Due to cheap land prices, in the Nordic countries new collector arrays are ground-mounted (concrete foundations or pile-driven steel) in suitable areas (low-yield agricultural, industry etc.). Countries with high ground prices tend to place solar collectors on building roofs, following the 'block plant' variant of CSHPs.
Because of affordable land costs, in the Nordic countries new collector arrays are installed on the ground using concrete foundations or steel piles in suitable regions (agricultural lands, industrial zones, etc.). Countries with high land prices opt for placing solar collectors on building rooftops, employing the 'block plant' variant of CSHPs.