Long-Term Integration of Renewable Energy Sources into the European Energy System

Over 90% of Uganda's power is generated from renewable sources. Standardised Implementation Agreements and Power Purchase Agreements create a long-term relationship between Generating Companies and the state-owned off-taker guaranteed by Government. The COVID-19 pandemic and measures to curb the spread of the virus have triggered the scrutiny and application of force majeure (FM) clauses in these agreements. This article reviews the FM clauses and considers their relevance. The authors submit that FM clauses are a useful commercial tool for achieving energy justice by ensuring the continuity of the project, despite the dire effects of the pandemic. Proposals are made for practical considerations for a post-COVID-19 future which provides the continued pursuit of policy goals of promoting renewable energy sources and increasing access to clean energy, thus accelerating just energy transitions.

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The Energy System of an Ecovillage: Barriers and Enablers

Land ◽

10.3390/land10070682 ◽

2021 ◽

Vol 10 (7) ◽

pp. 682

Author(s):

Zita Szabó ◽

Viola Prohászka ◽

Ágnes Sallay

Keyword(s):

Renewable Energy ◽

Spatial Structure ◽

Energy Management ◽

Energy Production ◽

Renewable Energy Sources ◽

Energy System ◽

Energy Sources ◽

Energy Management System ◽

Production And Consumption ◽

Ecologically Sustainable

Nowadays, in the context of climate change, efficient energy management and increasing the share of renewable energy sources in the energy mix are helping to reduce greenhouse gases. In this research, we present the energy system and its management and the possibilities of its development through the example of an ecovillage. The basic goal of such a community is to be economically, socially, and ecologically sustainable, so the study of energy system of an ecovillage is especially justified. As the goal of this community is sustainability, potential technological and efficiency barriers to the use of renewable energy sources will also become visible. Our sample area is Visnyeszéplak ecovillage, where we examined the energy production and consumption habits and possibilities of the community with the help of interviews, literature, and map databases. By examining the spatial structure of the settlement, we examined the spatial structure of energy management. We formulated development proposals that can make the community’s energy management system more efficient.

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Influence of the Share of Renewable Energy Sources on the Level of Energy Security in EECCA Countries

Energies ◽

10.3390/en14040903 ◽

2021 ◽

Vol 14 (4) ◽

pp. 903 ◽

Cited By ~ 1

Author(s):

Ivan Trifonov ◽

Dmitry Trukhan ◽

Yury Koshlich ◽

Valeriy Prasolov ◽

Beata Ślusarczyk

Keyword(s):

Renewable Energy ◽

Energy Security ◽

Structural Characteristics ◽

Renewable Energy Sources ◽

Energy Resource ◽

Energy Sources ◽

Structural Content ◽

High Degree

In this study we aimed to determine the extent to which changes in the share of renewable energy sources, their structural complex, and the level of energy security in Eastern Europe, Caucasus and Central Asia (EECCA) countries in the medium- and long-term are interconnected. The study was performed through modeling and determination of the structural characteristics of energy security in the countries. The methodology of the approach to modeling was based on solving the problem of nonlinear optimization by selecting a certain scenario. For the study, the data of EECCA countries were used. The ability of EECCA countries to benefit from long-term indirect and induced advantages of the transformation period depends on the extent to which their domestic supply chains facilitate the deployment of energy transformation and induced economic activity. This study provides an opportunity to assess the degree of influence of renewable energy sources on the level of energy security of countries in the context of energy resource diversification. The high degree of influence of renewable energy sources on energy security in the EECCA countries has been proven in the implementation of the developed scenarios for its increase. Energy security is growing. At the same time, its level depends not only on an increase in the share of renewable sources but also on the structure of energy resources complex of countries, and the development of various renewable energy sources. Therefore, today the EECCA countries are forced not only to increase the share of renewable energy sources but also to attach strategic importance to the structural content of their energy complex.

