"Poorly oriented panel" can equally well be described as "generates most of its power in the evening, when you have gotten home from work and want to use electr

"Poorly oriented panel" can equally well be described as "generates most of its power in the evening, when you have gotten home from work and want to use electricity". It's better to get power at a useful time, even if that means the panel only generates half as much as it could, because storage costs far more than panels.