Surprising discovery made on most new solar panels

Most solar panel manufacturers guarantee that they will retain 90% of their advertised energy output in the first 10 years of use. A recent five-year study by Sandia Labs made a surprising discovery.

Sandia National Laboratories, part of the US Department of Energy, found that 13 of the 23 different systems tested have an effective lifetime of more than 30 years. Specifically, these systems produce 80% of the electricity after three decades that they generated when new.

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The study analysed 834 photovoltaic panels, installed in three different climates and from seven manufacturers.

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Reliability of these technologies increased despite the fact that PV panel prices have accelerated to drop by up to 85% since 2010, Sandia Labs reports. Affordable costs have boosted investment in the field. In the world’s largest economy, the US, enough PV has been installed this year to power 22 million homes, according to EcoWatch.

There are three popular types of solar panels: monocrystalline, polycrystalline and thin-film. The former have higher efficiency, the latter are more affordable, and the latter are very durable. Recently, hybrid systems have also emerged, combining photovoltaics with wind turbines.

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Another new technology uses solar panels to produce hydrogen.

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