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Wind power costs in Portugal

Saleiro, Carla; Araújo, Maria Madalena Teixeira de; Ferreira, Paula Varandas
Fonte: Risø National Laboratory Publicador: Risø National Laboratory
Tipo: Conferência ou Objeto de Conferência
Publicado em 22/05/2007 ENG
Relevância na Pesquisa
85.95%
In a way to reduce the external energy dependence, increasing also the investments in renewable energy sources and aiming for the concretization of the European renewable objectives, the Portuguese government defined a goal of 5100 MW of installed wind power, up to 2012. If the drawn objectives are accomplished, by 2010 the wind power share may reach values comparable to leading countries like Denmark, Germany or Spain. The Portuguese forecasts also indicate a reinforcement of the natural gas fired generation in particular through the use of the combined cycle technology, following the European tendency. This analysis sets out to evaluate the total generating cost of wind power and CCGT in Portugal. A life cycle cost analysis was conducted, including investment costs, O&M costs, fuel costs and external costs of emissions, for each type of technology. For the evaluation of the externalities ExternE values were used. The results show that presently the wind power production cost is higher than the CCGT one, at least from the strictly financial point of view. CCGT costs increase significantly when charges for externalities are included. However, they only reach levels higher than the equivalents for wind power for high externality costs estimations. This partially results from the low load factor of the wind farms in Portugal and also from the lowemission levels of the gas fired technology used in the comparison. A sensitive analysis of the technical and economical parameters was also conducted. Particular attention was given to the natural gas prices due to the possible increase over time. The fuel escalation rate is the parameter that has larger effects on the final costs. It was verified that the total cost of wind plant is more influenced by the load factor than the total cost of CCGT.

The impacts of wind power on power systems operation

Ferreira, Paula Varandas; Araújo, Maria Madalena Teixeira de; O’Kelly, M. E. J.
Fonte: WSEAS Press Publicador: WSEAS Press
Tipo: Conferência ou Objeto de Conferência
Publicado em 24/07/2007 ENG
Relevância na Pesquisa
85.82%
The wind power sector is growing rapidly in Portugal and the National objectives for energy include a significant increase of wind power during the next years. The large penetration of wind power in Portugal will influence significantly the energy system cost, but it seems also essential to materialize the international energetic and environmental commitments. This paper focuses on the impact of large scale wind scenarios on the power system operation. CO2 abatement potential is estimated along with the effects on the operating costs of thermal power plants. Simulations for different wind scenarios were run for 2016, assuming the possibility of exports. According to the results, it seems that about 20% of wind power penetration may be achieved in Portugal with minor losses of efficiency of the global system.

The cost and emission saving potential of wind power

Ferreira, Paula Varandas
Fonte: Universidade do Minho Publicador: Universidade do Minho
Tipo: Conferência ou Objeto de Conferência
Publicado em 22/10/2013 ENG
Relevância na Pesquisa
85.89%
This paper addresses the effect of the increasing wind penetration on the operating performance of a diversified electricity system comprising wind, thermal, hydro and other renewable power plants. A short term optimization model is used to run the exploration planning under different wind power scenarios. The seasonality of the hydro and wind regimes and the hourly variations of supply and demand are acknowledged in the model. Simulations for the Portuguese electricity system are presented in order to establish the use of the proposed model on supporting more informed decision making for future energy strategies. The cost savings and CO2 abatement potential of wind power are estimated along with the effects on the operating performance and costs of thermal power plants.; This work was financed by: the QREN – Operational Programme for Competitiveness Factors, the European Union – European Regional Development Fund and National Funds- Portuguese Foundation for Science and Technology, under Project FCOMP-01-0124-FEDER-011377 and Project Pest-OE/EME/UI0252/2011.

