Rooftop Solar completed the installation of 3,3KW Solar Power today in Hout Bay. Due to space constraint we used 14 x 230Watt SunPower Modules. The system will produce 6700KW/Hours of electricity per annum, reducing the clients electricity account by over 70% and saving 7 tons of CO/2 per year.
Rooftop Solar Blog 
I see you used Mono panels for this install, and Poly for other installs.
Any real benefit other than size/ weight for Cape Town to choose Mono over Poly?
No real benefit, between the mono and poly, only use the higher efficiency Sun Power Modules when space constraints are a issue. Have just completed a site with mono and poly running side by side, so far cant see any difference in performance.