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.
Due to low land costs, new collector arrays are installed on the ground (concrete foundations or steel piles) in suitable areas (agricultural lands, industrial zones, etc.) in Nordic countries. Countries with high land prices use building rooftops for solar collectors, similar to the 'block plant' CSHPs.