scholarly journals Key Performance Indicators for an Energy Community Based on Sustainable Technologies

2021 ◽  
Vol 13 (16) ◽  
pp. 8789
Author(s):  
Giovanni Bianco ◽  
Barbara Bonvini ◽  
Stefano Bracco ◽  
Federico Delfino ◽  
Paola Laiolo ◽  
...  
Keyword(s):  
Performance Indicators ◽  
Urban Areas ◽  
High Performance ◽  
Power Plants ◽  
New Technologies ◽  
Storage Systems ◽  
Clean Energy ◽  
Key Performance Indicators ◽  
Energy Performance ◽  
Green Energy

As reported in the “Clean energy for all Europeans package” set by the EU, a sustainable transition from fossil fuels towards cleaner energy is necessary to improve the quality of life of citizens and the livability in cities. The exploitation of renewable sources, the improvement of energy performance in buildings and the need for cutting-edge national energy and climate plans represent important and urgent topics to be faced in order to implement the sustainability concept in urban areas. In addition, the spread of polygeneration microgrids and the recent development of energy communities enable a massive installation of renewable power plants, high-performance small-size cogeneration units, and electrical storage systems; moreover, properly designed local energy production systems make it possible to optimize the exploitation of green energy sources and reduce both energy supply costs and emissions. In the present paper, a set of key performance indicators is introduced in order to evaluate and compare different energy communities both from a technical and environmental point of view. The proposed methodology was used in order to assess and compare two sites characterized by the presence of sustainable energy infrastructures: the Savona Campus of the University of Genoa in Italy, where a polygeneration microgrid has been in operation since 2014 and new technologies will be installed in the near future, and the SPEED2030 District, an urban area near the Campus where renewable energy power plants (solar and wind), cogeneration units fed by hydrogen and storage systems are planned to be installed.

scholarly journals «GREEN» ENERGY: FEATURES AND PROSPECTS OF DEVELOPMENT IN UKRAINE

2021 ◽  
Author(s):  
Natalka Boichuk ◽  
Mariia Kotsiubailo
Keyword(s):  
Energy Balance ◽  
Alternative Energy ◽  
Power Plants ◽  
New Technologies ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
Green Energy ◽  
Energy Sources ◽  
Alternative Energy Sources

The article is devoted to the study of the development of «green» energy in Ukraine. Extraction of non-renewable resources reduces our reserves, and using in the process of production and consumption leads to global warming. Further development of «green» energy will reduce the problems associated with environmental pollution and ensure consumer demand for clean energy at low prices. The article analyzes in details the current state of «green» energy of the country, considers promising opportunities for investment in the industry by Ukrainian and foreign entrepreneurs, which will create and implement new technologies in production, modernize obsolete enterprises. The main problems of using alternative energy sources are highlighted, the prospects for the development of «green» energy are determined, the possibilities and expediency of the transition to ecological types of energy are considered, taking into account the features of the country's economy. The article considers and analyzes the energy balance of the state, which is significantly dominated by the use of nuclear fuel, coal and gas. The use of modern and advanced technologies in the use of renewable energy sources will increase the share of clean energy in the energy balance of the country. The chronology of development of solar power plants in Ukraine is considered. It is noted that due to scientific and technological progress, reduction of prices for solar power plant equipment, «green» tariff capacity of generating alternative energy facilities will continue to grow. The volumes of energy production, which is produced with the help of renewable sources, are analyzed, the number of enterprises that receive income from the sale of electricity at the «green» tariff is considered. A comparative analysis of the size of the «green» tariff in Ukraine and European countries, the prospects for solving existing problems, proposed measures to fully disclose the potential use of alternative energy sources. The positive aspects of the use of alternative energy are analyzed; the role of the country in the process of implementing an effective energy strategy, creating an electricity market and the country's transition to a carbon-neutral economy is analyzed.

