A large, unshaded roof is best for solar. If your roof is smaller, then your options are more limited, but many businesses are still making this work. Shading needs careful analysis, as this will reduce electricity generation. If it’s only occurring in the early morning and late afternoon, the impact may be relatively small.
Structural engineering considerations should be investigated early, as solar panels do add to the roof weight, which can be a significant issue in locations with high seismic loads.
Solar panels can be attached to most roof types. You should discuss with installers what fixing type and installation method they propose to use, and how this will affect the warranty of your roof. Also consider the expected life of your roofing material and any maintenance requirements on your roof.
Alternatives to installing on an existing roof are to establish a new roof over a car parking area, or to have the panels ground mounted if there is land space available around your business. Both of these options will add costs.
