A Practical Methodology for Building a Municipality-Led Renewable Energy Community: A Photovoltaics-Based Case Study for the Municipality of Hersonissos in Crete, Greece

Efthymiou, Emmanuel N.; Yfanti, Sofia; Kyriakarakos, George; Zervas, Panagiotis; Langouranis, Panagiotis; Terzis, Konstantinos; Stavrakakis, G.

doi:10.3390/su141912935

Cited by 13 publications

(9 citation statements)

References 26 publications

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“…As far as the photovoltaics measure is concerned, it is treated as grid-connected under the net-metering mechanism while the energy cost reduction due to the PV is estimated following the process and electrical energy unit cost found in ref. [29].…”

Section: Typologies' Manipulation Towards An Erb Planmentioning

confidence: 99%

Application of the Typology Approach for Energy Renovation Planning of Public Buildings’ Stocks at the Local Level: A Case Study in Greece

Stavrakakis,

Bakirtzis,

Drakaki

et al. 2024

Energies

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According to the latest energy efficiency European directive (EED 2023/1791/EU), the expected energy renovation rate of at least 3% of the buildings’ floor area each year towards nearly zero-energy buildings (nZEBs) is extended to include public buildings not only of the central government (as per the first EED 2012/27/EU) but also of regional and local authorities. This poses a great challenge, especially for Municipalities that often manage large building stocks with high energy demands. In response to this challenge, this paper presents the application of the so-called “typology approach” for conducting public buildings’ energy renovation plans at the local level. A computational survey is initially introduced to decide the optimal set of building-stock clustering criteria among all possible combinations, involving the minimization of the RMSE index regarding the primary energy consumption of each building. For a representative building from each identified typology, the key performance indicators (KPIs) are computed for alternative energy-upgrading scenarios. Exploiting the IMPULSE Interreg-MED project tools, the KPIs from each representative building are at first extrapolated to all buildings of the examined stock and, finally, a gradual energy renovation plan is automatically produced based on user-defined decision parameters including the required annual renovation rate. The methodology is applied for the case of the Municipality of Hersonissos in Greece. For the specific 44-buildings’ stock it was found that the optimal clustering set included four criteria, building use, construction year, heating, and a cooling system, leading to 15 building typologies. Finally, assuming a 7% renovation rate per year, a 12-year gradual renovation (nZEB transformation) plan is obtained foreseeing an 85% CO2 emissions’ reduction.

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Section: Typologies' Manipulation Towards An Erb Planmentioning

confidence: 99%

Application of the Typology Approach for Energy Renovation Planning of Public Buildings’ Stocks at the Local Level: A Case Study in Greece

Stavrakakis,

Bakirtzis,

Drakaki

et al. 2024

Energies

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“…The configuration of the PV system and energy calculations are obtained using the online PVdedicated webtool SolarEdge [26] which is, among others, suitable for PV simulation surveys [27,28]. Based on the energy calculations, the suggested PV system admits an annual electricity production of 17,640 kWh which is addressed to the electricity demand of the PoDs of Table 3.…”

Section: Energy Production Interventionsmentioning

confidence: 99%

Energy Retrofit of Public Educational Buildings and Sustainable Mobility: Case study in Crete

Heracleous,

Kyriakidis,

Stavrakakis

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The European Union, through the Energy Performance of Buildings Directive and the Energy Efficiency Directive, has been establishing requirements and expectations regarding energy savings and efficiency in buildings. Educational buildings comprise a significant part of public buildings that should lead the way in the energy retrofitting of existing building stock. The present study aims to create intelligent school complexes that will be energy upgraded to meet the need for reduced energy consumption in the public sector in order to comply with EU guidelines, optimize the sense of comfort, introduce the renewable energy and enhance sustainable mobility by creating electric charging stations for vehicles. Retrofitting approaches consider thermal insulation of the building envelope, replacement of heating and lighting system with more efficient ones and installation of building management system for the creation of an electronic application that will monitor the energy status of the building in real time and will train users in the proper use of new energy management technologies from RES. The overall objective of the project is to create Intelligent Buildings Standards of Nearly Zero Consumption which promote an overall ecological character of public buildings demonstrating their social role.

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“…A study of in installation of PV stations on two school rooftops in Hersonissos Crete [28], offers a practical methodology for developing municipality-led Renewable Energy Communities (RECs). Through a multi-criteria assessment, optimal PV placements were determined, emphasizing the importance of the "loose-restriction" factor in navigating legislative and technical barriers.…”

Section: School Case Studiesmentioning

confidence: 99%

A Review of Energy Efficiency Interventions in Public Buildings

Papadakis,

Katsaprakakis

2023

Energies

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This research provides a comprehensive exploration of energy efficiency dynamics in non-residential public buildings such as schools, swimming pools, hospitals, and museums. Recognizing the distinct energy consumption patterns of each building type, the study accentuates the unique challenges they present, with a particular focus on the continuous and intensive energy demands of hospitals and the unparalleled energy needs of swimming pools. Through an extensive review of various case studies, the research unveils prevailing energy consumption trends, highlighting the role of metrics in assessing energy efficiency and the inherent challenges these metrics face in ensuring uniformity and direct comparability. A core element of this analysis emphasizes the dual nature of technical retrofitting, categorizing interventions into passive and active measures. The research delves into the sustainability imperatives of energy interventions, exploring the economic motivations underpinning retrofit decisions, and the intricate relationship between advanced technological solutions and the behavioral tendencies of building operators and users. Additionally, the study uncovers the influence of external determinants such as climatic factors and government policies in shaping energy consumption in public buildings. In synthesizing these findings, the paper offers insightful recommendations, emphasizing the need for an integrated approach that harmonizes technological innovations with informed operational habits, aiming to optimize energy efficiency in public non-residential buildings.

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A Practical Methodology for Building a Municipality-Led Renewable Energy Community: A Photovoltaics-Based Case Study for the Municipality of Hersonissos in Crete, Greece

Cited by 13 publications

References 26 publications

Application of the Typology Approach for Energy Renovation Planning of Public Buildings’ Stocks at the Local Level: A Case Study in Greece

Application of the Typology Approach for Energy Renovation Planning of Public Buildings’ Stocks at the Local Level: A Case Study in Greece

Energy Retrofit of Public Educational Buildings and Sustainable Mobility: Case study in Crete

A Review of Energy Efficiency Interventions in Public Buildings

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