Most of today`s solar cells are based on silicon with extremely high purity, which is one of the major reasons why solar power is expensive. IBM has successfully created a new prototype of a solar cell that uses natural and abundant materials – copper, zinc and tin – to convert photons into electricity.
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It didn`t take longer than half an hour from opening before Colorado-based Xcel Energy had to close their Solar Rewards Community program for new applications.
One of the biggest setbacks for people looking to invest in solar is a lack of a suitable place to put the solar panels. In the last few years this has been changing: community-owned solar enables households that otherwise wouldn’t be eligible for solar panels in the past to invest in, and make use of, this technology.