State-of-the-art of design and operation of power systems with large amounts of wind power: Summary of IEA Wind collaboration

Holttinen, Hannele; Meibom, Peter; Ensslin, Cornel; Hofmann, Lutz; Tuohy, Aidan; Tande, John O.; Estanqueiro, Ana; Gomez, Emilio; Soder, Lennart; Shakoor, Anser; Smith, J. Charles; Parsons, Brian; Hulle, Frans van
Fonte: Laboratório Nacional de Energia e Geologia Publicador: Laboratório Nacional de Energia e Geologia
Tipo: Conferência ou Objeto de Conferência
Publicado em //2007 ENG
Relevância na Pesquisa
85.82%
An international forum for exchange of knowledge of power system impacts of wind power has been formed under the IEA Implementing Agreement on Wind Energy. The task “Design and Operation of Power Systems with Large Amounts of Wind Power” is analysing existing case studies from different power systems.There are a multitude of studies made and ongoing related to cost of wind integration. However, the results are not easy to compare. This paper summarises the results from 15 case studies.

Impact of weather regimes on the wind power ramp forecast in Portugal

Couto, A.; Costa, P.; Rodrigues, L.; Lopes, Vitor V.; Estanqueiro, Ana
Fonte: Institute of Electrical and Electronics Engineers - IEEE Publicador: Institute of Electrical and Electronics Engineers - IEEE
Tipo: Artigo de Revista Científica
Publicado em //2014 ENG
Relevância na Pesquisa
85.81%
Short-term forecasting and diagnostic tools for severe changes of wind power production (power ramps) may provide reliable information for a secure power system operation at a small cost. Understanding the underlying role of the synoptic weather regimes (WRs) in triggering the wind power ramp events can be an added value to improve and complement the current forecast techniques. This work identifies and classifies the WRs over mainland Portugal associated with the occurrence of severe wind power ramps. The most representative WRs are identified on compressed surface level atmospheric data using principal component analysis by applying K-means clustering. The results show a strong association between some synoptic circulation patterns and step variations of the wind power production indicating the possibility to identify certain WRs that are prone to trigger severe wind power ramps, thus opening the possibility for future development of diagnostic warning systems for system operators’ use.

Economic modeling of intermittency in wind power generation

Cheng, Alan Yung Chen
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 61 p.; 4152971 bytes; 4153221 bytes; application/pdf; application/pdf
ENG
Relevância na Pesquisa
75.95%
The electricity sector is a major source of carbon dioxide emissions that contribute to global climate change. Over the past decade wind energy has steadily emerged as a potential source for large-scale, low carbon energy. As wind power generation increases around the world, there is increasing interest in the impacts of adding intermittent power to the electricity grid and the potential costs of compensating for the intermittency. The goal of this thesis research is to assess the costs and potential of wind power as a greenhouse gas abatement option for electricity generation. Qualitative and quantitative analysis methods are used to evaluate the challenges involved in integrating intermittent generation into the electricity sector. A computable generation equilibrium model was developed to explicitly account for the impacts of increasing wind penetration on the capacity value given to wind. The model also accounts for the impacts of wind quality and geographic diversity on electricity generation, and the impacts of learning-by-doing on the total cost of production. We notice that the rising costs associated of intermittency will limit the ability of wind to take a large share of the electricity market. As wind penetration increases...

Investigation and Research of China Power Social Universal Services

North China Electric Power University
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Relevância na Pesquisa
95.85%
The investigation conducted by this project concernt China power social universal services include: the investigation on the actuality of the domestic power social universal services or on the other industries and the research and study on abroad services. Through research of the domestic power social universal service, we could realize the actuality of the domestic power social universal services, hold the scale of the requirement, the characteristics of the region, and also the existing problems and obstacles of the universal service, furthermore, calculate the amount of capital that power social universal services needed; then draw the successful experience of domestic and foreign services to make suggestions on the policy, regulatory measures and implementation of programs which are adapt to the development of China power social universal service.