The Potential of Descriptive Building Specifications as an Alternative to Detailed Normative Calculations

2019 ◽  
Vol 887 ◽  
pp. 164-171
Author(s):  
Marija Marković ◽  
Ulrich Pont ◽  
Ardeshir Mahdavi
Keyword(s):  
Performance Indicators ◽  
Key Performance Indicators ◽  
Energy Performance ◽  
Building Envelope ◽  
Building Performance ◽  
The Past ◽  
Comprehensive Knowledge ◽  
Master Thesis ◽  
Relevant Calculation ◽  
Calculation Procedures

Energy performance calculations are stipulated by law in most European countries. Thereby, different calculation schemes have been developed in the past years in different countries. The physical processes in buildings were simplified in terms of normative calculation routines in most of these schemes. A major idea behind these simplifications was to enable different stakeholders (practitioners, engineers, and architects) to issue energy certificates without being simulation experts. Moreover, the simplifications needed to be described thoroughly in corresponding guidelines to ensure and facilitate the comparability of the energy performance of different buildings. However, neither of these objectives can be considered to be fully met. Regarding the former, the normative calculation procedures increased in complexity in the past years, so that the issuing of energy certificates requires not only the stakeholder’s expertise but also a comprehensive knowledge of the standards that form the calculation method. Regarding the latter, recent research efforts revealed that many guidelines do not fully cover every aspect of the calculation procedures and the assumptions regarding required input data. Thus, the comparability of energy certificates has to be strongly questioned, as a number of relevant calculation parameters are dependent on the interpretation of the corresponding issuer.Given this background, alternative approaches to building performance evaluation would be of interest. Previous approaches by different researchers suggested so called prescriptive indicators, which can be derived by basic building data (for instance, geometry and thermal quality of the building envelope components). This contribution is based on this concept. In the framework of a master thesis, a number of prescriptive indicators were considered. These indicators were derived for a set of sample buildings. In a parallel effort, energy certificates (encompassing Key Performance Indicators KPIs) were calculated for the sample buildings. It is clear that the prescriptive indicators cannot act as a 1:1 replacement for KPIs in terms of a numeric value. However, their usefulness can be expressed by the relation of the prescriptive indicator and the corresponding KPIs of a building. Thus, the results of the described calculation efforts were ranked. Subsequently, the lists of buildings ranked by the different indicators were compared in order to identify prescriptive indicators, which result in the same or at least similar ranking as the normative key performance indicators. Within this contribution, the suggested prescriptive indicators, the sample buildings, and the results of the analysis are presented and discussed.

Designing graphene-wrapped nanoporous CuCo2O4 hollow spheres electrodes for high-performance asymmetric supercapacitors

2017 ◽  
Vol 5 (27) ◽  
pp. 14301-14309 ◽  
Author(s):  
S. Kamari Kaverlavani ◽  
S. E. Moosavifard ◽  
A. Bakouei
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Storage Systems ◽  
Rapid Development ◽  
Hollow Spheres ◽  
Green Energy ◽  
Energy Storage Systems ◽  
Asymmetric Supercapacitors ◽  
Portable Electronics ◽  
Increasing Demand

Increasing demand for green energy storage systems, arising from the rapid development of portable electronics, has triggered tremendous research efforts for designing new or high-performance electrodes.

scholarly journals Establishment of Key Performance Indicators for Green Building Operations Monitoring—An Application to China Case Study

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 976 ◽  
Author(s):  
Jinqiu Li ◽  
Qingqin Wang ◽  
Hao Zhou
Keyword(s):  
Environmental Quality ◽  
Performance Indicators ◽  
Green Building ◽  
Key Performance Indicators ◽  
Energy System ◽  
Energy Performance ◽  
Operational Performance ◽  
Indoor Environmental Quality ◽  
Evaluation Standards

Released green building evaluation standards for operation stage include a huge number of indicators, which are very comprehensive and systematic. However, the indicators of these standards are very complicated and a large amount of time and manpower are consumed for their evaluation. To evaluate the operational performance of green buildings more practically and efficiently, some studies collect the operational data for part of the indicators (mainly focusing on building energy performance, indoor environmental quality or occupant satisfaction), which are too rough to evaluate the performance of green building. This paper proposed a total of 27 key performance indicators (KPIs) for green building operations monitoring. The number of proposed indicators is much fewer than the evaluation standards, as well as suitable for long-term monitoring, which can dramatically reduce evaluation time and cost. On the other hand, the indicators involving Outdoor environmental quality, Indoor environmental quality, HVAC system, P&D system, Renewable energy system, Total resource consumption and User behavior, which are more comprehensive and systematic than the conventional monitoring studies for operational performance of green building. Firstly, an indicators library for operations monitoring of green building was established based on relevant standards and literature review in this field. Secondly, “SMART” principle and Delphi method were adopted to select the key performance indicators for green building operations monitoring. Different background experts regarding green building industry were chosen to screen the most relevant, accessible and measurable indicators. Subsequently, two projects in China were selected for case study of key performance indicators proposed in this paper for green building operations monitoring to validate the feasibility and advancement.

