There are pros and cons for both, roof, and ground mounted PV modules.
ROOF MOUNT PROS:
- Depending on the distance to shade creating objects it may be advantageous to mount PV modules (Solar panels) on the roof of a building as you are naturally gaining height for better sun exposure.
- In most cases the roof structure is strong enough to manage the additional weight and snow load.
ROOF MOUNT CONS:
- Mounting PV modules on the roof using string inverters or off grid installations requires a Rapid Shut down. Also, the installation of a rodent guard around the entire perimeter of the array is required. This solution can be quite costly and adds a fair bit of labour.
- If the harvested energy is required in the winter as well, snow removal may represent a challenge.
GROUND MOUNT PROS:
- Easy installation.
- Easy snow removal.
- A ground mounted array can be installed at a distance from the home or cottage.
GROUND MOUNT CONS:
- Ground mounted arrays take up room that may be not available.
- For some people appearance can be an issue.
- In most cases underground cabling is required.