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Renewable energy sources in future energy balance of the republic of Kazakhstan

E3S Web of Conferences ◽

10.1051/e3sconf/20185803006 ◽

2018 ◽

Vol 58 ◽

pp. 03006 ◽

Cited By ~ 1

Author(s):

Bekzhan Mukatov ◽

Ravil Khabibullin

Keyword(s):

Renewable Energy ◽

Development Strategy ◽

Large Scale ◽

Renewable Energy Sources ◽

Energy System ◽

Energy Sources ◽

Basic Principles ◽

The World ◽

Main Factors ◽

The Republic

The article describes the main factors determining the development of renewable energy sources in the world. The assessment of the applicability of foreign RES development strategies to Kazakhstan’s energy system has been made. The main tasks facing Kazakhstan’s energy system with large-scale implementation of renewable energy were formulated. On the basis of the analysis and performed calculations recommendations and basic principles have been made on development strategy of renewable energy sources in the Republic of Kazakhstan.

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Analysis of Three Port Full Bridge and Half Bridge DC-DC Converter Interfacing Renewable Energy System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.768.3 ◽

2013 ◽

Vol 768 ◽

pp. 3-8 ◽

Cited By ~ 1

Author(s):

M. Venmathi ◽

R. Ramaprabha

Keyword(s):

Renewable Energy ◽

Power Flow ◽

Pulse Width Modulation ◽

Renewable Energy Sources ◽

Energy System ◽

Energy Sources ◽

Energy Storage Devices ◽

Storage Devices ◽

Conversion Stage ◽

Bidirectional Power Flow

This paper presents the comparative dynamic analysis of full bridge and half bridge three port dc-dc converter topology interfacing the renewable energy sources along with the energy storage devices. The three port converter comprises the active bridge circuit and the three winding transformer. It uses single power conversion stage with high frequency link to control power flow between the batteries, load and the renewable energy sources. The power flow between the ports is controlled by phase shifting the square wave outputs of the active bridges in combination with pulse width modulation (PWM) technique. The analysis reveals that the battery discharges when the source is not sufficient to supply the load and it was charged when the source alone is capable of supplying the load. Hence there is a bidirectional power flow in the storage port when there is a transition in the source.

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Renewable energy sources generation forecasting in aggregated energy system level

10.1109/eeeic/icpseurope51590.2021.9584682 ◽

2021 ◽

Author(s):

Ioannis Panapakidis ◽

Georgios Gousis ◽

Nikolaos Koltsaklis ◽

Athanasios Dagoumas

Keyword(s):

Renewable Energy ◽

Renewable Energy Sources ◽

Energy System ◽

System Level ◽

Energy Sources

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Optimal Municipal Energy System Design and Operation Using Cumulative Exergy Consumption Minimisation

Energies ◽

10.3390/en13010182 ◽

2020 ◽

Vol 13 (1) ◽

pp. 182 ◽

Cited By ~ 1

Author(s):

Lukas Kriechbaum ◽

Thomas Kienberger

Keyword(s):

Renewable Energy ◽

System Design ◽

Power Plants ◽

Renewable Energy Sources ◽

Energy System ◽

Developed Countries ◽

Raw Material ◽

Energy Sources ◽

Variable Renewable Energy Sources ◽

Exergy Consumption

In developed countries like Austria the renewable energy potential might outpace the demand. This requires primary energy efficiency measures as well as an energy system design that enables the integration of variable renewable energy sources. Municipal energy systems, which supply customers with heat and electricity, will play an important role in this task. The cumulative exergy consumption methodology considers resource consumption from the raw material to the final product. It includes the exergetic expenses for imported energy as well as for building the energy infrastructure. In this paper, we determine the exergy optimal energy system design of an exemplary municipal energy system by using cumulative exergy consumption minimisation. The results of a case study show that well a linked electricity and heat system using heat pumps, combined heat power plants and battery and thermal storages is necessary. This enables an efficient supply and also provides the necessary flexibilities for integrating variable renewable energy sources.

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