The Economics of Policy Instruments to Stimulate Wind Power in Brazil

Landis, Florian; Timilsina, Govinda R.
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Tipo: Trabalho em Andamento
EN_US
Relevância na Pesquisa
95.94%
Large-scale deployment of renewable energy technologies, such as wind power and solar energy, has been taking place in industrialized and developing economics mainly because of various fiscal and regulatory policies. An understanding of the economy-wide impacts of those policies is an important part of an overall analysis of them. Using a perfect foresight computable general equilibrium model, this study analyzes the economy-wide costs of achieving a 10 percent share of wind power in Brazil’s electricity supply mix by 2030. Brazil is in the midst of an active program of wind capacity expansion. The welfare loss would be small, 0.1 percent of total baseline welfare in the absence of the 10 percent wind power expansion. The study also finds that, in the case of Brazil, production subsidies financed through increased value-added tax would have superior impacts on welfare and greenhouse gas mitigation, compared with a consumption mandate where electricity utilities are allowed to pass the increased electricity supply costs directly to consumers. These two policies would impact various production sectors differently to achieve the wind power expansion targets: the burden of the mandate falls mostly on electricity-intensive production and consumption...

Wind Energy in Colombia : A Framework for Market Entry

Vergara, Walter; Deeb, Alejandro; Toba, Natsuko; Cramton, Peter; Leino, Irene
Fonte: World Bank Publicador: World Bank
Tipo: Publications & Research :: Publication; Publications & Research :: Publication
ENGLISH
Relevância na Pesquisa
85.95%
The purpose of this report is to provide decision makers in Colombia (and by extension other countries or regions), who are considering the deployment or consolidation of wind power, with a set of options to promote its use. The options presented are the result of an analysis of the Colombian market; this analysis included simulations and modeling of the country's power sector, and extensive consultations with operators, managers, and agents. More information on the analysis and simulations is presented in the appendixes. Wind was chosen to exemplify the range of renewable energy alternatives available to complement traditional power sector technologies on the basis of its technical maturity, its relatively low cost compared to other options, the country's experience, and its wind power potential. This report constitutes the second phase of a barrier analysis to wind energy in Colombia.

Wind Power Development : Economics and Policies

van Kooten, G. Cornelis; Timilsina, Govinda R.
Fonte: Banco Mundial Publicador: Banco Mundial
Tipo: Publications & Research :: Policy Research Working Paper
ENGLISH
Relevância na Pesquisa
95.99%
This study reviews the prospects of wind power at the global level. Existing studies indicate that the earth's wind energy supply potential significantly exceeds global energy demand. Yet, only 1 percent of the global electricity demand is currently derived from wind power despite 40 percent annual growth in wind generating capacity over the past 25 years. More than 98 percent of total current wind power capacity is installed in the developed countries plus China and India. It has been estimated that wind power could supply 7 to 34 percent of global electricity needs by 2050. However, wind power faces a large number of technical, economic, financial, institutional, market, and other barriers. To overcome these barriers, many countries have employed various policy instruments, including capital subsidies, tax incentives, tradable energy certificates, feed-in tariffs, grid access guarantees and mandatory standards. Besides these policies, climate change mitigation initiatives resulting from the Kyoto Protocol (e.g....

China - Meeting the Challenges of Offshore and Large-Scale Wind Power : Strategic Guidance

World Bank
Fonte: World Bank Publicador: World Bank
Tipo: Economic & Sector Work :: Energy Study
ENGLISH
Relevância na Pesquisa
75.89%
In view of the escalating global problems associated with the environment, energy, and natural resources, especially the increasing sign of global climate change, wind power is receiving more and more high-level attention on a global scale, and it has reached a rapid rate of development as a result of the combined efforts of various countries. The world's installed capacity of wind power has already surpassed 100 GW, and wind power has become an essential part of the world's energy structure. This publication comprises three main parts: i) part A contains the key messages emerging from the research and analytical work undertaken by Garrad Hassan and Partners Limited, the team of Chinese experts led by the national energy administration, and staff and consultants of the World Bank; ii) part B comprises the Garrad Hassan and Partners Limited study, 'implementation guidance for offshore and large-scale onshore wind power development in China,' and its annexes; and iii) part C focuses on the workshop on offshore and intertidal wind power development in China...

