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According to the European Environment Agency, the agricultural sector consumes around 3% of the total energy consumed in the European Union and specifically 28.8 million tones of oil equivalent in 2016. Although between 2005 and 2016, the final energy consumption in the EU decreased in the fishing, agriculture and forestry sectors by 24.7 % the energy required in this sector is considered to have a significant contribution to the energy related policies of the EU. Greenhouses constitute a major energy consumer of the agricultural sector in the European Union. Although strictly speaking, greenhouses differ from buildings in several ways, such as the construction, the building systems and the use, the principles used to analyse the energy consumption of greenhouses, as well as the strategies to control their energy performance are quite similar with those of the building sector. This study aims to present the recent advancements in the analysis of the energy performance of greenhouses, with a special focus on next generation greenhouses, also known as intelligent greenhouses. The main energy consumption sources in greenhouses, as well as their normalized intensity is presented. State-of-the-art automations to control the energy performance of greenhouses, as well as intelligent systems used to achieve the required thermal conditions in greenhouses, such as automation systems, infrared heating and advanced covering materials are presented. The main challenges of the intelligent greenhouse sector, as well as the requirements for the development of new energy related standards for greenhouses are also discussed. The study concludes with the presentation of the energy performance of a greenhouse, considered as intelligent, of the Department of Agricultural Technology of the Technological Education Institute of Western Greece in Patras, Greece. Detailed data logging of the temperature and indoor conditions of an intelligent greenhouse are analysed and compared with regard to contemporary greenhouses, revealing and quantifying the potentials of this sector in the energy saving strategies of Greece and the EU.

According to the European Environment Agency, the agricultural sector consumes around 3% of the total energy consumed in the European Union and specifically 28.8 million tones of oil equivalent in 2016. Although between 2005 and 2016, the final energy consumption in the EU decreased in the fishing, agriculture and forestry sectors by 24.7 % the energy required in this sector is considered to have a significant contribution to the energy related policies of the EU. Greenhouses constitute a major energy consumer of the agricultural sector in the European Union. Although strictly speaking, greenhouses differ from buildings in several ways, such as the construction, the building systems and the use, the principles used to analyse the energy consumption of greenhouses, as well as the strategies to control their energy performance are quite similar with those of the building sector. This study aims to present the recent advancements in the analysis of the energy performance of greenhouses, with a special focus on next generation greenhouses, also known as intelligent greenhouses. The main energy consumption sources in greenhouses, as well as their normalized intensity is presented. State-of-the-art automations to control the energy performance of greenhouses, as well as intelligent systems used to achieve the required thermal conditions in greenhouses, such as automation systems, infrared heating and advanced covering materials are presented. The main challenges of the intelligent greenhouse sector, as well as the requirements for the development of new energy related standards for greenhouses are also discussed. The study concludes with the presentation of the energy performance of a greenhouse, considered as intelligent, of the Department of Agricultural Technology of the Technological Education Institute of Western Greece in Patras, Greece. Detailed data logging of the temperature and indoor conditions of an intelligent greenhouse are analysed and compared with regard to contemporary greenhouses, revealing and quantifying the potentials of this sector in the energy saving strategies of Greece and the EU.

According to the European Environment Agency, the agricultural sector consumes around 3% of the total energy consumed in the European Union and specifically 28.8 million tones of oil equivalent in 2016. Although between 2005 and 2016, the final energy consumption in the EU decreased in the fishing, agriculture and forestry sectors by 24.7 % the energy required in this sector is considered to have a significant contribution to the energy related policies of the EU. Greenhouses constitute a major energy consumer of the agricultural sector in the European Union. Although strictly speaking, greenhouses differ from buildings in several ways, such as the construction, the building systems and the use, the principles used to analyse the energy consumption of greenhouses, as well as the strategies to control their energy performance are quite similar with those of the building sector. This study aims to present the recent advancements in the analysis of the energy performance of greenhouses, with a special focus on next generation greenhouses, also known as intelligent greenhouses. The main energy consumption sources in greenhouses, as well as their normalized intensity is presented. State-of-the-art automations to control the energy performance of greenhouses, as well as intelligent systems used to achieve the required thermal conditions in greenhouses, such as automation systems, infrared heating and advanced covering materials are presented. The main challenges of the intelligent greenhouse sector, as well as the requirements for the development of new energy related standards for greenhouses are also discussed. The study concludes with the presentation of the energy performance of a greenhouse, considered as intelligent, of the Department of Agricultural Technology of the Technological Education Institute of Western Greece in Patras, Greece. Detailed data logging of the temperature and indoor conditions of an intelligent greenhouse are analysed and compared with regard to contemporary greenhouses, revealing and quantifying the potentials of this sector in the energy saving strategies of Greece and the EU.

