• Energy Research
• 7. Clean energy close

The government of Cyprus has developed packages addressing the energy performance of non-residential buildings, in order to achieve the national energy reduction objectives. Currently, Decree 366/2014 is in force, defining the requirements for a building to qualify as a nearly Zero Energy Building (nΖΕΒ). However, this falls short of addressing sufficiently the high cooling energy demand of buildings in Cyprus. This paper examines the energy and economic viability of various refurbishment scenarios by considering a public office building in the city of Limassol as a case study. The energy performance of the building was analysed first for its current state and also according to nZEB standards. In addition, a set of supplementary measures was examined, to develop a cost-effective alternative nZEB energy refurbishment model. Based on the results, the existing legislation, defining an nZEB is reconsidered prompting a proactive discussion towards the improvement of the current energy regulating Directives.

The summer-dominated Mediterranean island of Cyprus is often considered in the contexts of beach tourism, sunny weather, and different types of business economic activities and services. In terms of its climatic conditions, extreme heat and mild winters characterise the island; yet, recent evidence has shown that winter poses a significant threat to public health. Its excess winter mortality is amongst the highest in Europe and there is an increased risk of energy-poverty-related mortality compared to total mortality. This study is an extension of previous research, with the objective of further scrutinizing the shift observed between urban and rural energy poverty mortality in the time of a severe nationwide financial crisis. Mortality and temperature data for the period of 2008–2018, as well as macroeconomic indicators, were investigated through a linear regression analysis. The results indicated that the declining economic situation of the island severely hit rural areas, with a significant increase in energy-poverty-related mortality, while urban areas were more resilient to this. There are three existing challenges linked to energy poverty: low incomes, high energy prices, and poor building energy efficiency. In Cyprus, all three coincide and are aggravated in times of crisis, creating conditions of extreme vulnerability for populations already in a disadvantaged position. This study’s motivation was to highlight the intense vulnerability associated with crises in Cyprus, and its outcomes call for higher levels of support at such times, especially when it comes to rural populations.

Safeguarding affordable and energy-efficient medical services has emerged as a crucial necessity to sustain national healthcare systems, especially in view of the current pandemic. While a set of national standards and guidelines aim to set minimum energy requirements for the building facilities, more insight into the healthcare sector’s energy consumption in Cyprus is deemed necessary, since it is the 4th most energy-demanding sector per square meter in this country. This is the first extended research on energy consumption in healthcare facilities across the different climatic zones of Cyprus and the types of fuel favoured in each zone, which marks the novelty of this work. The findings of the study highlight that the coastal and inland climatic zones are the most energy-challenging regions, with more than 60% of the final energy needs covered by electricity. On the contrary, in the mountainous region, approximately 80% of the final energy needs are covered by oil and attributed mainly to heating purposes. The average national primary energy consumption of healthcare facilities was found to be 497 kWh/m2 in air-conditioned spaces. Therefore, this study highlights that the mean primary energy consumption per building surface is approximately 4 times higher than the national threshold for nZEBs; compelling critical consideration of intervention for their energy enhancement. Moreover, healthcare facilities in mountainous regions in Cyprus are heavily reliant on conventional fuel; an unreliable and highly polluting energy option. The work demonstrates the prominent challenge and high potential for energy retrofit of the examined facilities and their upgrading to nZEB-Hospitals, towards the endeavour to a climate-neutral energy transition.

Energy Poverty (EP) is the inability to attain a socially and materially necessitated level of domestic energy services. In the EU this occurs primarily due to low incomes, poor energy performance of buildings and high energy costs. The impacts of EP range from impaired social lives to unhealthy living conditions, with further consequences in the physical and mental health of energy poor individuals. Member states have been assigned by the EU with the responsibility of dealing with EP within their own territories. This is attainable mainly by creating effective policies, while also encouraging synergies among policies of different fields. However, scientific knowledge is gathered and action is taken on a national level only in a limited number of EU countries. For this reason, this paper aims to fill in the gap and capture snapshots from five EU countries (Cyprus, Spain, Portugal, Bulgaria and Lithuania) where EP has not been exhaustively examined. The study provides an overview of selected policies and measures directly or indirectly targeting EP alleviation and analyses their history and evolution at an EU level as well as at national level. It considers the different geographical dimensions, conditions and aspects (e.g. national or regional) where EP is encountered, in an attempt to identify any variances or similarities in the approaches adopted. Through this comparative study, strengths and weaknesses of national strategies are identified and analysed. Conclusively, based on this analysis, recommendations are made on how to utilise policy tools and provide the most efficient support to energy poor households in the corresponding countries 1

Energy poverty is the inability of a household to maintain basic energy services in the household, such as heating and cooling, due to unaffordability. This issue has been gaining public awareness since the financial crisis of 2008. Based on European-wide indicators, Cyprus demonstrates a high percentage of households with poor energy affordability. However, an in-depth investigation on energy poverty manifestations and measures has not been carried out. This paper aims to address this gap in knowledge, by outlining current measures associated with vulnerable consumers in Cyprus. Recommendations are made for the adoption of additional and/or complimentary action to effectively address energy poverty in Cyprus. Furthermore, a web-based survey collected demographic and economic information of dwellers, as well as technical characteristics of dwellings and perception of thermal comfort. Preliminary results indicate that approximately 40% of respondents reported spending up to a quarter of their net income towards energy bills.

