On Airstreams, due to their rounded roofs, we often use different sized feet to attach the solar panels to the roof. Some clients like to have the panels conform to the curvature of their roof, others prefer a more level appearance. We are happy to install them either way, or even come up with custom mount sets when necessary. This client asked us to use taller feet on the outside, and shorter feet on the inside, resulting in a flatter look. At the end of the day it’s only about personal preference as the performance difference is generally negligible.
This customer came to us with a price ceiling and asked that we give them the most power possible for their budget goal. Upon inspecting the trailer, we found that their batteries were completely dead. We replaced them with a pair of low cost Interstate Flooded batteries and added two 100W panels to the roof with a 25A SunRunner Signature MPPT core. The system can easily be expanded with the addition of two more 100W panels when the customer is ready.