Optimal Solar Angle?
I'm looking to buy a new 100w panel to mount to a fence with a pole. I can get a standard 100w mono facial panel and angle it directly up to get maximum efficiency when the sun is overhead. I could also get a bifacial panel and mount it vertically (facing east to west) so that the sun hits one side in the morning, and then the other in the afternoon but not as much when it is directly overhead. The bifacial panel is about $30 more. I've never used a bifacial panel. Which one would theoretically give more juice and is it worth the extra money?