Article 15a 4.

Member States shall ensure that public buildings at national, regional and local level fulfil an exemplary role as regards the share of renewable energy used, in accordance with Article 9 of Directive 2010/31/EU and Article 5 of Directive 2012/27/EU. Member States may allow that obligation to be fulfilled by, inter alia, providing for the roofs of public or mixed private-public buildings to be used by third parties for installations that produce energy from renewable sources.