The best discount code for SanTan Solar is 'BOGOHALF'. This code offers customers a 50% discount. Another notable code is 'RAY', which provides a 10% discount. There are also several other codes that offer a 5% discount on certain products or categories, such as 'WILDRVLIFE5', 'UPREV', 'DIYSOLARFUN5', 'AMBITIONSTRIKES5', and 'ACCESSORIES5'. Please note that the availability and discount rates of these codes may vary and it's recommended to check the SanTan Solar website for the most current offers.