Solar Panel Installation: Flat Setup vs Angle Setup

'Flat installation' vs 'Angle Installation (with add+ structural cost)'.
Flat installation for this case to utilize the large roof area since they can spend and install more panels. In addition, Nevada is the driest state in the United States, angle installation for water flow is not relevant.

 

(Reference: https://www.teslarati.com/tesla-gigafactory-nevada-solar-panels-expansion/)

 

(Sample Image: Angle Installation)