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| Registros recuperados: 38 | |
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| Rodrigues,Rafael V.; Rossi,Luiz A.. |
| ABSTRACT The successful in the implementation of wind turbines depends on several factors, including: the wind resource at the installation site, the equipment used, project acquisition and operational costs. In this paper, the production of electricity from two small wind turbines was compared through simulation using the computer software HOMER - a national model of 6kW and an imported one of 5kW. The wind resources in three different cities were considered: Campinas (SP/BR), Cubatão (São Paulo/BR) and Roscoe (Texas/ USA). A wind power system connected to the grid and a wind isolated system - batteries were evaluated. The results showed that the energy cost ($/kWh) is strongly dependent on the windmill characteristics and local wind resource. Regarding... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Homer; Wind power; Electricity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000200281 |
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| Chary, Killian; Aubin, Joel; Guinde, Loic; Sierra, Jorge; Blazy, Jean-marc. |
| Biomass is a promising renewable alternative to decarbonize and to secure energy production on small islands, as most insular power generation systems rely heavily on imported fossil fuels. Feedstock procurement is a key aspect of bioenergy chain sustainability, and local resources as well as imported biomass can be considered if the electricity generated presents environmental benefits. We used Life Cycle Assessment (LCA) to evaluate the environmental impacts of 1 kWh of electricity produced in Guadeloupe from the combustion of locally grown energy cane and imported wood pellets. The energy cane agricultural supply was simulated using a bio-economic model to elaborate and analyze five scenarios involving different biomass mixes and geographical areas of... |
| Tipo: Text |
Palavras-chave: LCA; Electricity; Energy cane; Wood pellet; Islands; Saccharum sp.. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00427/53878/55107.pdf |
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| Palmer, Karen L.; Burtraw, Dallas. |
| In the mid-1990s, when the Federal Energy Regulatory Commission was preparing to release Order 888 requiring open access to the transmission grid, the commission, environmental groups, and the Environmental Protection Agency, among others, raised the question of how open access and greater competition in wholesale electricity markets might affect the environment. If open access worked as expected, underutilized older coal-fired generators in the Midwest and elsewhere might find new markets for their power, leading to associated increases in air pollution emissions. Restructuring also might lead to retirements of inefficient nuclear facilities, whose generation would be replaced by fossil generation, further increasing emissions. On the other hand, some... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Electricity; Electric utilities; Regulation; Competition; Environment; Air pollution; Natural gas; Coal; Nuclear; Renewables; Customer choice; Resource /Energy Economics and Policy; L51; L94; L98. |
| Ano: 2005 |
URL: http://purl.umn.edu/10656 |
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| Bishop, Phil; Bull, Brian. |
| Increasing demand for electricity in New Zealand requires approximately 150 megawatts of new capacity to be installed annually. Rapidly increasing global prices for fossil fuels; the New Zealand Energy Strategy with its focus on renewable technologies; climate change policies; and a gradual shift from an energy constrained electricity system to one with capacity constraints are all factors underlying a change in the type of generation plant being installed and the location of that plant. This paper examines the likely future of the generation sector over the next 20-30 years. It is based on the work undertaken by the Electricity Commission in preparing its Statement of Opportunities, which contains scenarios describing how electricity may be generated in... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Electricity; Capacity expansion; Environmental Economics and Policy; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/96442 |
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| Darmstadter, Joel. |
| This paper looks at the status and prospects of renewables-with particular emphasis on windpower-in the electric power sector. Although renewables account for a steadily rising share of electricity generation in various countries, their role remains small in absolute terms. In part, this is because of technological progress of and successful competition from fossil-fueled generation-notably, combined cycle gas turbines. While diminishing, subsidies continue to be indispensable to the use of renewables in most places. Viability of renewables-based electricity is undermined by the cost of externalities for which fossil energy combustion is only partially charged. A number of countries (and states in the U.S.) have launched obligatory requirements for... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Renewable energy; Electricity; Windpower; Externalities; Environmental Economics and Policy; Q21; L94. |
| Ano: 2003 |
URL: http://purl.umn.edu/10777 |
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| Shumaker, George A.; Luke-Morgan, Audrey S.; McKissick, John C.. |
| This study investigates the potential for using biomass for the production of electricity in Georgia. The volume, important characteristics, and delivered costs per unit of energy are estimated for various locally produced biomass. Production of synthetic fuels using both pyrolysis and gasification technologies is investigated as potential means for converting biomass into electricity. Capital and operating costs for each of these two technologies are projected across three different scales of production. Estimated costs per unit of electricity generated are determined. It appears, under the conditions modeled, these technologies are not cost competitive with currently used technologies. Significant subsidies would be needed to induce the adoption of these... |
| Tipo: Journal Article |
Palavras-chave: Bio-electricity; Bio-feedstocks; Biomass; Cost; Electricity; Agribusiness; Resource /Energy Economics and Policy. |
| Ano: 2009 |
URL: http://purl.umn.edu/90661 |
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| Bernard, Jean-Thomas; Guertin, Chantal. |
| Since January 1, 1997, the wholesale electricity market in the United States has been open to competition. To satisfy the reciprocity requirements imposed by the Federal Energy Regulatory Commission, Hydro-Quebec, a Canadian utility, made its transmission grid accessible to third parties. Under the current regulation, transmission losses are taken into account through a single, constant rate; location and time of use play no role. Hydro-Quebec generates most of its electricity from hydro resources. Long high-voltage power lines link production in the North to consumption centers in the South, where there are interconnections with neighboring areas. We develop an optimization model that allows us to calculate nodal prices on the basis of the opportunity... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Electricity; Transmission pricing; Hydropower; Resource /Energy Economics and Policy; L94. |
| Ano: 2002 |
URL: http://purl.umn.edu/10724 |
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| Registros recuperados: 38 | |
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