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8 Tips for Buying Used or Discount Solar Panel for Beginners

Solar panel prices has drop considerable. The prices today is as low as 0.3$ per Watt. Still for a large system, a PV panel cost can make up most of the cost of the PV system. Instead of buying retail-priced solar panels, a great way to get more bang for your buck is to invest in used or discount solar panels instead.

There are other alternatives. If you have a limited budget, these tips are for you.

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88% derate for lost due to module heating. (12% loss)95% for inverter efficiency (5% loss)97% for DC and AC wiring inefficiency (3% loss)95% for module production tolerance and mismatch (5% loss)95% for module power loss due to dust and dirt (5% loss)90% shade factor to account for array shading before 8 a.m and after 4 p.m (10% loss)

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Questions to Answer before Installing a PV System at Home | Infinite Energy

How do weather affects a solar power system? What mounting options applies for your solar project? What questions would you ask about your solar contractor?

Before investing solar power. Consider this questions first.