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Building Energy Usage and Location – JRC Energy & Cities project; from building to urban area

Hans Bloem, Giacomo Martirano, Maria Teresa Borzacchiello and Isabella Maschio

(Submission #309)


Summary Presented will be the recently started Energy & Cities pilot project that deals with energy usage in the built environment, urban areas, cities, regions up to Member State level. A six level approach is discussed that deals with different methodologies using different data resources. A top-down empirical approach starts from administrative data (INSPIRE harmonization of data) resulting in performance label values. A bottom-up approach starts from calculation rules that can be simplified up to detailed standardized calculation method. The validation of the different methods relies a lot on measured data arriving from field experimental work or from regular metering data. The issue of big data handling in relation to complexity and uncertainty will be discussed also. The importance of location issues related to building energy performance is highlighted in the example of energy integration in the built environment.

Introduction Up to 40% of final energy is consumed in the residential and tertiary building sector and has an important energy reduction potential and hence a contribution to reduce the GHG emissions in Europe. The average specific energy consumption of the estimated 220 million dwellings in EU-28 is 185 kWh/m2/year while the non-residential sector is estimated to consume 280 kWh/m2/year. The recent technologies for gathering and elaborating real data (metering) have still to be deployed and could contribute significantly to the goal of improving energy usage: “doing-more-with-less-energy”. The obtained information is important for making decision on refurbishment, investing in renovation and managing the energy flows.

Six approaches are presented briefly ranging from a holistic assessment to a simplified calculation one. The required data obtained from databases, handbooks or measurements will have to be considered in the context of complexity of the applied method and the information contained in the data. These approaches deal with location and big data treatment and can be considered being part of three overall classifications e.g. holistic, measured data and calculation. Two holistic approaches include a simplified method based on administrative data and a more extended approach including climate and consumer information by a feedback procedure. Two approaches based on measured data include energy consumption and performance data, including metering data. One approach is based on specific experiments to collect data for the assessment of the building performance. Final approaches are based on calculation by simulation models. One approach applies detailed calculation according to calculations as described in CEN standards, while another, more indicative approach is a simplified calculation method.

Reference: European Union Location Framework – Location data for buildings related energy efficiency policies: Feasibility Study; JRC 96946


Topic Area:  [2.1] Urban and rural sustainability: Smart cities / Smart rural
Abstract Type:  Oral Presentation

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