital, real estate, and financial markets.

As CFO, Mike plays an instrumental role in propelling ClearSky Energy's mission to the forefront of industry advancements. His dedication to financial excellence and his passion for renewable energy resonates powerfully as ClearSky Energy continues to redefine the energy landscape. His unwavering dedication to financial excellence and genuine passion for renewable energy contribute to ClearSky Energy's sound financial strategy and healthy risk management.

Reach out to Mike: mike@clearskyenergy.com


Esme Carpenter
Marketing Director

Esme Carpenter is the Marketing Director at ClearSky Energy.

With a comprehensive background in strategic marketing and a passion for sustainable solutions, Esme is instrumental in driving ClearSky Energy's mission to revolutionize the renewable energy landscape. With a strong history of brand marketing for mission-driven organizations, Esme excelled in diverse roles at renowned firms like Coca-Cola Company, The Atlanta Braves, SABRE Securities, and more.

As the Marketing Director, Esme orchestrates forward-thinking strategies that align with the ambitious yet sustainable growth goals we hold at ClearSky, spearheading efforts to raise awareness, engage stakeholders, and showcase the transformative potential of solar energy. Esme’s dedication to sustainable practices and innovative communication strategies drives ClearSky Energy's presence in an evolving market.

Contact: esme@clearskyenergy.com