scholarly journals From Carbon Calculators to Energy System Analysis in Cities

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2307 ◽  
Author(s):  
David Drysdale ◽  
Brian Vad Mathiesen ◽  
Henrik Lund
Keyword(s):  
Renewable Energy ◽  
System Analysis ◽  
Energy Systems ◽  
Energy System ◽  
Analysis Tool ◽  
Low Carbon ◽  
Carbon Reduction ◽  
Reduction Potentials ◽  
Energy System Analysis ◽  
Fuel Demand

Energy systems in cities need to be decarbonized and are becoming more integrated via energy sector coupling. Today, cities often use simple methods to assess their low carbon targets, e.g., carbon calculators, and these methods use annualized carbon reduction potentials. For example, reductions from heat savings in buildings or fuel demand in transport. This is done because it is simple and fast. This paper describes a methodology that goes beyond carbon calculators and assesses highly renewable energy systems. The methodology is carried out for a case city—Sønderborg, Denmark. Using a national 100% renewable energy study and a suitable energy system analysis tool (EnergyPLAN), the method accounts for inter-sector coupling and energy system dynamics. The energy system is assessed by comparing the results from the analysis tool against numerous key sustainability factors for a Smart Energy System. The paper illustrates how the method delivers a sustainable 100% renewable Smart Energy System for Sønderborg, which can be part of the Danish energy system in 2050 based on local resources. The paper discusses the broader applicability of the method within strategic energy planning.

scholarly journals Comparing policy routes for low-carbon power technology deployment in EU – an energy system analysis

Energy Policy ◽  
2017 ◽  
Vol 101 ◽  
pp. 353-365 ◽  
Author(s):  
Sofia Simoes ◽  
Wouter Nijs ◽  
Pablo Ruiz ◽  
Alessandra Sgobbi ◽  
Christian Thiel
Keyword(s):  
System Analysis ◽  
Energy System ◽  
Low Carbon ◽  
Technology Deployment ◽  
Energy System Analysis

scholarly journals Studying Industrial Decarbonisation: Developing an Interdisciplinary Understanding of the Conditions for Transformation in Energy-Intensive Natural Resource-Based Industry

2020 ◽  
Vol 12 (5) ◽  
pp. 2129
Author(s):  
Oscar Svensson ◽  
Jamil Khan ◽  
Roger Hildingsson
Keyword(s):  
Natural Resource ◽  
System Analysis ◽  
Energy System ◽  
Research Approach ◽  
Transformative Change ◽  
Low Carbon ◽  
Multiple Perspectives ◽  
Research Fields ◽  
Energy System Analysis ◽  
Integrated Research

The ambition to keep global warming well below 2 °C above pre-industrial levels, as recognised in the Paris Agreement, implies a reorientation towards low-carbon societal development and, ultimately, the decarbonisation of human societies and economies. While climate policy has been geared towards achieving set emission reduction targets, the decarbonisation of key socioeconomic sectors such as energy-intensive natural resource-based industries (ENRIs) has not yet been sufficiently addressed, neither politically nor in science. Decarbonising the ENRIs is a complex societal problem that will require structural transformation technologically as well as socially. Understanding the conditions for transformative change therefore necessitates integrated knowledge from multiple perspectives of different research fields. In this paper, we examine the potential of combining three different research fields and critically scrutinize the challenges to integration for understanding the conditions for industrial decarbonisation: energy system analysis, sustainability transition research and policy studies. We argue that these perspectives are complementary—a fundamental condition for fruitful integration—but not easily compatible since they are sometimes based on different ontological assumptions. The research fields are in themselves heterogeneous, which poses additional challenges to an integrated research approach. Drawing on experiences from a Swedish research project (GIST2050) on industrial decarbonisation, we suggest a modest approach to integrated research that could progressively develop from multidisciplinary exchange towards more integrated forms of interdisciplinarity by means of cross-disciplinary dialogue and understanding.

Investigation on Optimal Electric Energy Storage Capacity to Maximize Self-Consumption of Photovoltaic System

2021 ◽  
pp. 1-32
Author(s):  
Ruda Lee ◽  
Hyomun Lee ◽  
Dongsu Kim ◽  
Jongho Yoon
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Electric Energy ◽  
Energy Systems ◽  
Energy System ◽  
Measured Data ◽  
Photovoltaic System ◽  
Analysis Tool ◽  
Pv System ◽  
Renewable Energy Systems

Abstract Battery systems are critical factors in the effective use of renewable energy systems because the self-production of electricity by renewables for self-consumption has become profitable for building applications. This study investigates the appropriate capacity of the Battery Energy Storage System (BESS) installed in all-electric zero energy power houses (AEZEPHs). The AEZEPH used for this study is a highly energy-efficient house. Its criteria indicate that all the electrical energy within the home is covered based on the generated electricity from on-site renewable energy systems, including that the annual net site energy use is almost equal to zero. The experiment for measured data of electricity consumed and generated in the buildings is conducted for a year (i.e., Jan. through Dec. 2014). Based on the measured data, patterns of the electricity consumed by the AEZEPH and generated by an on-site renewable energy system (i.e., photovoltaic (PV) system), and BESS's appropriate capacity is then analyzed and evaluated using the EES analysis tool, named Poly-sun. This study indicates that self-consumption can be increased up to 66% when the ESS system is installed and used during operating hours of the PV system. The amount of received electricity during the week tends to be reduced by about two times.

scholarly journals Dynamics of a Dual Offshore Renewable Energy System: Analysis of Wind and Tidal Turbine

