Tandem PV has opened a commercial demonstration plant in Fremont, California, marking a transition for perovskite silicon technology from laboratory development to repeatable production at scale.
The 464.5 m² facility has a nominal annual capacity of approximately 40 MW and produces tandem solar panels approximately 60 times larger than the company’s initial research-scale devices.
The company has reported internal test results of 29.7% efficiency and aims to provide a higher efficiency alternative to standard silicon modules as land and system balance costs still represent the majority of utility-scale project costs.
The production expansion comes at a crucial time for the domestic solar supply chain, as rising electricity demand, fueled by AI workloads and data center growth, places renewed pressure on capacity. Project developers are increasingly looking for hardware innovations that can maximize energy production from a fixed footprint.
The Fremont site is designed to validate the production of large format products and accelerate market acceptance by demonstrating that the advanced materials can be reliably manufactured in the United States. While the industry has resolved long-standing questions about the stability of perovskites, the move toward commercial-scale production reflects a shift toward hardware that can provide lower energy costs through increased efficiency.
The company said it plans to deliver the first modules for customer validation trials later this year, with the aim of reaching high-volume production by 2028.
Federal and state policy continues to play a role in bringing back advanced solar energy production, with the company receiving support from the U.S. Department of Energy and the California Energy Commission. As global energy markets remain volatile, the push for domestic leadership in next-generation solar technology remains a strategy to strengthen supply chain resilience. The facility represents a broader industry effort to move beyond increasing silicon gains and deliver the kind of breakthrough engineering needed to meet evolving system reliability needs.
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