Technical and Economic Assessment of Off-grid, Mini-grid and Grid Electrification Technologies : Annex 1. Detailed Technology Descriptions and Cost Assumptions

World Bank
Fonte: Washington, DC Publicador: Washington, DC
Tipo: Publications & Research :: ESMAP Paper; Publications & Research
ENGLISH; EN_US
Relevância na Pesquisa
75.99%
This report is part of the Energy and Water Department's commitment to providing new techniques and knowledge which complement the direct investment and other assistance to electrification as provided by the International Bank for Reconstruction and Development (IBRD) and the International Development Association (IDA). The purpose of this report is to convey the results of an assessment of the current and future economic readiness of electric power generation alternatives for developing countries. The objective of the technical and economic assessment was to systematically characterize the commercial and economic prospects of renewable and fossil fuel-fired electricity generation technologies now, and in the near future. The study was designed to cover the widest possible range of electrification applications faced by energy services delivery and power system planners, whether supply is provided through grid networks or stand-alone or mini-grid configurations. The assessment was conducted using a standard approach and is presented in a consistent fashion for each power generation technology configuration. The assessment time frame includes current status and forecast development trends over the period 2005-15...

A comparative study of wind power in the United States, Europe and Japan : strategies applicable to Japan

Shimizu, Shinji. M.B.A., Massachusetts Institute of Technology
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 82 leaves
ENG
Relevância na Pesquisa
105.89%
This thesis explores measures in the Japanese energy industry in order to meet the Kyoto target and further abate carbon dioxide beyond this target. To meet the Kyoto target, the Japanese government wants to increase renewable energy such as wind power as one of the measures. Wind power may be one of the most cost-effective renewable energy sources to address global warming. The world market for wind power is growing rapidly and the markets are concentrated in a few primary countries, with Europe (especially Germany) and the United States leading expansion. However, Japan is now taking its first steps to develop a large-scale commercial market for wind power. It is now difficult for renewable energy, such as wind power, to become a major energy source due to its high cost and intermittent supply. However, it is the author's belief that Japan can increase wind power energy to reduce carbon dioxide emissions by applying appropriate policies and technical development in the power industry. This thesis examines policies designed to encourage the development of wind power in three countries-Germany, Denmark, and the United States-and compares the policies enacted in each of these countries to policies that are used in Japan.; (cont.) Measures that are applicable to shaping the implementation of renewable energy...

Optimal Allocation of Wind Turbines by Considering Transmission Security Constraints and Power System Stability

Palma Behnke, Rodrigo; Rahmann, Claudia
Fonte: Universidade do Chile Publicador: Universidade do Chile
Tipo: Artículo de revista
EN
Relevância na Pesquisa
75.87%
Artículo de publicación ISI; A novel optimization methodology consisting of finding the near optimal location of wind turbines (WTs) on a planned transmission network in a secure and cost-effective way is presented on this paper. While minimizing the investment costs of WTs, the algorithm allocates the turbines so that a desired wind power energy-penetration level is reached. The optimization considers both transmission security and power system stability constraints. The results of the optimization provide regulators with a support instrument to give proper signals to WT investors, in order to achieve secure and cost effective wind power network integration. The proposal is especially aimed at countries in the initial stage of wind power development, where the WT network integration process can still be influenced by policy-makers. The proposed methodology is validated with a real power system. Obtained results are compared with those generated from a business-as-usual (BAU) scenario, in which the WT network allocation is made according to existing WT projects. The proposed WT network allocation scheme not only reduces the total investment costs associated with a determined wind power energy target, but also improves power system stability.

