Buying any used product requires careful questioning, but used solar panels are especially tricky. It is important to establish first what that benefits of solar energy are. The value of any used panel depends on its performance relative to its price. A solar panel whose output falls significantly under its official rating might actually be a good deal if the price per watt is still competitive. There are a few guidelines that greatly increase your chances of getting an excellent value.
Stick to Buying Offline
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