No, expect about a 10% power loss. If you can wait a year, the panels will each come with built-in micro-inverters which will give you about a 98% efficiency. Also be aware that panel wattage is specified under optimum conditions (perfect alignment, brightest sunshine, shiniest sales pitch) and usually you will put out less than stated power.
__________________
An obstacle is something you see when you take your eyes off the goal.