Towards the nearly zero and the plus energy building: Primary energy balances and economic evaluations

Marino, Concettina; Nucara, Antonino; Panzera, Maria Francesca; Pietrafesa, Matilde

doi:10.1016/j.tsep.2019.100400

Cited by 26 publications

(13 citation statements)

References 46 publications

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“…With the solar thermal system, it is possible to only partially compensate the rate of thermal energy spent to meet the building's needs. Therefore, as reported in Marino et al [42], the remaining amount of gas which is converted into primary energy through an appropriate conversion factor (1.05 for natural gas) will be compensated by the photovoltaic system (Table 7). In this way, the energy balance of a NZEB is satisfied, as shown in Equation (2).…”

Section: Auxiliarymentioning

confidence: 96%

Feasibility Study on the Spread of NZEBs Using Economic Incentives

et al. 2021

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Nowadays, environmental and energy issues attract a lot of attention in the civil buildings sector, leading to the emergence of new technologies and new targets, which include Net Zero Energy Buildings (NZEBs). However, despite the great response in scientific research, the spread of NZEBs in Europe is quite limited. This is due not only to the lack of transposition of the related European Directives into the various national legislations, but also to the high initial cost of such high-performance buildings. The aim of this paper is to demonstrate how different energy retrofit strategies on existing buildings can lead to the achievement of the NZEB target if encouraged by tax incentives, at zero or almost zero cost. The introduction of tax incentives by individual EU member states would allow the spread of NZEBs that are still underdeveloped, especially in highly urbanized contexts. A suitable building energy dynamic simulation software has been used. The case study refers to a villa located in Southern Italy and for which different energy retrofit strategies are proposed to reach the NZEB target. For each case, an energy and economic evaluation is carried out to evaluate the feasibility of the interventions, exploiting the so-called “Super-Eco-Bonus 110%” incentive. The main results highlight that among the various solutions, the greatest energy cost reductions are obtained with the use of heat pump generators. Furthermore, the solution with the biomass boiler allows the use of a smaller number of photovoltaic panels to meet the yearly energy balance of the NZEB.

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Section: Auxiliarymentioning

confidence: 96%

Feasibility Study on the Spread of NZEBs Using Economic Incentives

et al. 2021

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“…These EVs would increase the demand and load on the grids and they can also be used as peak savings with batteries. Other aspects, such as building mass and energy storage, have to be included in future energy systems [29]. Energy storage can provide needed flexibility and resilience to buildings [30].…”

Section: Reasons For Positive Energy District (Ped) Solutions Instead Of Building Level and Zeb Soultionsmentioning

confidence: 99%

IEA EBC Annex83 Positive Energy Districts

et al. 2021

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At a global level, the need for energy efficiency and an increased share of renewable energy sources is evident, as is the crucial role of cities due to the rapid urbanization rate. As a consequence of this, the research work related to Positive Energy Districts (PED) has accelerated in recent years. A common shared definition, as well as technological approaches or methodological issues related to PEDs are still unclear in this development and a global scientific discussion is needed. The International Energy Agency’s Energy in Buildings and Communities Programme (IEA EBC) Annex 83 is the main platform for this international scientific debate and research. This paper describes the challenges of PEDs and the issues that are open for discussions and how the Annex 83 is planned and organized to facilitate this and to actively steer the development of PEDs major leaps forward. The main topics of discussion in the PED context are the role and importance of definitions of PEDs, virtual and geographical boundaries in PEDs, the role of different stakeholders, evaluation approaches, and the learnings of realized PED projects.

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“…Due to the need to deal with uncertain and intermittent output and load shifting of renewable energy systems (RES), energy storage is one of the most critical arguments today [59]. Energy storage technologies can provide needed flexibility and resilience while being more influential at the district level [60].…”

Section: A Need For Balancing Demand and Supplymentioning

confidence: 99%

Positive Energy Districts: Identifying Challenges and Interdependencies

et al. 2021

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Positive Energy Districts (PED) are areas within cities that generate more renewable energy than they consume, contributing to cities’ energy system transformation toward carbon neutrality. Since PED is a novel concept, the implementation is very challenging. Within the European Cooperation in Science and Technology (COST) Action, which offers an open space for collaboration among scientists across Europe (and beyond), this paper asks what the needs for supporting the implementation of PEDs are. To answer this, it draws on Delphi process (expert reviews) as the main method alongside the literature review and also uses surveys as supplementary methods to identify the main challenges for developing PEDs. Initial findings reveal seven interacting topics that later were ranked as highest to the lowest as the following: governance, incentive, social, process, market, technology and context. These are interrelated and interdependent, implying that none can be considered in isolation of the others and cannot be left out in order to ensure the successful development of PEDs. The resources that are needed to address these challenges are a common need for systematic understanding of the processes behind them, as well as cross-disciplinary models and protocols to manage the complexity of developing PEDs. The results can be the basis for devising the conceptual framework on the development of new PED guides and tools.

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Towards the nearly zero and the plus energy building: Primary energy balances and economic evaluations

Cited by 26 publications

References 46 publications

Feasibility Study on the Spread of NZEBs Using Economic Incentives

Feasibility Study on the Spread of NZEBs Using Economic Incentives

IEA EBC Annex83 Positive Energy Districts

Positive Energy Districts: Identifying Challenges and Interdependencies

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