In 2025, researchers found potential solutions to deficits in transparent, thin-film, and perovskite solar panels. They also discovered ways to tackle – and utilise – the effects of heat on solar installations. We've chosen our nine favourite advances to highlight and explain.
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Mehdi Sadeghi, CEO of Iran Transfo Industrial Group, unveiled the first domestically produced all-in-one transformer system, which converts solar energy into electrical energy for the country's power grid, and described it as a significant step toward the realization of clean.
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At present, the world's most efficient solar panels are manufactured using HJT and IBC N-type monocrystalline silicon cells and achieve efficiency levels above 23.
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In 2025, the global average price of a turnkey battery energy storage system (BESS) is US$117/kWh, according to the Energy Storage Systems Cost Survey 2025 from BloombergNEF (BNEF), published last week (10 December). That was a 31% decline from 2024 numbers.
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