Cost Optimization of a Zero-Emission Office Building

The cost-effectiveness of energy efficiency measures meant to achieve a zero-emission office building is investigated and compared to business as usual energy efficiency measures. The laboratory for zero emission buildings, the ZEB Lab, located in Trondheim, Norway, is an office building designed an...

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Main Authors: Nicola Lolli, Anne Gunnarshaug Lien, Øystein Rønneseth
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Buildings
Subjects:
Online Access:https://www.mdpi.com/2075-5309/10/12/222
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author Nicola Lolli
Anne Gunnarshaug Lien
Øystein Rønneseth
author_facet Nicola Lolli
Anne Gunnarshaug Lien
Øystein Rønneseth
author_sort Nicola Lolli
collection DOAJ
description The cost-effectiveness of energy efficiency measures meant to achieve a zero-emission office building is investigated and compared to business as usual energy efficiency measures. The laboratory for zero emission buildings, the ZEB Lab, located in Trondheim, Norway, is an office building designed and built to compensate its lifecycle emissions with the use of a large array of building-integrated photovoltaic panels, pursuing a zero-emissions ambition level. Three design alternatives are investigated by downgrading the building insulation level to the values recommended by the currently enforced Norwegian building code, the byggteknisk forskrift TEK17. A sensitivity analysis of the variation of the installed area of the photovoltaic panels is performed to evaluate if smaller areas give better cost performances. Net present values are calculated by using three scenarios of future increase of electricity price for a time horizon of 20 years. Results show that business as usual solutions give higher net present values. Optimized areas of the photovoltaic panels further increase the net present values of the business as usual solutions in the highest electricity price scenario. The zero-emission ambition level shows a higher net present value than that of the business as usual solutions for a time horizon of at least 36 years.
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spelling doaj.art-b50913d2ae5d4ba2a4b04af3117353882023-11-20T22:58:12ZengMDPI AGBuildings2075-53092020-11-01101222210.3390/buildings10120222Cost Optimization of a Zero-Emission Office BuildingNicola Lolli0Anne Gunnarshaug Lien1Øystein Rønneseth2SINTEF Community, Høgskoleringen 7b, NO-7465 Trondheim, NorwaySINTEF Community, Høgskoleringen 7b, NO-7465 Trondheim, NorwaySINTEF Community, Høgskoleringen 7b, NO-7465 Trondheim, NorwayThe cost-effectiveness of energy efficiency measures meant to achieve a zero-emission office building is investigated and compared to business as usual energy efficiency measures. The laboratory for zero emission buildings, the ZEB Lab, located in Trondheim, Norway, is an office building designed and built to compensate its lifecycle emissions with the use of a large array of building-integrated photovoltaic panels, pursuing a zero-emissions ambition level. Three design alternatives are investigated by downgrading the building insulation level to the values recommended by the currently enforced Norwegian building code, the byggteknisk forskrift TEK17. A sensitivity analysis of the variation of the installed area of the photovoltaic panels is performed to evaluate if smaller areas give better cost performances. Net present values are calculated by using three scenarios of future increase of electricity price for a time horizon of 20 years. Results show that business as usual solutions give higher net present values. Optimized areas of the photovoltaic panels further increase the net present values of the business as usual solutions in the highest electricity price scenario. The zero-emission ambition level shows a higher net present value than that of the business as usual solutions for a time horizon of at least 36 years.https://www.mdpi.com/2075-5309/10/12/222zero emission buildingoffice buildingnet present valuecost optimizationbuilding integrated photovoltaicsbyggteknisk forskrift TEK17
spellingShingle Nicola Lolli
Anne Gunnarshaug Lien
Øystein Rønneseth
Cost Optimization of a Zero-Emission Office Building
Buildings
zero emission building
office building
net present value
cost optimization
building integrated photovoltaics
byggteknisk forskrift TEK17
title Cost Optimization of a Zero-Emission Office Building
title_full Cost Optimization of a Zero-Emission Office Building
title_fullStr Cost Optimization of a Zero-Emission Office Building
title_full_unstemmed Cost Optimization of a Zero-Emission Office Building
title_short Cost Optimization of a Zero-Emission Office Building
title_sort cost optimization of a zero emission office building
topic zero emission building
office building
net present value
cost optimization
building integrated photovoltaics
byggteknisk forskrift TEK17
url https://www.mdpi.com/2075-5309/10/12/222
work_keys_str_mv AT nicolalolli costoptimizationofazeroemissionofficebuilding
AT annegunnarshauglien costoptimizationofazeroemissionofficebuilding
AT øysteinrønneseth costoptimizationofazeroemissionofficebuilding