Ambient Intelligence as One of the Key ICT Factors for Energy Efﬁciency in Buildings Antun Kerner 1 , Dina Simunic 2 and Ramjee Prasad 3 1 Kerner Inc., 10000 Zagreb, Croatia; e-mail: antun.kerner@ericsson.com 2 Faculty of Electrical Engineering and Computing (FER), University of Zagreb, Zagreb, Croatia; e-mail: dina.simunic@fer.hr 3 Center for TeleInFrastruktur, Aalborg University, Aalborg, Denmark; e-mail: prasad@es.aau.dk Received 29 November 2012; Accepted 29 December 2012 Abstract Ambient intelligence (AmI) is a multidisciplinary paradigm based on the Invisible Computer and Ubiquitous Computing. In AmI, technologies are deployed to make computers disappear in the background, while the human user moves into the foreground in complete control of the augmented en- vironment. AmI is a user-centric paradigm, it supports a variety of artiﬁcial intelligence methods and works pervasively, no intrusively, and transparently to aid the user. AmI supports and promotes interdisciplinary research en- compassing the technological, scientiﬁc and artistic ﬁelds creating a virtual support for embedded and distributed intelligence. In this paper authors are looking for possibilities to implement AmI as a way for saving energy in the construction industry, especially in buildings. AmI combines ICT and sensor technologies and enables monitoring, controlling and management of using energy in buildings and becomes key factor of energy efﬁciency in the construction industry. Keywords: Ambient intelligence, energy efﬁcency, sensor network, smart environment. Journal of Green Engineering, Vol. 3, 219–243. c  2013 River Publishers. All rights reserved.