Getting the right solar panels in Lima can be a pain. As a retired consultant I mounted a small business here (http://deltavolt.pe/
) that includes solar installations and I face the problem continuously.
Paruro is definitively a place to check, but: most stuff is of low quality, many panels sold are the ones that didn't pass certifications. They even offer 'brand new Siemens panels' (Siemens sold its solar business around 2002). If you are well informed and are able to spot the tiny differences between good and bad you might find good deals, otherwise it is quite a risk. Btw, be aware of the solar batteries sold there, most are fake! A rather good place is OMP (http://www.ompsac.com/
), but availability varies quite a lot - prices are about twice the ones in the US. Enforcing guarantees is almost impossible, contrary to statements.
In case you need some specific panels, I can offer you to get them for you. Take the price in the US, add about 35% (shipping, taxes and the numerous tiny tariffs at the customs) plus something for our efforts and we can get whatever you want in about 6 weeks.
you might want to check our calculator: http://deltavolt.pe/calcsolar