scholarly journals Searching for renewable energy sources on urban areas

2000 ◽  
pp. 961-971
Author(s):  
Lidiya Svirenko ◽  
Yuriy Vergeles ◽  
Olga Tugai
Keyword(s):  
Renewable Energy ◽  
Urban Areas ◽  
Energy Production ◽  
Dead Wood ◽  
Optimal Allocation ◽  
Wastewater Treatment Plants ◽  
Renewable Energy Sources ◽  
Energy Potential ◽  
Renewable Sources ◽  
The City

The possibilities and capacities of energy production from renewable sources in urban areaswere studied on the example of the city of Kharkiv, Ukraine (population ca. 1.4 mln, occupied 2 area ca. 320 km ). The following alternate renewable sources and ways for energy production(except solar and wind) have been identified: (1) biogas to be produced at municipal landfills;(2) biogas to be produced from sewage sludge accumulated at wastewater treatment plants;(3) wood wastes from urban dwellings' reconstruction and furniture renewal; (4) litter fromtree stands of the city (woody and leaf litter, debris, dead wood, etc.); (5) biomass harvestedwhile the phytotechnologies are applied for brown field remediation (energy crops, willowsand poplars, etc.). The energy potential of primary and secondary renewable energy sourceshas been estimated. Approach to decision-making on optimal allocation of sites fordecentralised energy production on the city's territory and relevant technologies for energyproduction are discussed.

Limiti e prospettive delle fonti rinnovabili in Italia

2009 ◽  
pp. 163-179
Author(s):  
Domenico Coiante
Keyword(s):  
Renewable Energy ◽  
Energy Balance ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Power Level ◽  
Energy Potential ◽  
Renewable Sources ◽  
Practical Result ◽  
Grid Connection ◽  
Renewable Energy Production

- The Italian energy balance for year 2005 is discussed with particular attention on renewable energy production. The potentials of renewable sources are evaluated in terms of energy density that can be obtained from occupied plant area. About 20000 km2 of sunny barren lands are present in South of Italy, particularly suitable for photovoltaic plants and that corresponds to a potential production of 144 Mtep of primary energy. Therefore, in theory, the photovoltaic energy potential is comparable with energy balance. The grid connection limit due to intermittent power generation of photovoltaic and wind energy systems is considered in relation with the stability of grid power level. Assuming a 25% maximum grid penetration of intermittent power with respect to capacity of active thermoelectric generators, the renewable energy contribution amounts to about 2% of annual energy balance. In front of expectations for a larger contribution, the practical result is the renewable energy production of present systems is marginal, unsuitable for counteracting the global climate crisis. The conclusion is that, for exploiting the large renewable energy potential, is necessary to implement the plants with an energy storage system able to overcome the source intermittency. Without this improvement, the expectations on renewable energy sources could be disappointed.Key words: intermittent renewable sources, energy production limit, grid connection

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.

THE POTENTIAL OF USING RENEWABLE ENERGY IN SUSTAINABLE TOURISM IN CROATIA

2006 ◽  
Vol 12 (2) ◽  
pp. 145-154
Author(s):  
Rade Knežević
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
Sustainable Tourism ◽  
Renewable Energy Sources ◽  
Motor Vehicles ◽  
Renewable Sources ◽  
Running Water ◽  
Tourist Destinations ◽  
Energy Consumption Patterns ◽  
Final Energy Consumption

This paper analyses final-energy consumption patterns in Croatian tourist destinations and it explores the potential for energy production based on renewable sources. It links the use of renewable sources in energy production with the need to promote sustainable tourism, provide energy-based amenities for tourists, and ensure environmental protection, and it focuses on solar power, wind power, the power of running water and biomass, the power of biofuel for motor vehicles, and biothermal energy as suitable sources of renewable energy. The paper also looks at the technologies used in converting renewable energy sources into energy. In closing, it suggests that a more dynamic approach should be taken in substituting fossil-based energy with renewable energy to achieve environmental and economic efficiency.

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.

