From 2020 all new buildings in the European Union must fulfil strict energy saving rules. The European Parliament has just passed the relevant regulations.
From 2020 new residential and office buildings will have to be built so that they produce almost as much energy as they consume. From 2021 private buildings and from 2018 public buildings will have to be fitted with technologies such as heat insulation, solar installations or low-energy lights to amount to extremely low energy consumption (near-zero-energy house), the Parliament demands.
Report in German at http://www.fr-online.de/in_und_ausland/wirtschaft/aktuell/?em_cnt=265954...
Strangely, I couldn't find an English source.
Diet