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Littérature scientifique sur le sujet « Renewable energy, Energy policy, Portfolio optimization »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 10 mars 2023

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Articles de revues sur le sujet "Renewable energy, Energy policy, Portfolio optimization"

He, Yuanyuan, Luxin Wan, Manli Zhang et Huijuan Zhao. « Regional Renewable Energy Installation Optimization Strategies with Renewable Portfolio Standards in China ». Sustainability 14, n^o 17 (23 août 2022) : 10498. http://dx.doi.org/10.3390/su141710498.

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In this paper, we provide theoretical and policy support for quota-allocation strategies based on a national unified renewable energy (RE) power market. Renewable portfolio standards (RPSs) are of great significance in promoting the stable development of renewable energy and improving power market decision making in China’s power industry. To resolve the geographical, resource allocation, and power-grid problems of multi-regional RE power generation, we constructed a regional distribution optimization model with the lowest cost under the RPS policy and designed a set of dynamic distribution mechanisms based on the renewable energy power quota index. The results show that it is necessary to prioritize development of wind-generated power on the North China and Northeast Power Grids, solar energy on the Northwest Power Grid, and biomass energy generation on grids in other regions to plan specific task undertakings and allocate RE power generation to each grid. We propose a multi-regional power distribution model at the lowest cost under the RPS policy to provide solutions and references for renewable energy power market quota allocation.

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Lystbæk, Nicolai, Mikkel Gregersen et Hamid Reza Shaker. « Review of Energy Portfolio Optimization in Energy Markets Considering Flexibility of Power-to-X ». Sustainability 15, n^o 5 (1 mars 2023) : 4422. http://dx.doi.org/10.3390/su15054422.

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Power-to-X is one of the most attention-grabbing topics in the energy sector. Researchers are exploring the potential of harnessing power from renewable technologies and converting it into fuels used in various industries and the transportation sector. With the current market and research emphasis on Power-to-X and the accompanying substantial investments, a review of Power-to-X is becoming essential. Optimization will be a crucial aspect of managing an energy portfolio that includes Power-to-X and electrolysis systems, as the electrolyzer can participate in multiple markets. Based on the current literature and published reviews, none of them adequately showcase the state-of-the-art optimization algorithms for energy portfolios focusing on Power-to-X. Therefore, this paper provides an in-depth review of the optimization algorithms applied to energy portfolios with a specific emphasis on Power-to-X, aiming to uncover the current state-of-the-art in the field.

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Yu, Biying, Zihao Zhao, Guangpu Zhao, Runying An, Feihu Sun, Ru Li et Xiaohan Peng. « Provincial renewable energy dispatch optimization in line with Renewable Portfolio Standard policy in China ». Renewable Energy 174 (août 2021) : 236–52. http://dx.doi.org/10.1016/j.renene.2021.04.055.

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Xu, Da, Ziyi Bai, Xiaolong Jin, Xiaodong Yang, Shuangyin Chen et Ming Zhou. « A mean-variance portfolio optimization approach for high-renewable energy hub ». Applied Energy 325 (novembre 2022) : 119888. http://dx.doi.org/10.1016/j.apenergy.2022.119888.

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Mamkhezri, Jamal, Leonard A. Malczynski et Janie M. Chermak. « Assessing the Economic and Environmental Impacts of Alternative Renewable Portfolio Standards : Winners and Losers ». Energies 14, n^o 11 (5 juin 2021) : 3319. http://dx.doi.org/10.3390/en14113319.

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State-mandated renewable portfolio standards affect substantial portions of the total U.S. electricity supply. Renewable portfolio standards are environmentally motivated policies, yet they have the potential to greatly impact economy. There is not an agreement in the literature on the impact of renewable portfolio standards policies on regional economies, especially on job creation. By integrating various methodologies including econometrics, geographic information system, and input–output analysis into a unique system dynamics model, this paper estimates the economic and environmental impacts of various renewable portfolio standards scenarios in the state of New Mexico, located in Southwestern U.S. The state is endowed with traditional fossil fuel resources and substantial renewable energy potential. In this work we estimated and compared the economic and environmental tradeoffs at the county level under three renewable portfolio standards: New Mexico’s original standard of 20% renewables, the recently adopted 100% renewables standard, and a reduced renewable standard of 10%. The final one would be a return to a more traditional generation profile. We found that while the 20% standard has the highest market-based economic impact on the state as a whole, it is not significantly different from other scenarios. However, when environmental impacts are included, the 100% standard yields the highest value. In addition, while the state level economic impacts across the three scenarios are not significantly different, the county-level impacts are substantial. This is especially important for a state like New Mexico, which has a high reliance on energy for economic development. A higher renewable portfolio standard appears to be an economic tool to stimulate targeted areas’ economic growth. These results have policy implications.

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Hu, Jing, Robert Harmsen, Wina Crijns-Graus et Ernst Worrell. « Geographical optimization of variable renewable energy capacity in China using modern portfolio theory ». Applied Energy 253 (novembre 2019) : 113614. http://dx.doi.org/10.1016/j.apenergy.2019.113614.

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Ko, Woong, Jaeho Lee et Jinho Kim. « The Effect of a Renewable Energy Certificate Incentive on Mitigating Wind Power Fluctuations : A Case Study of Jeju Island ». Applied Sciences 9, n^o 8 (20 avril 2019) : 1647. http://dx.doi.org/10.3390/app9081647.

