The Grenelle Building Plan was established in order to reach the targets set by the Grenelle de l'Environnement in the buildings sector, with a focus on public buildings. Such buildings are submitted to a reduction obligation of GHG emissions of 50% by 2018 (and therefore increase the use of renewable energy). Regarding new public buildings, they shall meet the energetic performance requirements of the label BBC (Bâtiments Basse Consommation - Low Consumption Buildings) by 2012 and be energy-positive by 2020 (art. 4, Law No. 2009-967). "Energy-positive buildings" is defined as achieving a blanace between non-renewable energy consumption and renewable energy production injected into the grid (Art. 2, Decree of 21 December 2016). The balance thresholds to be met by new public buildings shall be defined in an implementing order (a draft was published in 2017).