According to the European Environment Agency, the agricultural sector consumes around 3% of the total energy consumed in the European Union and specifically 28.8 million tones of oil equivalent in 2016. Although between 2005 and 2016, the final energy consumption in the EU decreased in the fishing, agriculture and forestry sectors by 24.7 % the energy required in this sector is considered to have a significant contribution to the energy related policies of the EU. Greenhouses constitute a major energy consumer of the agricultural sector in the European Union. Although strictly speaking, greenhouses differ from buildings in several ways, such as the construction, the building systems and the use, the principles used to analyse the energy consumption of greenhouses, as well as the strategies to control their energy performance are quite similar with those of the building sector. This study aims to present the recent advancements in the analysis of the energy performance of greenhouses, with a special focus on next generation greenhouses, also known as intelligent greenhouses. The main energy consumption sources in greenhouses, as well as their normalized intensity is presented. State-of-the-art automations to control the energy performance of greenhouses, as well as intelligent systems used to achieve the required thermal conditions in greenhouses, such as automation systems, infrared heating and advanced covering materials are presented. The main challenges of the intelligent greenhouse sector, as well as the requirements for the development of new energy related standards for greenhouses are also discussed. The study concludes with the presentation of the energy performance of a greenhouse, considered as intelligent, of the Department of Agricultural Technology of the Technological Education Institute of Western Greece in Patras, Greece. Detailed data logging of the temperature and indoor conditions of an intelligent greenhouse are analysed and compared with regard to contemporary greenhouses, revealing and quantifying the potentials of this sector in the energy saving strategies of Greece and the EU.

The construction industry, contributing to about 9% of the European Union's GDP, has played a significant influential role in the development of the energy strategy of Europe and is also anticipated to be an important contributor in its successful implementation (EC, 2016). Holistic sustainability assessment tools that are able to evaluate and optimise the environmental performance of construction materials and buildings are considered a key for the development of advanced building designs and use of sustainable building materials and elements and green energy- efficient systems that will raise high the sustainability level of the European built environment. The aim of this work is the thorough explanation of the standardised LCA methodology, and the introduction of the approach of EcoHestia, a comprehensive building sustainability assessment tool. In view of that, the current legislation addressing the construction industry, as well as the state-of-the- art Life Cycle Assessment (LCA) tools that are used for the sustainability assessment and optimisation of construction materials and buildings are also presented. Furthermore, through the employment of EcoHestia, the environmental impact of a case study building is defined, also providing a detailed breakdown of the contribution of each construction material in the overall environmental performance of the building. The analysis of the results has not only determined on the construction materials of the building that are most harmful to the natural resources and the environment, but also showcased the effectiveness and added value of utilizing this approach in moving forward towards a more sustainable green building sector.

The construction industry, being the backbone of the European economy, has played a significant influential role in the development of the energy strategy of Europe and is also anticipated to be an important contributor in its successful implementation. Holistic sustainability assessment tools that are able to evaluate and optimise the environmental performance of construction materials and buildings are considered a key for the development of advanced building designs and use of sustainable building materials and elements and green energy- efficient systems that will raise high the sustainability level of the European built environment. The aim of this work is to present the current legislation addressing the construction industry, as well as the state-of-the- art Life Cycle Assessment (LCA) tools that are used for the sustainability assessment and optimisation of construction materials and buildings. In view of that, the standardised LCA methodology, and the approach of EcoHestia, a comphrehensive building sustainability assessment tool, are discussed. Through the employment of EcoHestia, the environmental impact of a case study building is defined, also providing a detailed breakdown of the contribution of each construction material in the overall environmental performance of the building. The analysis of the results has not only determined on the construction materials of the building that are most harmful to the natural resources and the environment, but also showcased the effectiveness and added value of utilizing this approach in moving forward towards a more sustainable green building sector.DOI: http://dx.doi.org/10.5755/j01.sace.16.3.16172