Impacts of large amounts of wind power on design and operation of power systems, results of IEA collaboration

Holttinen, Hannele; Meibom, Peter; Orths, Antje; O'Malley, Mark; Ummels, Bart C.; Tande, John O.; Estanqueiro, Ana; Gomez, Emilio; Smith, J. Charles; Ela, Erik
Fonte: Laboratório Nacional de Energia e Geologia Publicador: Laboratório Nacional de Energia e Geologia
Tipo: Conferência ou Objeto de Conferência
Publicado em /05/2008 ENG
Relevância na Pesquisa
85.88%
There are a multitude of studies made and ongoing related to cost of wind integration. However, the results are not easy to compare. An international forum for exchange of knowledge of power system impacts of wind power has been formed under the IEA Implementing Agreement on Wind Energy. IEA WIND R&D Task 25 on "Design and Operation of Power Systems with Large Amounts of Wind Power" has produced a state-of-the-art report in October 2007, where the most relevant wind power grid integration studies are analysed especially regarding methodologies and input data. This paper summarises the results from 18 case studies with discussion on the differences in the methodology as well as issues that have been identified to impact the cost of wind integration.

Impacts of large amounts of wind power on design and operation of power systems, results of IEA collaboration

Holttinen, Hannele; Meibom, Peter; Orths, Antje; Lange, Bernhard; O'Malley, Mark; Tande, John O.; Estanqueiro, Ana; Gomez, Emilio; Soder, Lennart; Strabac, Goran; Smith, J. Charles; Van Hulle, Frans
Fonte: John Wiley & Sons Publicador: John Wiley & Sons
Tipo: Artigo de Revista Científica
Publicado em //2011 ENG
Relevância na Pesquisa
85.85%
There are dozens of studies made and ongoing related to wind integration. However, the results are not easy to compare. IEA WIND R&D Task 25 on ‘Design and Operation of Power Systems with Large Amounts of Wind Power’ collects and shares information on wind generation impacts on power systems, with analyses and guidelines on methodologies. In the state-of-the-art report (October, 2007), and the fi nal report of the 3 years period (July, 2009) the most relevant wind power grid integration studies have been analysed especially regarding methodologies and input data. Several issues that impact on the amount of wind power that can be integrated have been identifi ed. Large balancing areas and aggregation benefi ts of wide areas help in reducing the variability and forecast errors of wind power as well as help in pooling more cost effective balancing resources. System operation and functioning electricity markets at less than day-ahead time scales help reduce forecast errors of wind power. Transmission is the key to aggregation benefi ts, electricity markets and larger balancing areas. Best practices in wind integration studies are described. There is also benefi t when adding wind power to power systems: it reduces the total operating costs and emissions as wind replaces fossil fuels and this should be highlighted more in future studies.

Design and operation of power systems with large amounts of wind power : Final report, Phase one 2006-08, IEA WIND Task 25

Holttinen, Hannele; Meibom, Peter; Orths, Antje; Van Hulle, Frans; Lange, Bernhard; O'Malley, Mark; Smith, J. Charles; Estanqueiro, Ana; Ricardo, João; Ummels, Bart C.; Gomez, Emilio; Matos, M.; Soder, Lennart; Shakoor, Anser; Strbac, Goran; Tande, John
Fonte: VTT Publicador: VTT
Tipo: Livro
Publicado em //2009 ENG
Relevância na Pesquisa
85.95%
There are already several power systems coping with large amounts of wind power. High penetration of wind power has impacts that have to be managed through proper plant interconnection, integration, transmission planning, and system and market operations. This report is a summary of case studies addressing concerns about the impact of wind power s variability and uncertainty on power system reliability and costs. The case studies summarized in this report are not easy to compare due to different methodology and data used, as well as different assumptions on the interconnection capacity available. Integration costs of wind power need to be compared to something, like the production costs or market value of wind power, or integration cost of other production forms. There is also benefit when adding wind power to power systems: it reduces the total operating costs and emissions as wind replaces fossil fuels. Several issues that impact on the amount of wind power that can be integrated have been identified. Large balancing areas and aggregation benefits of large areas help in reducing the variability and forecast errors of wind power as well as help in pooling more cost effective balancing resources. System operation and working electricity markets at less than day-ahead time scales help reduce forecast errors of wind power. Transmission is the key to aggregation benefits...

