Australia's solar leadership is at risk, and the consequences could be dire. Despite being a global leader in rooftop solar uptake and distributed PV penetration, the country's participation in two key international programs is uncertain. These programs, the International Energy Agency's Photovoltaic Power Systems Program (IEA PVPS) and Solar Heating and Cooling Program (IEA SHC), have been instrumental in Australia's solar success. They provide access to international research networks, collaborative projects, standards development, and early insights into emerging technologies and market trends. This engagement has strengthened Australia's ability to contribute to international best practices and maintain its global influence. However, the future of these programs is uncertain due to a lack of long-term funding. The consequences of withdrawal would be significant, as Australia risks losing access to important international collaborations, reducing its influence on technical standards and energy strategies, and weakening its position within global clean energy discussions. This is a critical moment for Australia's solar industry, which has tens of billions of dollars invested in solar and associated energy infrastructure. Maintaining international engagement is crucial for industry capability, innovation, investment confidence, and technology development. Australia's participation in these programs is particularly important as it hosts the International Solar World Congress in 2027 and engages in international clean energy leadership through COP30. The country's engagement with Horizon Europe further emphasizes the importance of international collaboration. Without continued participation, Australia risks losing its seat at the global solar table and its reputation as a renewable energy superpower. The time to act is now, as the world looks to countries like Australia for practical renewable energy experience and leadership.