scholarly journals Environmental Impact of Energy Systems Integrated with Electrochemical Accumulators and Powered by Renewable Energy Sources in a Life-Cycle Perspective

2021 ◽  
Vol 11 (6) ◽  
pp. 2770
Author(s):  
Anna Stoppato ◽  
Alberto Benato ◽  
Francesco De Vanna
Keyword(s):  
Renewable Energy ◽  
Life Cycle ◽  
Environmental Impact ◽  
Energy Production ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Energy Sources ◽  
Renewable Sources ◽  
Life Cycle Perspective

The aim of this study is to assess the environmental impact of storage systems integrated with energy plants powered by renewable sources. Stationary storage systems proved to be a valid solution for regulating networks, supporting frequency, and managing peaks in electricity supply and demand. Recently, their coupling with renewable energy sources has been considered a strategic means of exploiting their high potential since it permits them to overcome their intrinsic uncertainty. Therefore, the storage systems integration with distributed generation can improve the performance of the networks and decrease the costs associated with energy production. However, a question remains regarding the overall environmental sustainability of the final energy production. Focusing on electrochemical accumulators, the problems mainly concern the use of heavy metals and/or impacting chemical components of storage at the center of environmental hazard debates. In this paper, an environmental assessment from a life-cycle perspective of the hybrid energy systems powered by fossil and renewable sources located on two non-interconnected minor islands is presented. Existing configurations are compared with new ones obtained with the addition of batteries for the exploitation of renewable energy. The results show that, for batteries, the assembly phase, including raw material extraction, transport, and assembly, accounts for about 40% of the total, while the remaining part is related to end-of-life processes. The reuse and recycling of the materials have a positive effect on overall impacts. The results also show that the overall impact is strongly related to the actual energy mix of the place where batteries are installed, even if it is usually lower than that of the solution without the batteries. The importance of a proper definition of the functional unit in the analysis is also emphasized in this work.

ENERGY PRODUCTION AND CONSUMPTION FROM RENEWABLE SOURCES IN POLAND AND 28 COUNTRIES OF THE EUROPEAN UNION

2017 ◽  
Vol XIX (2) ◽  
pp. 263-269
Author(s):  
Paulina Trębska ◽  
Arkadiusz Gromada
Keyword(s):  
European Union ◽  
Renewable Energy ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
The European Union ◽  
Renewable Sources ◽  
World Energy ◽  
Production And Consumption ◽  
Structure Of Production

The purpose of this article is to present the changes in the structure of production and consumption of energy from renewable energy sources in Poland and in the European Union. Renewable energy sources account for only about 16% of world energy production. This situation, however, from year to year changes. Prym in the use of energy from renewable sources leads the European Union, which has set itself an ambitious target that by 2020, 20% of the energy extracted from the green renewable energy sources.

scholarly journals LEVEL OF ENERGY SUPPLY OF ANIMAL FARMS FROM USING BIOGAS

2021 ◽  
pp. 100-112
Author(s):  
Mykola Stadnik ◽  
Andrii Shtuts ◽  
Oleksandr Pylypenko
Keyword(s):  
Renewable Energy ◽  
Energy Supply ◽  
Energy Production ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Raw Material ◽  
Energy Sources ◽  
Industrial Complex ◽  
Livestock Waste ◽  
Renewable Sources

Ukraine has untapped potential for the production of own energy from renewable sources - processing of livestock waste (animal manure and bird droppings) with the formation of biogas, which can then be used to produce electricity, heat or fuel - analogues of natural gas (methane) (in particular, for own needs of farms). Currently in Ukraine, the generation of large amounts of waste on industrial farms is an environmental problem that needs to be addressed. Recycling livestock waste to generate biogas will partially solve environmental problems, as well as benefit from decentralized renewable energy production or fuel production. The role of renewable energy sources in energy production is constantly growing and now the issue of increasing the share of renewable sources in the energy balance of each country is relevant. In the supply of primary energy, the share of renewable energy accounts for 13% worldwide. Of these, biomass accounts for 10%, or 258 million tons per year, ie in the world biomass provides the largest share of energy supply from renewable sources. Domestic agricultural enterprises are significant consumers of fuel and energy resources, so they face the objective need to use alternative energy sources, including biofuels and the introduction of innovative energy-saving technologies. Biogas production is an efficient and attractive investment technology, due to the presence of significant raw material potential, favorable climatic and other. However, the level of introduction of this type of energy in the agro-industrial complex is insufficient, which is due to a number of issues, including insufficient level of practical recommendations for choosing power generators, their number, modes of operation taking into account daily energy consumption schedule, load and optimal efficiency. installations while providing autonomous power supply of the enterprise. This paper determines the level of energy supply of livestock farms through the use of biogas plants as a source of energy used for livestock waste.

scholarly journals Life Cycle Assessment (LCA) of Environmental and Energy Systems

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5892
Author(s):  
Luca Ciacci ◽  
Fabrizio Passarini
Keyword(s):  
Life Cycle Assessment ◽  
Renewable Energy ◽  
Life Cycle ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Energy Generation ◽  
Energy Sources ◽  
Green Technologies ◽  
And Storage

The transition towards renewable energy sources and “green” technologies for energy generation and storage is expected to mitigate the climate emergency in the coming years [...]

