Recently AlunoTec develop an more economical pergola which called BIO-FOLA. You can have shade by controlling the hand cranker or motor easily while still being able to let the sunshine in when it is preferred.
With the built in gutter system, you have shelter from the rain as well. Its louvers can be opened and closed to your desired position. BIO-FOLA with standard size 4m x 4m and 3m x 3m so that it would be sold by containers.
Welcome to contact us to know more about this system.