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What is the concept of energy payback time for solar panels?
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Energy payback time (EPBT) is the time it takes for a solar panel to generate the amount of energy used to produce it. This includes the energy required for manufacturing, transporting, and installing the panels. Most modern solar panels have an EPBT of 1 to 4 years, depending on the technology and location. After this period, the panels produce net positive energy, contributing to a reduction in overall energy consumption and emissions. Understanding EPBT helps assess the sustainability and efficiency of solar technologies.