Alex & his gang arrived on time on the appointed day, he was friendly & cheerful & explained how he was to go about installing a 6.66kw solar system. Despite my house having a multi level roof, clerestory window, cathedral ceilings & a chimney to deal with, not a straight forward install, Alex & the gang got stuck into the work straight away & despite being a man down on the day still managed to complete the install that day, what's more they cleaned up the mess afterwards. Alex then ran me through the shutdown & start up procedure as well as installing the Goodwe inverter app on my phone for me. I have no hesitation whatsoever of recommending Sulex to anyone who wants a professional neat job completed in a timely manner. Well done to all at Sulex!