1 Subjects: “...Office for National Statistics...”

2 Subjects: “...national power system...”

3 Subjects: “...Aspromonte National Park...”

4 Subjects: “...national survey program...”

5 Subjects: “...national park...”

6 Subjects: “...Shennongjia National Park...”

7 Subjects: “...nationally determined contribution...”

8 “... view of different energy systems, from local energy systems and islands to national and multi-national...”

9 “..., national electricity systems, and waste incineration. The analysis of trends and singularities...”

10 “..., from the individual citizen to large multinationals, passing through SMEs; national and international...”

11 “... these innovations explicit. Thus, this volume contributes to the sustainable cities goal of the United Nations....”

12 “... strategic priority at local, national, European, and global levels. This Special Issue will pay attention...”