2019 ◽  
Author(s):  
T M Al Hajeri
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
System Analysis ◽  
Energy System ◽  
Maximum Energy ◽  
Energy Yield ◽  
Tidal Turbines ◽  
Energy System Analysis ◽  
Tidal Turbine ◽  
Wave Heights

Offshore renewable energy has been showing remarkable growth and acceptable yields over recent years, the concept of this study centres on the idea of connecting a wind turbine to a tidal turbine, where both energy sources may be utilised at any one location for maximum energy yield. AutoCAD and MATHCAD have been used to simulate the aerodynamics and hydrodynamics of the structure. The power generation and risk analysis were also accounted for. The result of a wave spectral analysis effect on tidal turbines is demonstrated in the study for 6 different cases at different mean crossing period, wave heights, and fatigue life. The power generation of 2 bladed wind/tidal turbine versus 3 bladed was calculated. Although 3 bladed turbines have a marginal higher power generation output, this does not reflect the feasibility of the extra percentages of power on the economics.

scholarly journals Low-Carbon Operation of a Multi-Energy System with Hydrogen-Based Vehicle Applications

2021 ◽  
Author(s):  
Jie Mei ◽  
Christopher Lee ◽  
James L. Kirtley
Keyword(s):  
Emission Reduction ◽  
Energy Systems ◽  
Energy System ◽  
Point Of View ◽  
Optimal Scheduling ◽  
Low Carbon ◽  
Carbon Reduction ◽  
Simulation Results ◽  
Operation Cost ◽  
Energy Infrastructures

In order to cope with the challenges of improving energy efficiency, increasing the integration of renewable energy, and achieving carbon emission reduction, multi-energy systems have received more and more attention in recent years and have been developing rapidly. Traditionally, different energy infrastructures are usually scheduled and operated independently, which leads to inefficient use of energy and waste of resources. By integrating into a multi-energy system, different energy infrastructures can be coupled and optimized into one unit. In this article, from a low-carbon point of view, the optimal scheduling of a real multi-energy system with hydrogen-based vehicle applications is proposed. The simulation results show that the proposed optimal scheduling can help quantify the daily operation cost and carbon emissions and achieve considerably operation cost saving and carbon reduction by reasonably arranging and utilizing all the devices in the system.

Investigation on Optimal EES Capacity to Maximize Self-Consumption of PV System With Existing Energy-Efficient Houses in Korea

2021 ◽  
Author(s):  
Ru-Da Lee ◽  
Hyo-Mun Lee ◽  
Dong-Su Kim ◽  
Jong-Ho Yoon
Keyword(s):  
Renewable Energy ◽  
Energy Efficient ◽  
Storage System ◽  
Energy Systems ◽  
Energy System ◽  
High Energy ◽  
Measured Data ◽  
Analysis Tool ◽  
Pv System ◽  
Renewable Energy Systems

Abstract Battery systems are one of key factors in the effective use of renewable energy systems because self-production of electricity by renewables for self-consumption has become profitable for building applications. This study investigates the appropriate capacity of the Battery Energy Storage System (BESS) installed in all electric zero energy power houses (AEZEPHs). The AEZEPH used for this study is a high energy-efficient house, and its criteria indicates that all the electricity energy within the house is covered based on the generated electricity from on-site renewable energy systems, including that the annual net site energy use is almost equal than zero. The AEZEPHs used for this study is located in Daejeon, South Korea, and the experiment for measured data of electricity consumed and generated in the buildings is carried out for a year (i.e., Jan. through Dec. 2014). Based on the measured data, patterns of the electricity consumed by the AEZEPH and generated by an on-site renewable energy system (i.e., photovoltaic (PV) system), and the appropriate capacity of BESS is then analyzed and evaluated using the EES analysis tool, named Poly-sun. Results from this study indicate that the self-consumption can be increased up to 66% when the ESS system is installed and used during operated hours of the PV system, and the amount of received electricity during the week tends to be reduced by about two times.

scholarly journals Moving Toward a Sustainable Energy System: A Case Study of Viken County of Norway

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5912
Author(s):  
Fredrik Ege Abrahamsen ◽  
Sturla Grina Ruud ◽  
Alemayehu Gebremedhin
Keyword(s):  
Renewable Energy ◽  
System Analysis ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Transport Sector ◽  
Energy Sources ◽  
Analysis Tool ◽  
Future Scenarios ◽  
Solar Pv ◽  
The Future

Increasing awareness of climate issues and environmental policy has been a key factor behind the continuous transition of energy systems at different levels. This paper aimed to analyse the energy system of Viken county, located in Norway. An energy system model using the energy system analysis tool EnergyPLAN was developed. Based on the reference year 2018, two future scenarios which focus on changes in the transport sector for the year 2030 and 2050 were designed. Besides changes in the transport sector, the integration of renewable energy sources is considered in the future scenarios. The results of the analysis regarding the future scenario shows substantial CO2 reduction as a result of energy-carrier switching within the transport sector. The integration of new energy sources, in this case, solar PV and wind power, helps to offset increased import dependency. The primary energy supply decrease and the share of renewable energy increases significantly.

scholarly journals Validation of Danish wind time series from a new global renewable energy atlas for energy system analysis

Energy ◽  
2015 ◽  
Vol 93 ◽  
pp. 1074-1088 ◽  
Author(s):  
Gorm B. Andresen ◽  
Anders A. Søndergaard ◽  
Martin Greiner
Keyword(s):  
Time Series ◽  
Renewable Energy ◽  
System Analysis ◽  
Energy System ◽  
Energy System Analysis
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