Vertical solar panels are sub optimal for solar production and that is the biggest issue facing vertical installation.
Vertical wall mounted solar panels.
Fewer rails are required to mount a solar panel vertically instead of horizontally.
Lower energy production means your installation will take longer to pay itself off lowering your roi and increasing the amount of time it takes to make your money back.
It is easier to have a continuous row of solar panels if they are installed vertically.
Traditional solar arrays typically fall off in productivity during the winter but a wall mounted array will perform the best during this time.
Of course not every home or roof is designed the same.
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Solar arrays cannot always occupy a customer s rooftop but ground mount systems might not be the only other backup option in these cases.
The alaskan wall mounted array even outperforms the roof mounted array in overall annual production when snow is considered.
Installing solar panels is a money saving investment.
On the other hand vertical solar panels are more likely to get washed when it rains.
Installers have adapted pre existing mounting and racking technology or developed their own to install solar panels on the south facing walls of buildings.
Also for those who live in snow heavy areas installing vertical solar panels can help with production.
There are high chances of dust accumulating over it which can impede the process of production of electricity.