It is worthwhile thinking about the below during the design:
•	Lay of the land – e.g. hills on north or eastern side
•	Any pre-existing heritage overlays in the area.
•	Shade - The layout of roof vents, chimneys, dormers, etc. should be considered if they will cause shading on your solar panels during the day. Also the location of existing trees.
•	Roof Design - Make sure that your roof can bear the additional weight of a solar panel system. A north-facing roof that is angled at between 25 and 45 degrees (depending on latitude) is the most ideal for solar.
•	Designated roof mounting points for your PV array. Integrating the mounting points can save time and money and reduce the likelihood of damage to the roof during solar installation.
•	Pre-wiring and pre-laying your solar panels - you have the option of pre-installing the wiring for your solar power system during the build, which can save you money when installing your solar system