Manfredi Caltagirone, 46, passed away on June 18, 2025, in Madrid, Spain. Born on April 21, 1979, in Rome, Italy, Manfredi lived a life marked by passion, innovation, and an unwavering commitment to environmental progress.

A dedicated leader in the global fight against climate change, Manfredi joined the United Nations Environment Programme (UNEP) in 2012. He brought with him not only a deep understanding of environmental policy—shaped by his earlier roles at the Italian Ministry of Environment and the United Nations Foundation—but also an infectious zest for life that inspired all who worked with him. At UNEP, Manfredi quickly became a driving force within what was then known as the Energy and Climate Branch (now the Mitigation Branch).

His early contributions included helping to establish the Climate Technology Centre and Network (CTCN), a key mechanism for technology transfer under the UN Framework Convention on Climate Change. But it was through his vision and leadership of the International Methane Emissions Observatory (IMEO) that Manfredi left an indelible mark. Under his guidance, IMEO flourished into a pioneering initiative that brought cutting-edge science and data transparency to the forefront of methane emissions tracking in the oil and gas sector. One of IMEO’s most significant achievements during his tenure was the integration of its Oil and Gas Methane Partnership (OGMP 2.0) measurement framework into the European Union’s first-ever regulation on methane emissions reduction in the energy sector (EU/2024/1787), which came into force on August 4, 2024. This milestone stands as a testament to Manfredi’s ability to bridge science and policy through innovative partnerships with industry stakeholders.

Manfredi was known not only for his professional accomplishments but also for his dynamic personality. He was an innovator—a disruptive force who challenged norms because he believed deeply in urgent action against climate change. He “push, push, pushed” himself and those around him not out of ambition alone but from a profound sense of responsibility toward our planet.

Beyond his work, Manfredi was cherished as a friend and colleague. His generosity knew no bounds; he gave freely of his time and energy to support others both personally and professionally. Whether passionately defending Italian coffee or cheering for his favorite football club, he brought warmth and humor into every room he entered. His laughter—often directed at himself—was contagious, and his presence uplifting.

Above all else, Manfredi was a devoted husband and father. He is survived by his beloved wife Pilar and their two children. Their loss is immeasurable, and our hearts go out to them during this profoundly difficult time. Manfredi Caltagirone leaves behind a legacy of impact, integrity, and inspiration. May his memory bring comfort to those who knew him and strength to those who continue the work he so passionately championed.