by Bryan Welch
The fastest-growing energy technology in the world is solar, but it’s very unlike passive solar. Photovoltaic solar collectors capture solar energy in a supremely adaptable and portable form. Photovoltaic panels and films, made mostly of silicon, convert sunlight into electricity by allowing sunlight to stimulate electrons to a higher state of energy, then converting that energy into electrical current. Basically, the photons in sunlight, hitting a collector, create free electrons that can be siphoned off as electrical current.
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