Traditionally, the energy efficiency in buildings has been evaluated through well-established protocols that highly depend on Key Performance Indicators (KPI). However, nowadays, the trend has moved from buildings to districts and cities where not only energy efficiency is pivotal, but also the sustainability under the scope of smart city. There exist several widely recognized environmental assessment methodologies such as BREEAM or LEED that aim to assess the sustainability of buildings based on a rating system represented by a set of indicators, namely credits. Nevertheless, the application of these standards is complex and costly. Hence, this paper presents an alternative holistic sustainability protocol, developed under the European project CITyFiED, driven by a comprehensive set of indicators to assess the sustainability of urban areas in terms of energy efficiency, environmental, economic and social impact, together with the effect of the information and communication technologies.
High upfront costs that district energy retrofitting entails, implies long-term financing schemes. Moreover, multi-private ownership in Spanish residential sector hinders the decision-making process. In the case of CITyFiED project, an innovative business model has been developed between an Energy Services Company and a Building company for Torrelago district renovation. This paper addresses this demo case from a global perspective, identifying the elements of the business case using the Canvas methodology approach and analysing the financing scheme. After a total investment of 16.5 M€, the energy savings achieved enable the payback without increasing the Community fees to the dwellings’ owners.
15 November 2017