GSE installed 7 SolarWorld 285 watt Mono in Mill finish, to accompany 8 existing SolarWorld 280 watt Mono in Mill finish.  The existing panels were mounted to shingle roof and the added panels were mounted on a tilted rack installed on a flat roof.  GSE was able to mix 280 & 285 watt panels because this system utilizes micro-inverters, which converts the solar power to usable 240V AC power at the module level.  Panels were directly wired to the breaker panel.