Mini rail solution is the most competitive solution, and to some extend, it will reduce the installation cost. Below is one type of short rail which can make the solar panel be installed vertically, and is very popular in European solar market.

The length of the rail has 200mm, 300mm, 400mm, and it also can be customized according to the size of your roof.

If you want to save the cost, and for metal roof, you could choose short rail, and the main structures are mini rail, mid clamp and end clamp. If possible, you could offer us local wind speed and snow load, we will check for you if the structure is safe.

We also have other type of mini rail, pls see our website for finding more porducts: WWW.SIC-SOLAR.COM.