On the surplus accuracy of data-driven energy quantification methods in the residential sector

Abstract Increasing trust in energy performance certificates (EPCs) and drawing meaningful conclusions requires a robust and accurate determination of building energy performance (BEP). However, existing and by law prescribed engineering methods, relying on physical principles, are under debate for...

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Main Authors: Lars Wederhake, Simon Wenninger, Christian Wiethe, Gilbert Fridgen
Format: Article
Language:English
Published: SpringerOpen 2022-06-01
Series:Energy Informatics
Subjects:
Online Access:https://doi.org/10.1186/s42162-022-00194-8
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author Lars Wederhake
Simon Wenninger
Christian Wiethe
Gilbert Fridgen
author_facet Lars Wederhake
Simon Wenninger
Christian Wiethe
Gilbert Fridgen
author_sort Lars Wederhake
collection DOAJ
description Abstract Increasing trust in energy performance certificates (EPCs) and drawing meaningful conclusions requires a robust and accurate determination of building energy performance (BEP). However, existing and by law prescribed engineering methods, relying on physical principles, are under debate for being error-prone in practice and ultimately inaccurate. Research has heralded data-driven methods, mostly machine learning algorithms, to be promising alternatives: various studies compare engineering and data-driven methods with a clear advantage for data-driven methods in terms of prediction accuracy for BEP. While previous studies only investigated the prediction accuracy for BEP, it yet remains unclear which reasons and cause–effect relationships lead to the surplus prediction accuracy of data-driven methods. In this study, we develop and discuss a theory on how data collection, the type of auditor, the energy quantification method, and its accuracy relate to one another. First, we introduce cause–effect relationships for quantifying BEP method-agnostically and investigate the influence of several design parameters, such as the expertise of the auditor issuing the EPC, to develop our theory. Second, we evaluate and discuss our theory with literature. We find that data-driven methods positively influence cause–effect relationships, compensating for deficits due to auditors’ lack of expertise, leading to high prediction accuracy. We provide recommendations for future research and practice to enable the informed use of data-driven methods.
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spelling doaj.art-7cb83c2687724bf695d5ba23d2800b602022-12-22T00:39:16ZengSpringerOpenEnergy Informatics2520-89422022-06-015112410.1186/s42162-022-00194-8On the surplus accuracy of data-driven energy quantification methods in the residential sectorLars Wederhake0Simon Wenninger1Christian Wiethe2Gilbert Fridgen3credium GmbHBranch Business & Information Systems Engineering of the Fraunhofer FITBranch Business & Information Systems Engineering of the Fraunhofer FITSnT–Interdisciplinary Center for Security, Reliability and Trust, University of LuxembourgAbstract Increasing trust in energy performance certificates (EPCs) and drawing meaningful conclusions requires a robust and accurate determination of building energy performance (BEP). However, existing and by law prescribed engineering methods, relying on physical principles, are under debate for being error-prone in practice and ultimately inaccurate. Research has heralded data-driven methods, mostly machine learning algorithms, to be promising alternatives: various studies compare engineering and data-driven methods with a clear advantage for data-driven methods in terms of prediction accuracy for BEP. While previous studies only investigated the prediction accuracy for BEP, it yet remains unclear which reasons and cause–effect relationships lead to the surplus prediction accuracy of data-driven methods. In this study, we develop and discuss a theory on how data collection, the type of auditor, the energy quantification method, and its accuracy relate to one another. First, we introduce cause–effect relationships for quantifying BEP method-agnostically and investigate the influence of several design parameters, such as the expertise of the auditor issuing the EPC, to develop our theory. Second, we evaluate and discuss our theory with literature. We find that data-driven methods positively influence cause–effect relationships, compensating for deficits due to auditors’ lack of expertise, leading to high prediction accuracy. We provide recommendations for future research and practice to enable the informed use of data-driven methods.https://doi.org/10.1186/s42162-022-00194-8Energy quantification methodsData-driven methodsBuilding energy dataData qualityBuilding energy performancePrediction accuracy theory
spellingShingle Lars Wederhake
Simon Wenninger
Christian Wiethe
Gilbert Fridgen
On the surplus accuracy of data-driven energy quantification methods in the residential sector
Energy Informatics
Energy quantification methods
Data-driven methods
Building energy data
Data quality
Building energy performance
Prediction accuracy theory
title On the surplus accuracy of data-driven energy quantification methods in the residential sector
title_full On the surplus accuracy of data-driven energy quantification methods in the residential sector
title_fullStr On the surplus accuracy of data-driven energy quantification methods in the residential sector
title_full_unstemmed On the surplus accuracy of data-driven energy quantification methods in the residential sector
title_short On the surplus accuracy of data-driven energy quantification methods in the residential sector
title_sort on the surplus accuracy of data driven energy quantification methods in the residential sector
topic Energy quantification methods
Data-driven methods
Building energy data
Data quality
Building energy performance
Prediction accuracy theory
url https://doi.org/10.1186/s42162-022-00194-8
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