Innovative EPC Indicator

Real Energy Consumption

Currently, EPCs are mostly based on calculation. The gap between real energy performance and EPC calculated performance can be significant and usually is a source of confusion to EPC users and other stakeholders (e.g., public authorities, energy managers, financing bodies, energy suppliers). In order to tackle this barrier and to increase trust in EPC, it is important to investigate how and to what extent measured data of energy use can be linked to the EPC calculated indicators or even replace them in existing EPC methodologies. 

X-tendo elaborates and tests a methodology for a measured energy performance indicator that reflects the actual energy performance of the building at standard conditions of climate and use. The calculation tool is complemented by a report with options to process real energy use data to represent part or global energy performance that may be used in cases with limited amount or detail of information or in very complex buildings (e.g., malls, hospitals) where the theoretical approach would be time consuming and costly.

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  • Introductory report

    Brief report giving an overall evaluation of the feature and describing the basic concept, the methods behind, existing good practices and how to implement it.

Methodological approaches
Calculation procedures
  • User guide and calculation tool for the Real Energy Consumption feature

    This material consists of the Excel spreadsheet and user guide for the Real Energy Consumption feature. The Excel sheets provide the calculation methodology and assessment process. The guide complements the Excel spreadsheet and allows public authorities as well as EPC practitioners to implement them. This guide describes the general principles of the method, the formula structure, methodological options and definitions of input parameters and output indicators. It also provides guidance on how to obtain the input parameters to be inserted in the calculation tool and gives basic information on the output to facilitate the correct interpretation of the results.

  • Concrete implementation of new energy performance certificates features: testing and results in nine countries

    This report provides the summary of the outcomes of the testing activities for each of the 10 features in one or several implementing countries. This is mainly based on the analysis of the evaluation questionnaires filled out by the implementing partners, but also on the content of the testing results reports. The questionnaires hereby consist of general questions along the testing steps, questions on testing time and related costs, an evaluation against defined cross-cutting criteria (Quality and Reliability, User-friendliness, Economic feasibility, and Consistency with ISO/CEN standards) and final thoughts.

Recommendations for Implementation
  • . Implementation guideline and replicability potential of the innovative feature for the next generation EPCs

    This report brings together the outputs of the evaluation of the test projects alongside the insight from end-users and stakeholders. It includes estimations of (1) the barriers and drivers for the wide uptake of the feature, (2) the effects of the wider implementation of the developed innovative feature of EPCs in Europe and (3) the necessary next steps in order to implement the innovative feature in the certification schemes around Europe.

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