Energy poverty is an issue now widely recognised for its detrimental impacts and research in Europe has intensified over the last decade. Many different methodologies of examining the topic have surfaced, with a common one being based on regional-based practices. Open source data are extremely useful for such approaches, because they offer unlimited access to information. The Nomenclature of Territorial Units for Statistics (NUTS) is a framework for data collection on different geographic levels that provides different levels of statistical analysis for regions within a single country. It was set up in the 1970's by the European Union, and existing research work has already explored the valuable application of the NUTS system in certain areas. Nevertheless, the constraints of open source data (such as data based on NUTS regions), in reference to small scale member states, have not been exhaustively addressed.In this study the shortcomings of open source data are explored, by examining energy poverty in an area where the efficacy of the NUTS system is restricted. Cyprus is a member state in the European Union and is represented by a single NUTS category, for all levels of classification, unlike the majority of the rest. Data therefore exists only at the national level - something which contradicts the purpose of the different NUTS levels. In effect, for the case of Cyprus, this results in lack of differentiation among distinct climatic regions and disregarding the urban-rural dichotomy. It essentially renders this classification system inapt for Cyprus, while research activities become limited to the extent of data obtained through other means. Therefore, the study highlights the challenges researchers have to face when approaching a topic for Cyprus from a regional lens. To this end, geographical information systems software is used to observe a simplistic composite indicator of energy poverty in a medium-scale country (where NUTS is applicable), in relation to Cyprus. The effectiveness and potential impact of the outcomes in relation to public awareness, decision-making for policy makers and initiatives of local agents are examined and discussed.Ultimately, the study highlights that even when high quality indicators of energy poverty exist at the European Union level (Eurostat), under current circumstances they cannot be employed effectively to examine energy poverty regionally within Cyprus. Recommendations are proposed to overcome data access limitations in areas where popular open access databases are inadequate.

The intensity and duration of hot weather and the number of extreme weather events, such as heatwaves, are increasing, leading to a growing need for space cooling energy demand. Together with the building stock’s low energy performance, this phenomenon may also increase households’ energy consumption. On the other hand, the low level of ownership of cooling equipment can cause low energy consumption, leading to a lack of indoor thermal comfort and several health-related problems, yet increasing the risk of energy poverty in summer. Understanding future temperature variations and the associated impacts on building cooling demand will allow mitigating future issues related to a warmer climate. In this respect, this paper analyses the effects of change in temperatures in the residential sector cooling demand in 2050 for a case study of nineteen cities across seven countries: Cyprus, Finland, Greece, Israel, Portugal, Slovakia, and Spain, by estimating cooling degree days and hours (CDD and CDH). CDD and CDH are calculated using both fixed and adaptive thermal comfort temperature thresholds for 2020 and 2050, understanding their strengths and weaknesses to assess the effects of warmer temperatures. Results suggest a noticeable average increase in CDD and CDH values, up to double, by using both thresholds for 2050, with a particular interest in northern countries where structural modifications in the building stock and occupants’ behavior should be anticipated. Furthermore, the use of the adaptive thermal comfort threshold shows that the projected temperature increases for 2050 might affect people’s capability to adapt their comfort band (i.e., indoor habitability) as temperatures would be higher than the maximum admissible values for people’s comfort and health.

The rapid trends of urbanization have catastrophic consequences on the ecology of our cities. The large amounts of energy consumption and the reckless exploitation of natural resources is leading to increased emissions of ozone depleting gases and carbon dioxide emissions, which are polluting our planet and enhancing the effects of global warming. This paper will present the bioclimatic approach in achieving a smart urban isle as a basic unit for the development of sustainable cities of the EU ERANET project “Smart bioclimatic low-carbon urban areas as innovative energy isles in the sustainable city” (SUI). It will outline the project and demonstrate the approach of achieving bioclimatic urban isles through the Cyprus case study. The main aim of the SUI project is to develop sustainable cities through balancing locally the energy systems. Thus, the project aspires to move forward with the urban energy and CO2 reduction. The study will focus on the bioclimatic approach, which is one of the three cornerstone procedures (Bioclimatic design, Smart Grids and Management Platform) on which the project is based. It will exemplify how the various aspects of the bioclimatic design and the utilization of the beneficial aspects of the surrounding environment are exploited and applied on defined urban isles, as a basic unit of the city.