In December 2025, Nature Energy has published an article authored by leaders from the Australian Centre for Advanced Photovoltaics (ACAP) and around 70 international solar PV experts. The article has outlined a global framework for scaling photovoltaic deployment in a multi-terawatt era and reported outcomes from the Fourth Terawatt Workshop (TW4), held in June 2024 at Pacific Grove, California, United States. It reviewed how decades of learning in cost, efficiency and reliability shaped current solar PV deployment and reported that global capacity reached 2 TW by the end of 2024, including 550 GW installed in 2024 alone. It also outlined expectations for annual installations of 600–700 GW in 2025 and cited projections exceeding 75 TW by 2050, requiring manufacturing capacity to expand to around 3 TW per year. The article identified priorities including tandem technologies, module reliability, sustainability metrics, and harmonised testing standards. It stated that these findings reflected TW4 discussions and the need for coordinated global approaches to manage scale, technology risk and long-term system performance. For detailed analysis, see the Nature Energy article “Historical and future learning for the new era of multi-terawatt photovoltaics”, published in December 2025.