scholarly journals CONCEPT OF EFFICIENT REDUCING GREENHOUSE GAS EMISSIONS IN UKRAINE’S ENERGY SECTOR

2019 ◽  
Vol 2019 (6) ◽  
pp. 3-17
Author(s):  
Oleksandr SERDIUK ◽  

Ukraine’s energy system, namely the sector of thermal energy, is the country’s largest producer of greenhouse gas emissions nowadays. Given the significant contribution of Ukraine’s energy sector to the nationwide producing greenhouse gas emissions, the need for its restructuring is becoming increasingly obvious from an economic point of view. However, the lack of economic incentives for private parties and the limited financial capacity of the public sector hamper the implementation of appropriate measures. Given that the natural economic incentives for reducing greenhouse gas emissions from the private sector in the energy sector (80% of the thermal energy sector belongs to the private sector) can only arise in the event of a change in the energy market situation, this raises the question of how to effectively use the limited financial resources of the state for such needs. In view of this, the concept of reducing greenhouse gas emissions in Ukraine’s energy sector is developed, which should be implemented in three stages: (i) the optimization of electricity generation at the TPPs by bringing the load to the maximum and relatively efficient levels, at which the largest amount of energy will be generated per unit of greenhouse gas emissions; (ii) clustering of TPPs into two groups by the performance indicators of operation: the identifying relatively efficient TPPs to be modernized; (iii) ranking of relatively inefficient TPPs by priority for replacement with renewable energy sources. To identify the enterprises in relation to which the proposed measures should be applied, the software is developed, which will determine the relevant information by analyzing the data characterizing the activity of enterprises.

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5227
Author(s):  
Laura Stößel ◽  
Leila Poddie ◽  
Tobias Spratte ◽  
Ralf Schelenz ◽  
Georg Jacobs

The pressure on the energy sector to reduce greenhouse gas emissions is increasing. In the light of current greenhouse gas emissions in the energy sector, further expansion of renewable energy sources (RES) is inevitable to reduce emissions and reach the climate goals. This study aims at investigating structural characteristics of German counties regarding advantages for self-sufficient power systems based on RES. The modelling of the power sector based on RES is coupled with a cluster analysis in order to draw a large-scale conclusion on structural characteristics beneficial or obstructive for municipal energy systems. Ten clusters are identified with the Ward algorithm in a hierarchical-agglomerative method. The results underline a further need for RES expansion projects in order to close the gap between supply and demand. Only then, bioenergy can effectively balance the offset and support a truly self-sufficient local energy system. While the model results indicate that the majority of the counties are suitable for further expansion, this suitability is to be questioned in cluster 10. High population density is a critical characteristic, because with it come both a high demand and limited sites for further RES expansion projects.


2016 ◽  
Vol 59 ◽  
pp. 1317-1325 ◽  
Author(s):  
A.N. Khondaker ◽  
Md. Arif Hasan ◽  
Syed Masiur Rahman ◽  
Karim Malik ◽  
Md Shafiullah ◽  
...  

2019 ◽  
Vol 01 (02) ◽  
pp. 1950006
Author(s):  
ARSHAD RAZA ◽  
RAOOF GHOLAMI ◽  
MINOU RABIEI ◽  
VAMEGH RASOULI ◽  
REZA REZAEE

Pakistan is ranked in the 7th position among the affected countries by climate changes. Although many studies have been done on the impacts of climate change in Pakistan, little attention has been given to the need for an energy transition and reduction of greenhouse gas emissions in this country. This study highlights the needs of the national energy transition in Pakistan to reduce the greenhouse gas emissions. Considering the fact that natural gas has lower greenhouse gas emission than coal or oil, Pakistan needs to shift its energy system towards natural gas in the near future. Meanwhile, Pakistan government should take key measures and revise energy policies to support such energy transition by making large gas discoveries, increasing energy conversion systems, and implementing renewable and sustainable energies.


2020 ◽  
Vol 10 (3) ◽  
pp. 837
Author(s):  
Matteo Prussi

Anthropogenic greenhouse gas emissions are dramatically influencing the environment, and research is strongly committed in proposing alternatives, mainly based on renewable energy sources [...]


2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Christian Klemm ◽  
Frauke Wiese

Abstract Background Urban energy systems are responsible for 75% of the world’s energy consumption and for 70% of the worldwide greenhouse gas emissions. Energy system models are used to optimize, benchmark and compare such energy systems with the help of energy sustainability indicators. We discuss several indicators for their basic suitability and their response to changing boundary conditions, system structures and reference values. The most suitable parameters are applied to four different supply scenarios of a real-world urban energy system. Results There is a number of energy sustainability indicators, but not all of them are suitable for the use in urban energy system optimization models. Shortcomings originate from the omission of upstream energy supply chains (secondary energy efficiency), from limited capabilities to compare small energy systems (energy productivity), from excessive accounting expense (regeneration rate), from unsuitable accounting methods (primary energy efficiency), from a questionable impact of some indicators on the overall system sustainability (self-sufficiency), from the lack of detailed information content (share of renewables), and more. On the other hand, indicators of absolute greenhouse gas emissions, energy costs, and final energy demand are well suitable for the use in optimization models. However, each of these indicators only represents partial aspects of energy sustainability; the use of only one indicator in the optimization process increases the risk that other important aspects will deteriorate significantly, eventually leading to suboptimal or even unrealistic scenarios in practice. Therefore, multi-criteria approaches should be used to enable a more holistic optimization and planning of sustainable urban energy systems. Conclusion We recommend multi-criteria optimization approaches using the indicators of absolute greenhouse gas emissions, absolute energy costs, and absolute energy demand. For benchmarking and comparison purposes, specific indicators should be used and therefore related to the final energy demand, respectively, the number of inhabitants. Our example scenarios demonstrate modeling strategies to optimize sustainability of urban energy systems.


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