Quantitative analysis of energy-efficiency strategy on CO2 emissions in the residential sector in Japan – Case study of Iwate prefecture

Bioclimatic housing design is regarded as an important pillar towards energy policies. Additionally, it is closely affiliated with the performance of energy efficiency of buildings. The citizens’ views and their adaptation to energy saving practices can be utilized as an important data base in order to design, improve and properly manage urbanization and environmental challenges in the residential sector. For the capitalization of the citizens’ views in Orestiada, the newest city in Greece, simple random sampling was applied on data that were collected via personal interviews and with the use of a structured questionnaire. Reliability and factor analyses were applied for the data processing along with hierarchical log-linear analysis. The latter was utilized for the statistical clustering of citizens into given distinct groups—clusters, arising by factor analysis. The main findings revealed that the citizens are merely aware of bioclimatic principles, while only a small percentage of 28.8% adopts some primary bioclimatic disciplines. Conclusively, it should be noted that there is a need for effective planning towards empowerment on energy efficiency in the residential sector of the city. Notwithstanding, it should not be disregarded the need for the incorporation of conceptual frameworks in urban planning. This is an approach that prerequisites public awareness and the stakeholders’ participation in decision making processes.

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Energy Efficiency Enhancement for Residential Sector: Case Study of Lighting in Iraq

AL-Rafdain Engineering Journal (AREJ) ◽

10.33899/rengj.2020.127999.1056 ◽

2021 ◽

Vol 26 (1) ◽

pp. 53-62

Author(s):

Yasir Ameen ◽

Omar Al-Yozbaky ◽

Majid Al-Hafidh

Keyword(s):

Energy Efficiency ◽

Efficiency Enhancement ◽

Residential Sector

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Residential Energy-Related CO2 Emissions in China’s Less Developed Regions: A Case Study of Jiangxi

Sustainability ◽

10.3390/su12052000 ◽

2020 ◽

Vol 12 (5) ◽

pp. 2000 ◽

Cited By ~ 1

Author(s):

Yong Yang ◽

Junsong Jia ◽

Chundi Chen

Keyword(s):

Co2 Emissions ◽

Energy Demand ◽

Dominant Role ◽

Energy Structure ◽

Residential Energy ◽

Rural Regions ◽

Residential Sector ◽

Per Capita ◽

The Difference

The residential sector is the second-largest consumer of energy in China. However, little attention has been paid to reducing the residential CO2 emissions of China’s less developed or undeveloped regions. Taking Jiangxi as a case study, this paper thus aims at fully analyzing the difference of the residential energy-related CO2 emissions between urban and rural regions based on the Log-Mean Divisia Index (LMDI) and Tapio decoupling model. The main results are showed as follows: (1) Since 2008, residential energy-related CO2 emissions have increased rapidly in both urban and rural Jiangxi. From 2000 to 2017, the residential energy-related CO2 emissions per capita in rural regions rapidly increased and exceeded that in urban regions after 2015. Furthermore, the residential energy structures had become multiple in both urban and rural regions, but rural regions still had room to optimize its energy structure. (2) Over the study period, consumption expenditure per capita played the dominant role in increasing the residential energy-related CO2 emissions in both urban and rural regions, followed by energy demand and energy structure. Energy price had the most important effect on decreasing the urban and rural residential energy-related CO2 emissions, followed by the carbon emission coefficient. However, urbanization increased the urban residential energy-related CO2 emissions but decreased the CO2 emissions in rural regions. Population made marginal and the most stable contribution to increase the residential energy-related CO2 emissions both in urban and rural regions. (3) Overall, the decoupling status showed the weak decoupling (0.1) and expansive negative decoupling (1.21) in urban and rural regions, respectively.

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How to Prioritize Energy Efficiency Intervention in Municipal Public Buildings to Decrease CO2 Emissions? A Case Study from Italy

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17124434 ◽

2020 ◽

Vol 17 (12) ◽

pp. 4434

Author(s):

Filomena Pietrapertosa ◽

Marco Tancredi ◽

Michele Giordano ◽

Carmelina Cosmi ◽

Monica Salvia

Keyword(s):

Energy Efficiency ◽

Co2 Emissions ◽

Energy Savings ◽

Action Plan ◽

The European Union ◽

Public Buildings ◽

Building Stock ◽

End Use ◽

Climate Crisis

The European Union 2050 climate neutrality goal and the climate crisis require coordinated efforts to reduce energy consumption in all sectors, and mainly in buildings greatly affected by the increasing temperature, with relevant CO2 emissions due to inefficient end-use technologies. Moreover, the old building stock of most countries requires suited policies to support renovation programs aimed at improving energy performances and optimize energy uses. A toolbox was developed in the framework of the PrioritEE project to provide policy makers and technicians with a wide set of tools to support energy efficiency in Municipal Public Buildings. The toolbox, available for free, was tested in the partners’ communities, proving its effectiveness. The paper illustrates its application to the Potenza Municipality case study in which the online calculator DSTool (the core instrument of the toolbox) was utilized to select and prioritize the energy efficiency interventions in public buildings implementable in a three-year action plan in terms of costs, energy savings, CO2 emissions’ reduction and return on investments. The results highlight that improvements in the building envelopes (walls and roofs), heating and lighting and photovoltaic systems allow reducing CO2 emission approximately 644 t/year and saving about 2050 MWh/year with a total three-year investment of 1,728,823 EUR.

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