LONGi Green Energy Technology announced a world record silicon solar cell efficiency of 28.13%, verified by Germany’s ISFH, alongside back contact modules showing under 1.1% degradation in TÜV SÜD tests.
LONGi Green Energy Technology, a leading solar technology firm, has achieved a breakthrough with its silicon solar cell reaching 28.13% efficiency, marking a global record independently confirmed by Germany’s Institute for Solar Energy Research Hamelin (ISFH) as reported on Power Info Today as of May 2026. Additionally, the company’s back contact modules demonstrated exceptional reliability, with degradation below 1.1% in extended TÜV SÜD tests exceeding IEC standards, according to Solar Quarter on 05/13/2026.
As of: 14.05.2026
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LONGi Green Energy Technology focuses on the full solar photovoltaic value chain, from silicon ingots and wafers to high-efficiency cells and modules. The company has positioned itself as a technology leader by investing heavily in R&D for advanced cell architectures like hybrid interdigitated back contact (HIBC) and back contact (BC) designs. This vertically integrated model allows LONGi to control quality and costs across production stages, serving utility-scale, commercial, and residential markets worldwide. US investors track LONGi for its role in the global solar supply chain, with modules increasingly deployed in American projects amid domestic manufacturing ramps.
Silicon wafers remain LONGi’s largest revenue contributor, benefiting from the company’s mono-crystalline expertise. Solar cells and modules follow, with recent innovations driving premium pricing. The latest 28.13% efficiency record for silicon cells underscores LONGi’s edge in n-type technologies, potentially boosting module sales in high-end applications. Back contact modules, showing 0.83% degradation after 400 thermal cycles in TÜV SÜD tests published on 05/13/2026, enhance reliability appeal for long-term projects. For US portfolios, LONGi’s products support the Inflation Reduction Act’s solar expansion.
The solar sector faces oversupply pressures, with Chinese firms like LONGi reporting losses over ten quarters amid low prices, per sector analysis. Yet, LONGi differentiates through efficiency leadership—its HIBC tech set two world records—and green manufacturing, sourcing 47.5% renewable power for factories. This positions LONGi favorably against peers like Tongwei in Europe’s carbon-regulated markets and the US, where supply chain resilience matters. The firm’s back contact push anticipates next-gen demand beyond PERC limits.
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LONGi’s technology influences US solar deployment, with its high-efficiency modules powering projects under federal incentives. As American firms like First Solar scale, LONGi provides cost-competitive imports, though tariffs add scrutiny. Exposure to LONGi via ADRs or ETFs offers US investors indirect play on global solar growth, projected to accelerate with data center demand.
LONGi Green Energy Technology continues advancing solar efficiency with records like 28.13% cells and robust BC modules, amid industry challenges. These developments highlight its innovation focus, relevant for global clean energy transitions including US markets. Investors monitor execution amid competitive pressures.
Disclaimer: This article does not constitute investment advice. Stocks are volatile financial instruments.

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