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

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.

scholarly journals Special Issue on Cutting-Edge Technologies for Renewable Energy Production and Storage

2020 ◽  
Vol 10 (3) ◽  
pp. 837
Author(s):  
Matteo Prussi
Keyword(s):  
Renewable Energy ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Special Issue ◽  
Gas Emissions ◽  
Renewable Energy Production ◽  
And Storage

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

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.

scholarly journals Socioeconomic Determinants of Renewable Energy Production in Emerging and Developed Countries

2021 ◽  
Author(s):  
Suzanna Elmassah
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Developed Countries ◽  
Emerging Countries ◽  
Oil Price ◽  
Annual Data ◽  
Long Run ◽  
Renewable Energy Production ◽  
Short Run

Abstract Energy is essential for development and economic growth, but traditional non-renewable energy sources are finite and have significant adverse environmental impacts. Therefore, there is an increasing interest in energy generation from renewable sources. However, research to date in this field does not sufficiently identify the common factors determining the uptake of renewable energy in emerging and developed countries. This paper addresses that gap by identifying the complex interrelationships between factors that determine the extent to which countries convert to renewable energy. The article's primary focus is a detailed statistical analysis of 10 developed and 16 emerging countries using annual data from 1976–2018. The objective is to examine the interrelationships and elasticities between increased production of renewable energy and three key socioeconomic variables; GDP, CO2 emissions, and oil price. This research uses panel data and time-series analyses to identify panel and country-specific elasticity of renewable energy production and dynamic causal relationships between these variables. It also applies fully modified and dynamic ordinary least square approaches. The study details the different interactions between the variables in each country. It uses an autoregressive distributed lag model to determine the long and short-run dynamics between renewable energy production and the three variables in each country. The paper shows there was a long-run elasticity between renewable energy and GDP in the developed countries and short-run dynamics between renewable energy and the other two variables. Whereas in the emerging countries category, there were long-run relationships between renewable energy and GDP, CO2 emissions, and oil price.

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 On the Influence of Renewable Energy Sources in Electricity Price Forecasting in the Iberian Market

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2082 ◽  
Author(s):  
Diego Aineto ◽  
Javier Iranzo-Sánchez ◽  
Lenin G. Lemus-Zúñiga ◽  
Eva Onaindia ◽  
Javier F. Urchueguía
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Electricity Price ◽  
Price Forecasting ◽  
Explanatory Variables ◽  
Electricity Price Forecasting ◽  
Renewable Energy Production ◽  
Eu Policies

The mainstream of EU policies is heading towards the conversion of the nowadays electricity consumer into the future electricity prosumer (producer and consumer) in markets in which the production of electricity will be more local, renewable and economically efficient. One key component of a local short-term and medium-term planning tool to enable actors to efficiently interact in the electric pool markets is the ability to predict and decide on forecast prices. Given the progressively more important role of renewable production in local markets, we analyze the influence of renewable energy production on the electricity price in the Iberian market through historical records. The dependencies discovered in this analysis will serve to identify the forecasts to use as explanatory variables for an electricity price forecasting model based on recurrent neural networks. The results will show the wide impact of using forecasted renewable energy production in the price forecasting.

scholarly journals The Result of Residential Segment of Renewable Energy Production in Hungary

2018 ◽  
Vol 9 (1) ◽  
pp. 139-142
Author(s):  
Balázs Kulcsár
Keyword(s):  
Renewable Energy ◽  
Energy Dependence ◽  
Energy Security ◽  
Energy Cost ◽  
Energy Production ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Electricity Supply ◽  
Renewable Energy Production

Abstract The proportion of renewable energy sources must be increased to reduce the energy dependence and energy cost of municipalities, to increase energy security and to consider aspects of the environment. The purpose of this research is to determine how and to what extent small-size household power plants (SSHPP) – which belong to the category of smallest-scale power plants –can contribute to providing the electricity supply with regard to all the Hungarian settlements.

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