The French Parliament recently approved a new law requiring all new commercial buildings to partially have their roofs covered with plants or solar panels. The new requirement will apply to all new buildings in commercial zones. Initially, the proposal posed by French environmental activists was for the roofs to be completely covered by greenery.
The new law adds costs for both building owners and developers, so the government decided to ease up a bit on the cost by allowing for the roofs to be partially covered instead of fully covered.