The pitch of a roof is autodetected in the design if using Nearmaps however the side of the roof can be flattened to adjust the azimuth.

The pitch of a roof refers to the incline or slope of the roof surface, typically expressed as an angle in degrees. It is the vertical rise divided by the horizontal span. The pitch of a roof is an important factor in solar PV design for several reasons:

1. Sun Exposure: The pitch of the roof affects how much sunlight the solar panels receive. Ideally, solar panels should be installed on a roof with a pitch that allows for optimal sun exposure throughout the day. In regions closer to the equator, a roof with a lower pitch might be more suitable, while in higher latitudes, a steeper pitch may be necessary to capture sunlight effectively.

2. Energy Production: The angle of incidence of sunlight on solar panels influences their energy production. The pitch of the roof is adjusted to optimize the angle, maximizing the amount of sunlight the panels can convert into electricity. This is especially important during different seasons when the sun's position in the sky varies.

3. Self-Cleaning: The pitch of the roof can also affect the self-cleaning capability of solar panels. Rainwater can help wash away dust and debris that might accumulate on the panels, contributing to better long-term performance. The pitch influences how effectively rainwater runs off the panels.

4. Aesthetic Considerations: In some cases, the pitch of the roof is a design consideration for aesthetic purposes. Solar panels need to be integrated into the overall design of the building, and the roof pitch can impact the visual appearance of the installation.

When designing a solar PV system, engineers and installers evaluate the roof pitch along with other factors like orientation, shading, and local climate to determine the most effective and efficient configuration for capturing solar energy. Optimizing these parameters contributes to the overall performance and reliability of the solar PV system.