“…Most work in this area looks at the different design challenges surrounding materialising invisible and intangible energy resources and tailoring feedback on the consumption of these [47]. In order to achieve this, designers and researchers have visualised past and forecasted consumption data on mobiles [38,59] or insitu displays of electricity [45,58,62,67], heating [16], water [22,46], and food [15,74]. Others have also explored ambience and art [24,56], lighting [33,34], and physical materials [9,36,68] as feedback techniques.…”