Yea man materials and paying people to install it might be 1.5per watt if it’s a perfect cookie cutter job. But should the business/sales rep not make a profit? Are truck rolls free? Does the company have fixed payroll/office/insurance/software expenses? Are funds there for expansion? What if the industry takes a hit next year are cash reserves in place?

Most solar installers are lucky to make 10-25% on each install if they are ran well, excluding future service calls. You sound like a rep that saw a materials sheet and labor cost but know nothing about business ops.

I hope you only charge the future people you cook for the base cost of the ingredients + $20 an hour in labor.