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 Energy Clusters as a New Urban Symbiosis Concept for Increasing Renewable Energy Production—A Case Study of Zakopane City

2020 ◽  
Vol 12 (14) ◽  
pp. 5634
Author(s):  
Agnieszka Czaplicka-Kotas ◽  
Joanna Kulczycka ◽  
Natalia Iwaszczuk
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Environmental Aspects ◽  
Final Energy Consumption ◽  
Per Capita ◽  
The Creation ◽  
The Impact ◽  
The City

One of the priority lines of action in Poland is to increase energy production from renewable energy sources (RESs). Based on the “Poland’s national energy and climate plan for the years 2021–2030”, Poland aims to achieve 21%–23% of RES share in gross final energy consumption by 2030. While coal is still the most important source of energy, new technological and organisational solutions for increasing RESs are being tested and implemented. Therefore, the creation of energy clusters based on the idea of urban and industrial symbiosis was first proposed by the Ministry of Energy in 2016. To date, there are 66 clusters in different regions in Poland, but only a few of them are active and innovative. One of them is located in the city of Zakopane, a mountain resort, which attracts about 3 million tourists annually and has developed the wide-ranging use of geothermal sources for energy supply and recreation. The paper aims to analyse the impact of the creation of energy clusters on the city’s development, including economic, social, and environmental aspects. The “willingness to pay” (WTP) method was used to calculate the impact of air pollution on Zakopane and to compare it with the Polish average to estimate the significance of the transformation to RESs in this tourist city. The results from the studies are as follows: health cost per capita in Zakopane is between 252.07 and 921.30 euro. The investigations presented can be the basis for recommendations in strategic documents in the field of regional development and environmental protection, especially on the use and promotion of urban symbiosis for increasing use of RESs.

scholarly journals An Empirical Approach to Differences in Flexible Electricity Consumption Behaviour of Urban and Rural Populations—Lessons Learned in Germany

2021 ◽  
Vol 13 (16) ◽  
pp. 9028
Author(s):  
Lucas Roth ◽  
Özgür Yildiz ◽  
Jens Lowitzsch
Keyword(s):  
Renewable Energy ◽  
Rural Areas ◽  
Urban Areas ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Supply And Demand ◽  
Electricity Consumption ◽  
Lessons Learned ◽  
Consumption Behaviour ◽  
Production Technologies

This article analyses two major trends of the 21st century. Firstly, the transition from fossil fuel-based energy production to renewable energy sources. Secondly, the inexorable urbanisation which can be witnessed all over the globe. The most promising renewable energy production technologies for the near future, i.e., wind and solar energy, are volatile by nature which makes matching supply and demand essential for a successful transition. Therefore, the aspects that determine the willingness of consumers to flexibilise their demand has gained growing attention. Initial research shows that different settings for (co-)ownership in terms of available prosumption options and used production technologies have a varying impact on demand flexibility. However, existing research has analysed flexibility drivers solely for the general population as an aggregate without any distinction regarding spatial, economic, or social factors. In this article, the authors go one step further and analyse whether those drivers for flexible consumption behaviour differ in rural or urban areas acknowledging differences in day-to-day life in both cases. This study is based on 2074 completed questionnaires from German consumers which were analysed using propensity score matching. The results show that people from rural and urban areas do not significantly differ in their willingness to be demand flexible in general. However, (co-)owners of RE installations from rural areas are generally significantly more demand flexible than (co-)owners of RE installations from urban areas. Further, when looking at different RE technologies, the results show that (co-)owners of solar installations are significantly more demand flexible if they are from rural areas. Lastly, when looking at usage options, people who solely consume produced electricity are more demand flexible if they are from rural areas as well.

Weibull distribution for determination of wind analysis and energy production

2015 ◽  
Vol 12 (3) ◽  
pp. 215-220 ◽  
Author(s):  
Faruk Oral ◽  
İsmail Ekmekçi ◽  
Nevzat Onat
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Wind Turbines ◽  
Energy Production ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Energy Sources ◽  
Energy Potential ◽  
Electrical Energy Production

In recent years, decreasing reserves and environmental problems related with fossil fuels have increased the demand for clean and renewable energy sources, as with all over the world and also in Turkey. Wind energy is the one of the most rapidly growing among the renewable energy sources in terms of technological and utilization. Turkey is one of the rich countries in Europe in respect to wind energy potential. Productive and effective use of this potential is very important for Turkey that is depended on foreign countries especially in respect to fossil energy sources. Wind speed values are the most important data in calculation of electrical energy from wind turbines. In this study, latest developments and energy-power equations related to wind turbines are investigated. Using of the data obtained from the wind measurement station installed in Sakarya-Esentepe region, annual electrical energy production of an example wind plant is predicted.

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.

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