I agree with you (only buy it if you really, really need it … the smaller the panel, the lesser the use time = worse). But do you have recent information to back this up? I know this was true a long time ago (that building solar panels often needed more energy than they would ever “harvest” in their lifetime) but is this still true? I’ve never found new information regarding this and in the meantime a lot of new solar panel manufacturing techniques (with new materials) were invented in the meantime. Does anyone here know? I assume this will be still true for the “smaller” panels, but I was not able to find the information.
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