Design and operation of power systems with large amounts of wind power: State of the art report

Holttinen, Hannele; Lemstrom, Bettina; Meibom, Peter; Bindner, Henrik; Orths, Antje; Van Hulle, Frans; Ensslin, Cornel; Tiedemann, Albrecht; Hofmann, Lutz; Winter, Wilhelm; Tuohy, Aidan; O'Malley, Mark; Smith, Paul; Pierik, Jan; Tande, John O.; Estanqueir
Fonte: VTT Publicador: VTT
Tipo: Livro
Publicado em //2007 ENG
Relevância na Pesquisa
86%
High penetration of wind power has impacts that have to be managed through proper plant interconnection, integration, transmission planning, and system and market operations. This report is a summary of case studies addressing concerns about the impact of wind powers variability and uncertainty on power system reliability and costs. The case studies summarized in this report are not easy to compare due to different methodology and data used, as well as different assumptions on the interconnection capacity available. Integration costs of wind power need to be compared to something, like the production costs or market value of wind power, or integration cost of other production forms. There is also benefit when adding wind power to power systems: it reduces the total operating costs and emissions as wind replaces fossil fuels. Several issues that impact on the amount of wind power that can be integrated have been identified. Large balancing areas and aggregation benefits of large areas help in reducing the variability and forecast errors of wind power as well as help in pooling more cost effective balancing resources. System operation and working electricity markets at less than day-ahead time scales help reduce forecast errors of wind power. Transmission is the key to aggregation benefits...

Design and operation of power systems with large amounts of wind power, IEA collaboration

Holttinen, Hannele; Meibom, Peter; Ensslin, Cornel; Hofmann, Lutz; McCann, John; Pierik, Jan; Tande, John O.; Hagstrom, Espen; Estanqueiro, Ana; Amaris, Hortensia; Soder, Lennart; Strbac, Goran; Parsons, Brian
Fonte: Laboratório Nacional de Energia e Geologia Publicador: Laboratório Nacional de Energia e Geologia
Tipo: Conferência ou Objeto de Conferência
Publicado em //2006 ENG
Relevância na Pesquisa
85.84%
New R&D collaboration on 'Design and Operation of Power Systems with Large Amounts of Wind Power Production' has been formed in IEA Wind. The R&D task will collect and share information on the experience gained and the studies made on power system impacts of wind power, and review methodologies, tools and data used. This paper outlines the power system impacts of wind power, the national studies published and on-going and describes the goals of the international collaboration. There are dozens of studies made and ongoing related to cost of wind integration, however, the results are not easy to compare. An in-depth review of the studies is needed to draw conclusions on the range of integration costs for wind power. State-of-the art review process will seek for reasons behind the wide range of results for costs of wind integration-definitions for wind penetration, reserves and costs; different power system and load characteristics and operational rules; underlying assumptions on variability of wind etc.

Design and operation of power systems with large amounts of wind power, first results of IEA collaboration

Holttinen, Hannele; Meibom, Peter; Orths, Antje; Hulle, Frans van; Ensslin, Cornel; Hofmann, Lutz; McCann, John; Pierik, Jan; Tande, John O.; Estanqueiro, Ana; Soder, Lennart; Strbac, Goran; Parsons, Brian; Smith, J. Charles; Lemstrom, Bettina
Fonte: Laboratório Nacional de Energia e Geologia Publicador: Laboratório Nacional de Energia e Geologia
Tipo: Conferência ou Objeto de Conferência
Publicado em //2006 ENG
Relevância na Pesquisa
85.84%
An international forum exchange of knowledge of power systems impacts of wind power has been formed under the IEA Implementing Agreement on Wind Energy. The task 'Design and Operation of Power Systems with Large Amounts of Wind Power Production' will analyse existing case studies from different power systems. There is a multitude of studies made and ongoing related to cost of wind integration. However, the results are not easy to compare. This paper summarises the results from 10 countries and outlines the sudies made at European Wind Energy Association and the European system operators UCTE and ETSO. A more in-depth review of the studies is needed to draw conclusions on the range of integration costs for wind power. State-of-the art review process will seek for reasons behind the wide range of results for costs of wind integration-definitions for wind penetration, reserves and costs; different power system and load characteristics and operational rules; underlying assumptions on variability of wind etc.