scholarly journals A Review of Key Performance Indicators for Building Flexibility Quantification to Support the Clean Energy Transition

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5676
Author(s):  
Girolama Airò Farulla ◽  
Giovanni Tumminia ◽  
Francesco Sergi ◽  
Davide Aloisio ◽  
Maurizio Cellura ◽  
...  
Keyword(s):  
Performance Indicators ◽  
Renewable Energy Sources ◽  
Energy Transition ◽  
Clean Energy ◽  
Key Performance Indicators ◽  
Electric Power System ◽  
Power Grids ◽  
Current Status ◽  
Future Perspective ◽  
The Stability

The transition to a sustainable society and a carbon-neutral economy by 2050 requires extensive deployment of renewable energy sources that, due to the aleatority and non-programmability of most of them, may seriously affect the stability of existing power grids. In this context, buildings are increasingly being seen as a potential source of energy flexibility for the power grid. In literature, key performance indicators, allowing different aspects of the load management, are used to investigate buildings’ energy flexibility. The paper reviews existing indicators developed in the context of theoretical, experimental and numerical studies on flexible buildings, outlining the current status and the potential future perspective. Moreover, the paper briefly reviews the range of grid services that flexible buildings can provide to support the reliability of the electric power system which is potentially challenged by the increasing interconnection of distributed variable renewable generation.

scholarly journals SWEM – GREEN TECHNOLOGY FOR GENERATING FRESH WATER AND ELECTRIC POWER FROM THE ATMOSPHERIC AIR

Neft i gaz ◽  
2020 ◽  
Vol 2 (116) ◽  
pp. 131-139
Author(s):  
A.I. BAZHAL ◽  
◽  
A.M. BARAK ◽  
Keyword(s):  
Fresh Water ◽  
Power Plants ◽  
Eastern China ◽  
Cost Effective ◽  
Clean Energy ◽  
Green Energy ◽  
Green Technology ◽  
Business World ◽  
Water Power ◽  
Water On Mars

Providing fresh water and clean energy to inhabitants of remote villages of Kazakhstan, Ethiopia, Eastern China, other countries and areas where people are living in scarcity of water and energy and often are literally dying from lack of water and food is not a matter of business. It’s a matter of humanity. Making it more economic than any other sources of energy and water is the matter of business. World is spending billions of dollars trying to find water on Mars. Galex invented the most efficient and economical method providing water, power and chance of growing food on lands that was unsuitable for farming due to lack of water. Megapolises like Almaty, Beijing, Mexico City, many others, where people suffer from respiratory diseases, having to inhale air polluted with exhausts from vehicles and power plants, states like Central Kazakhstan, California, Middle East where periodic droughts kill harvests shall no longer be subjects of those problems. Galex has a viable and economic solution to it. SWEM – efficient, cost effective and universal technology for green energy and fresh water production

The Green Energy Fraction Parameter for Solar Thermal Power Systems

Solar Energy ◽  
2004 ◽  
Author(s):  
Aharon Roy
Keyword(s):  
Power Systems ◽  
Power Plants ◽  
Solar Power ◽  
Thermal Power ◽  
Energy Performance ◽  
Green Energy ◽  
Energy Fraction ◽  
Environmental Consequences ◽  
Project Assessment ◽  
Hybrid Power

A new solar power parameter, the green energy fraction is proposed as a useful metric for project assessment. Its concept is elucidated and the application to solar/fuel hybrid power plants is exhibited by numerical illustrations. This parameter is a simple tool for tracking the actual green energy performance of a particular plant. It proves to serve a significant yardstick for evaluating fuel avoidance, hence the environmental consequences of solar hybrid power plants. The green energy fraction provides a summation of the fuel avoidance for the whole system, simple or complex, and allows comparative evaluation between power plants for upright green energy (fuel avoidance), and thus enables standard assessments of various systems on an equal basis. It has both thermodynamic and engineering meaning and signifies one of the essential figures of merit for solar power systems. It should assist R&D management to improve technologies. Green energy entitles substantial financial benefits.

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