Most of the cooling for glass panels is from underneath while most of the cooling for flexible panels is through the top. I understand that having no cooling under flexible panels will reduce actual performance by about 9%. The bonnet may increase that if there is poor insulation on the under side, but on the other side, there is excellent airflow while driving, so the net result may not be as poor as anticipated. Also, it would be charging while driving and while stationary, although while driving is of little importance as there is an alternator that can provide a huge amount more power than any single solar panel ever will.
At $665 that is $8.30/watt. That is a very expensive panel. Top quality conventional flexible panels are closer to $2/watt. Maybe put a larger hinged panel over the rear window?
This one is a top quality 200W glass panel ($250). On our new build it will be a 430W light weight panel.
The linear actuators is a luxury you don't need. Just a couple of small gas struts would be almost 'over the top'.
Cheers, Peter
-- Edited by Peter_n_Margaret on Friday 22nd of March 2024 10:44:28 AM