https://it-news.uk/tags/clean-energy/ Recent content in Clean-Energy on IT News Hugo en-us Wed, 15 Jul 2026 00:00:00 +0800 https://it-news.uk/posts/longi-355-percent-tandem-solar-cell-record/ Wed, 15 Jul 2026 00:00:00 +0800 https://it-news.uk/posts/longi-355-percent-tandem-solar-cell-record/ <p>Solar energy has a math problem. The best commercial silicon panels top out around 22-24% efficiency, and single-junction cells have a theoretical ceiling of 33.7%. To go higher, you need a different approach — stacking two materials that each capture a different slice of the solar spectrum. LONGi Green Energy, the world&rsquo;s largest solar manufacturer, just showed how far that approach can go.</p> <p>On July 14, at the company&rsquo;s Photovoltaic &amp; Storage Innovation Technology Conference in China, LONGi announced that its crystalline silicon-perovskite tandem solar cell reached 35.5% conversion efficiency, certified by the European Solar Test Installation (ESTI). That&rsquo;s a new world record for the technology class.</p>