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Most manufactures create "standard efficiency" solar panels, which convert around 15% of the energy that hits them from the sun into electricity, while SunPower
by plorkyeran 14y ago
Most manufactures create "standard efficiency" solar panels, which convert around 15% of the energy that hits them from the sun into electricity, while SunPower's convert over 20%. They also cost significantly more, so in practice SP's modules are usually the most space-efficient, but not always the most cost efficient.