# Photovoltaics : PV panel

Width - width of PV panel in mm.Height - height of PV panel in mm
Nominal PV panel power [Wp] - nominal power of a single panel in WpDistance between panels - distance between panels in mm (vertically and horizontally).
Mounting orientation - vertical or horizontal, defines the default mounting orientation of the PV panelBottom margin - distance from eaves to first row of panels
Upper margin** - distance from the ridge to the last row of panels
left margin** - distance of PV panels from the left edge of the slope
Right margin** - distance from the PV panels to the right edge of the roof