Implеmеntаciја i rаzvој prаvilа zа priklјučеnjе gеnеrаtоrskih јеdinicа kоје su prеkо invеrtоrа pоvеzаnе nа mrеžu u Nemačkoj

2021 ◽  
Vol XXIII (4) ◽  
pp. 59-63
Author(s):  
Stаnkо Јаnkоvić ◽  
Bојаn Ivаnоvić
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
Production Management ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Energy Sources ◽  
Renewable Sources ◽  
Technical Requirements ◽  
The Stability ◽  
Technical Solutions

The authors review the development of unconventional power generation units in Germany in the last 10 years with a view to possible scenarios in 2035 and 2040. The dynamic development of production from renewable energy sources led to the fact that in some parts of Germany the plan for the production of electricity from renewable sources for 2025 was reached in 2011. Bearing in mind that about 97% of all renewable energy production units are connected to distribution networks, the question of operational production management arises. The paper presents technical solutions for the management of production from renewable sources, as well as the necessary technical requirements for the connection of generator units that are connected to the grid via inverters in order to preserve the stability of the power system.

scholarly journals The necessity of storage technology development for unpredictable energy sources

2021 ◽  
Vol 342 ◽  
pp. 04009
Author(s):  
Maria Daniela Stochitoiu ◽  
Ilie Utu ◽  
Leon Pana
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Energy Production ◽  
Technology Development ◽  
Storage Systems ◽  
Energy System ◽  
Energy Sources ◽  
Renewable Sources ◽  
Storage Technology ◽  
New Energy

The renewable energy is more and more used and represents a higher and higher percentage in the world’s total energy production. The reliability of the renewable sources proves to be less predictable than the conventional ones. The need of new energy storage systems becomes imperative, and when used altogether with renewable sources, they improve the predictability of those sources, thus making possible their use in the energy system market.

Clean Energy, a Sine Qua Non Condition for Sustainable Development

2018 ◽  
Vol 4 (5) ◽  
pp. 49-58
Author(s):  
Georgeta Soava ◽  
Anca Mehedintu ◽  
Mircea Raduteanu
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
Primary Energy ◽  
Energy Sources ◽  
Analysis Tool ◽  
Energy Prices ◽  
Renewable Sources ◽  
The Impact

Starting from the reality that Europe is in full transition, the aim of this study is to carry out an analysis to determine the contribution of renewable energy sources to primary energy production and also to determine the impact of the increase in the share of renewable energy on energy prices, on the economy. The study is based on the 2011 – 2015 information taken from the most recent studies conducted at EU and Romanian level on action plans on renewable energy sources and energy efficiency. On the basis of the data collected, the analysis focused on the share of renewable energy sources in energy production and primary energy production from renewable sources divided by individual sources and the structure of consumption on the main activities of the national economy to see how various factors influence the future of clean energy and the impact on energy prices. For analysis, a dynamic analysis tool was used, the Risk module in the Palisade software package, which through a series of simulations allows combining the identified uncertainties. The results of the analysis and simulations carried out made highlight the best scenarios of increasing the share of renewable sources in energy production, to lower energy prices and to sustainable economic growth.

scholarly journals Assessing Uncertainties of Life-Cycle CO2 Emissions Using Hydrogen Energy for Power Generation

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6943
Author(s):  
Akito Ozawa ◽  
Yuki Kudoh
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Life Cycle ◽  
Co2 Emissions ◽  
Co2 Emission ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Energy Sources ◽  
Hydrogen Energy ◽  
Low Carbon

Hydrogen and its energy carriers, such as liquid hydrogen (LH2), methylcyclohexane (MCH), and ammonia (NH3), are essential components of low-carbon energy systems. To utilize hydrogen energy, the complete environmental merits of its supply chain should be evaluated. To understand the expected environmental benefit under the uncertainty of hydrogen technology development, we conducted life-cycle inventory analysis and calculated CO2 emissions and their uncertainties attributed to the entire supply chain of hydrogen and NH3 power generation (co-firing and mono-firing) in Japan. Hydrogen was assumed to be produced from overseas renewable energy sources with LH2/MCH as the carrier, and NH3 from natural gas or renewable energy sources. The Japanese life-cycle inventory database was used to calculate emissions. Monte Carlo simulations were performed to evaluate emission uncertainty and mitigation factors using hydrogen energy. For LH2, CO2 emission uncertainty during hydrogen liquefaction can be reduced by using low-carbon fuel. For MCH, CO2 emissions were not significantly affected by power consumption of overseas processes; however, it can be reduced by implementing low-carbon fuel and waste-heat utilization during MCH dehydrogenation. Low-carbon NH3 production processes significantly affected power generation, whereas carbon capture and storage during NH3 production showed the greatest reduction in CO2 emission. In conclusion, reducing CO2 emissions during the production of hydrogen and NH3 is key to realize low-carbon hydrogen energy systems.

Modeling an Energy Storage System Based on a Hybrid Renewable Energy System in Stand-alone Applications

2017 ◽  
Vol 68 (11) ◽  
pp. 2641-2645
Author(s):  
Alexandru Ciocan ◽  
Ovidiu Mihai Balan ◽  
Mihaela Ramona Buga ◽  
Tudor Prisecaru ◽  
Mohand Tazerout
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Energy Storage System ◽  
Compressed Air ◽  
Energy Sources ◽  
Energy Storage Systems ◽  
Hybrid Renewable Energy System

The current paper presents an energy storage system that stores the excessive energy, provided by a hybrid system of renewable energy sources, in the form of compressed air and thermal heat. Using energy storage systems together with renewable energy sources represents a major challenge that could ensure the transition to a viable economic future and a decarbonized economy. Thermodynamic calculations are conducted to investigate the performance of such systems by using Matlab simulation tools. The results indicate the values of primary and global efficiencies for various operating scenarios for the energy storage systems which use compressed air as medium storage, and shows that these could be very effective systems, proving the possibility to supply to the final user three types of energy: electricity, heat and cold function of his needs.

scholarly journals The Energy System of an Ecovillage: Barriers and Enablers

Land ◽  
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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