“…Transaction costs associated with the implementation of energy efficiency projects typically arise as a result of searching for and assessing information, project preparation, finding partners, contracting, persuading, negotiating and coordinating with partners, decision-making, implementing and following-up investment actions, for example, through maintenance or validating data. For more information on transaction costs on searching for and assessing information see Björkqvist and Wene (1993), Hein and Blok (1995), Mundaca and Neij (2007), Sanstad and Howarth (1994), Sathaye and Murtishaw (2004), Sioshansi (1991), for project preparation, see BleylAndroschin, Seefeldt and Eikmeier (2009), for finding partners, contracting, and persuading, see Mundaca (2007), for negotiating with and coordinating partners, see Bleyl-Androschin, et al (2009), Mundaca (2007, Ostertag (1999), for decision-making, see see Björkqvist and Wene (1993), Hein and Blok (1995), for implementing and following-up investment actions, see Bleyl-Androschin, et al (2009), Hein and Blok (1995), Mundaca (2007), Qian, Chan and Choy (2013), Sathaye and Murtishaw (2004), for maintenance, see Ostertag (1999) and for validating data, see Mundaca (2007). The research focus of transaction costs, according to existing literature, has been mostly on industry, i.e.…”