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Cost-benefit analysis of nZEB energy efficiency strategies with on-site photovoltaic generation

Pikas, Ergo, Kurnitski, Jarek, Thalfeldt, Martin and Koskela, Lauri (2017) Cost-benefit analysis of nZEB energy efficiency strategies with on-site photovoltaic generation. Energy, 128. pp. 291-301. ISSN 0360-5442

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Abstract

Many studies on the deployment of and investment in renewable energy (RE) technologies have focused on job creation associated with energy production at the macroeconomic level and across renewable energy technologies. We propose another perspective, the use of solar photovoltaic (PV) technology to attain a nearly zero-energy building (nZEB) class. The aim of this research is to investigate the costs and benefits for private and public entities when constructing nZEB or adopting nZEB policies. A quantitative research approach is taken when modelling required PV capacities, net present cash flows, subsidies, and job generation. Findings show that at current electricity tariffs and solar PV system capacities and production levels, single family houses, apartment buildings, and other building types require 0.044 €/kWh, 0.037 €/kWh, and 0.024 €/kWh, respectively, in government subsidies on energy sold back to the grid. Office buildings were profitable without the subsidy. In this study, we argue that investments in RE, specifically, PV technology, will bring in approximately 2.1 M€ of additional revenue to the Estonian government over a 20 years period as tax return overruns subsidies. However, nZEB investments are expected to become cost-optimal without subsidies, due to the increasing efficiency and decreasing costs of PV systems.

Item Type: Article
Uncontrolled Keywords: nearly Zero Energy Buildings (nZEB), government subsidy, solar photovoltaic, job generation, tax revenue
Subjects: T Technology > TH Building construction
Schools: School of Art, Design and Architecture > Innovative design lab
School of Art, Design and Architecture
Related URLs:
Depositing User: Lauri Koskela
Date Deposited: 12 May 2017 08:06
Last Modified: 12 May 2017 08:06
URI: http://eprints.hud.ac.uk/id/eprint/31845

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