Puerto Rico Suddenly Emerges As A Perovskite Solar Cell Powerhouse

Puerto Rico has rapidly emerged as a significant hub for the production of advanced perovskite solar cells, thanks to a new partnership between the US startup Solx and California-based Caelux. The collaboration aims to manufacture tandem perovskite solar modules at scale on the island, leveraging Puerto Rico’s status as a US territory to navigate tariffs and benefit from domestic manufacturing incentives. This strategic move is part of a broader effort to produce high-efficiency solar panels that combine perovskite and silicon technologies, with an ambitious target of 3 gigawatts of production over the next five years. Perovskite solar cells have attracted considerable attention since their discovery in 2009 due to their potential for low-cost, high-efficiency energy conversion. However, their durability issues have limited standalone use, prompting innovators to pair perovskite layers with traditional silicon cells in tandem configurations. This approach enhances overall efficiency, with Solx’s Aurora™ modules incorporating Caelux’s “energy amplifying glass” technology to achieve conversion rates around 28%. Production has already commenced in Puerto Rico, with initial batches destined for a US developer and plans to scale up manufacturing rapidly. The choice of Puerto Rico as a manufacturing base is driven by practical and regulatory advantages. As a US territory, Puerto Rico allows manufacturers like Solx to avoid tariffs and benefit from “Made-in-the-USA” policies, which are increasingly important for domestic energy security. Additionally, the island’s frequent natural disasters and fragile power infrastructure underscore the urgency of developing resilient, renewable energy solutions locally. Puerto Rican authorities have highlighted the need to reduce reliance on imported fossil fuels and improve energy stability, making solar technology a critical component of the island’s energy future. The partnership also signals a broader resurgence in American solar manufacturing amid fluctuating federal energy policies. Despite setbacks during the Trump administration, companies like Solx remain committed to reshoring production and advancing domestic clean energy capabilities. Solx CEO James Holmes emphasised that the commercialisation of hybrid tandem solar modules marks a pivotal moment for US energy manufacturing, while Caelux’s CEO Scott Graybeal described the venture as transformative for meeting growing energy demands. The involvement of Suniva, a US silicon solar cell producer, further strengthens the fully American supply chain underpinning the Aurora modules. Looking ahead, the Solx-Caelux alliance could play a crucial role in scaling up next-generation solar technology production within the United States, supporting both energy security and sustainability goals. Their success in Puerto Rico may set a precedent for other manufacturers considering similar strategies to combine advanced materials with favourable regulatory environments. As the solar industry continues to innovate, this partnership exemplifies how regional advantages and technological breakthroughs can converge to drive the future of renewable energy.