For a PV system there are numerous number of PV panel and inverter brands available in the country. Some relatively new brands offer lower pricing. So, to ensure reliability and long-term warranty services it is always a rule of thumb to choose the premium PV panels and inverter brands. Premium, in the case of panels, signifies tier-1 brands. You will find a lot of complicated definition in internet, when it comes to tier-1 panels. Simply put, tier rankings are based on the advanced manufacturing processes, R&D and production quantity. This correlates to panel performance and durability. Therefore tier-1 panels signifies the “best in the business”. And some popular tier-1 panels include Jinko, Trina and Q-Cell panels.