Financial supporting schemes for the energy upgrading of the building sector in Europe constitute one of the major policies of the European Union (EU). Since the beginning of the 2000s, dozens of funding programs and initiatives have been announced by the European Commission (EC). It is a fact that the majority of these policies have borne fruit, as the metrics on both energy savings in the building sector and the promotion of renewable energy in the built environment have turned the EU into a global pioneer. This paper attempts to give a brief overview of the main policy and financial tools for the energy upgrading of the built environment in Europe. Emphasis is placed on three major mechanisms, which concern different-scale projects: crowdfunding projects, public-private co-financing projects, and large-scale projects funded by financial institutions such as European Investment Bank (EIB). Reference is also made to recently implemented EU funded research programs in this field. This work aspires to constitute a reference study for future research activities in the field of financial supporting schemes for energy upgrading of buildings in Europe.

Financial supporting schemes for the energy upgrading of the building sector in Europe constitute one of the major policies of the European Union (EU). Since the beginning of the 2000s, dozens of funding programs and initiatives have been announced by the European Commission (EC). It is a fact that the majority of these policies have borne fruit, as the metrics on both energy savings in the building sector and the promotion of renewable energy in the built environment have turned the EU into a global pioneer. This paper attempts to give a brief overview of the main policy and financial tools for the energy upgrading of the built environment in Europe. Emphasis is placed on three major mechanisms, which concern different-scale projects: crowdfunding projects, public-private co-financing projects, and large-scale projects funded by financial institutions such as European Investment Bank (EIB). Reference is also made to recently implemented EU funded research programs in this field. This work aspires to constitute a reference study for future research activities in the field of financial supporting schemes for energy upgrading of buildings in Europe.

Financial supporting schemes for the energy upgrading of the building sector in Europe constitute one of the major policies of the European Union (EU). Since the beginning of the 2000s, dozens of funding programs and initiatives have been announced by the European Commission (EC). It is a fact that the majority of these policies have borne fruit, as the metrics on both energy savings in the building sector and the promotion of renewable energy in the built environment have turned the EU into a global pioneer. This paper attempts to give a brief overview of the main policy and financial tools for the energy upgrading of the built environment in Europe. Emphasis is placed on three major mechanisms, which concern different-scale projects: crowdfunding projects, public-private co-financing projects, and large-scale projects funded by financial institutions such as European Investment Bank (EIB). Reference is also made to recently implemented EU funded research programs in this field. This work aspires to constitute a reference study for future research activities in the field of financial supporting schemes for energy upgrading of buildings in Europe.

Financial supporting schemes for the energy upgrading of the building sector in Europe constitute one of the major policies of the European Union (EU). Since the beginning of the 2000s, dozens of funding programs and initiatives have been announced by the European Commission (EC). It is a fact that the majority of these policies have borne fruit, as the metrics on both energy savings in the building sector and the promotion of renewable energy in the built environment have turned the EU into a global pioneer. This paper attempts to give a brief overview of the main policy and financial tools for the energy upgrading of the built environment in Europe. Emphasis is placed on three major mechanisms, which concern different-scale projects: crowdfunding projects, public-private co-financing projects, and large-scale projects funded by financial institutions such as European Investment Bank (EIB). Reference is also made to recently implemented EU funded research programs in this field. This work aspires to constitute a reference study for future research activities in the field of financial supporting schemes for energy upgrading of buildings in Europe.

Financial supporting schemes for the energy upgrading of the building sector in Europe constitute one of the major policies of the European Union (EU). Since the beginning of the 2000s, dozens of funding programs and initiatives have been announced by the European Commission (EC). It is a fact that the majority of these policies have borne fruit, as the metrics on both energy savings in the building sector and the promotion of renewable energy in the built environment have turned the EU into a global pioneer. This paper attempts to give a brief overview of the main policy and financial tools for the energy upgrading of the built environment in Europe. Emphasis is placed on three major mechanisms, which concern different-scale projects: crowdfunding projects, public-private co-financing projects, and large-scale projects funded by financial institutions such as European Investment Bank (EIB). Reference is also made to recently implemented EU funded research programs in this field. This work aspires to constitute a reference study for future research activities in the field of financial supporting schemes for energy upgrading of buildings in Europe.