Global development of tandem solar technology

Global efforts to advance tandem solar cell technology are intensifying as manufacturers in South Korea and the United States seek to increase energy efficiency and industrial competitiveness.

In South Korea, the government is working to strengthen the domestic industrial ecosystem, targeting tandem solar cell efficiency of over 35%. This initiative involves collaboration between the Korea Institute of Energy Research and major industry players to advance technologies ranging from high-efficiency silicon cells to next-generation perovskite tandem cells.

Concurrently, US manufacturers are nearing a commercial rollout of tandem technology, which utilizes a stacked cell architecture to increase energy yields by approximately 25% compared to standard models. While companies have completed technical testing and obtained certifications, the industry faces challenges regarding long-term panel stability, high costs, and political hurdles related to federal permits. These advancements are viewed as a means to challenge China’s current dominance in the global solar market.