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As renewable energy penetration in power systems grows, adequate energy policies are needed to support the system’s operations with flexible resources and to adopt more sustainable energies. A peak-biased incentive for energy storage systems (ESS) using the Korean renewable portfolio standard could make power system operations more difficult. For the first time in the research, this study evaluates the effect of imposing a renewable energy certificate incentive in off-peak periods on mitigating wind power fluctuations. We design a coordinated model of a wind farm with an ESS to model the behavior of wind farm operators. Optimization problems are formulated as mixed integer linear programming problems to test the implementation of revenue models under Korean policy. These models are designed to consider additional incentives for discharging the ESS during off-peak periods. The effects of imposing the incentives on wind power fluctuations are evaluated using the magnitude of the renewable energy certificate (REC) multiplier.

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Bhattacharya, Anindya, et Satoshi Kojima. « Power sector investment risk and renewable energy : A Japanese case study using portfolio risk optimization method ». Energy Policy 40 (janvier 2012) : 69–80. http://dx.doi.org/10.1016/j.enpol.2010.09.031.

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Fan, Jing-Li, Jia-Xing Wang, Jia-Wei Hu, Yu Wang et Xian Zhang. « Optimization of China’s provincial renewable energy installation plan for the 13th five-year plan based on renewable portfolio standards ». Applied Energy 254 (novembre 2019) : 113757. http://dx.doi.org/10.1016/j.apenergy.2019.113757.

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Tcvetkov, Pavel. « Climate Policy Imbalance in the Energy Sector : Time to Focus on the Value of CO2 Utilization ». Energies 14, n^o 2 (13 janvier 2021) : 411. http://dx.doi.org/10.3390/en14020411.

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Global warming is an existential threat to humanity and the rapid energy transition, which is required, will be the defining social, political and technical challenge of the 21st century. Practical experience and research results of recent years have showed that our actions to cover the gap between real situation and aims of climate agreements are not enough and that improvements in climate policy are needed, primarily in the energy sector. It is becoming increasingly clear that hydrocarbon resources, which production volume is increasing annually, will remain a significant part of the global fuel balance in the foreseeable future. Taking this into account, the main problem of the current climate policy is a limited portfolio of technologies, focused on replacement of hydrocarbon resources with renewable energy, without proper attention to an alternative ways of decreasing carbon intensity, such as carbon sequestration options. This study shows the need to review the existing climate policy portfolios through reorientation to CO2 utilization and disposal technologies and in terms of forming an appropriate appreciation for the role of hydrocarbon industries as the basis for the development of CO2-based production chains. In this paper we argue that: (1) focusing climate investments on a limited portfolio of energy technologies may become a trap that keeps us from achieving global emissions goals; (2) accounting for greenhouse gas (GHG) emissions losses, without taking into account the potential social effects of utilization, is a barrier to diversifying climate strategies; (3) with regard to hydrocarbon industries, a transition from destructive to creative measures aimed at implementing environmental projects is needed; (4) there are no cheap climate solutions, but the present cost of reducing CO2 emissions exceeds any estimate of the social cost of carbon.

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Thèses sur le sujet "Renewable energy, Energy policy, Portfolio optimization"

BONACINA, FAUSTO. « The optimal generation mix for an electricity producer : the case of Italy ». Doctoral thesis, Università degli Studi di Milano-Bicocca, 2013. http://hdl.handle.net/10281/49725.

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In this work we extend the model of Roques et al. (2008) for the construction of the optimal electricity generation portfolio. In our analysis we consider an electricity producer, who can choose to invest both in renewable and conventional sources. We build portfolios based on the Net Present Value generated by the investment in a particular technology. We use Monte Carlo simulations in order to compute the NPV distributions. As an extension to Roques et al. (2008), we consider the presence of incentives for renewable technologies. We apply our model to Italian data.

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Parvanyan, Tigran. « Renewable Portfolio Standard : an analysis of design and implementation issues / ». Link to online version, 2005. https://ritdml.rit.edu/dspace/handle/1850/1139.

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Hsu, Emma. « A Dirty Renewable : How Trash Incineration Became Classified as Renewable Energy ». Scholarship @ Claremont, 2020. https://scholarship.claremont.edu/pomona_theses/218.

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Burning trash should not be considered “renewable energy.” However, the federal government and as many as twenty-three states classify waste-to-energy recovery (WTE), or the incineration of garbage, as a renewable energy source that is eligible for a host of financial incentives. This paper discusses how WTE qualifies as an energy source that can be included in a state’s Renewable Portfolio Standard (RPS), or regulations that require energy producers to source a specific percentage of energy production from renewable energy sources, claiming the same benefits as cleaner, more sustainable energy sources such as solar, wind, and geothermal power. Upon evaluating incentives and programs for which WTE is eligible, I will argue that WTE is neither an environmentally nor economically viable energy solution. By analyzing WTE policy in the state of Maryland, I examine how RPSs contribute to the longevity of this unsustainable practice, calling for an elimination of WTE from RPS policy and federal incentive programs.

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McGill, Kristin Li. « Potential Solar Consumers' Understanding of Energy Policy Development in Hawaiâi ». ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7489.

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Hawaiâi has implemented renewable energy goals that assume continued investments by solar consumers who seem unaware of their role in the policy's success. Without the renewable resource generation that will come from these investments, the state will be unable to achieve its energy mandate. Using Sabatier and Jenkins-Smith's advocacy coalition framework and Ajzen's theory of planned behavior as the foundation, the purpose of this study was to better understand the perspectives of potential solar consumers on the Island of Oâahu regarding the state's renewable portfolio standards, their level of knowledge regarding consumer impact on this policy, and their perceptions of the roles of the public utilities commission and electric utility company in the implementation of projects associated with achieving the state's energy goals. Data were collected through interviews with 17 participants who represented a small portion of consumers who had begun the solar program application process but had not received approval to install panels at their residences. These data were inductively coded and subjected to a thematic analysis. Key findings indicate that consumers lack sufficient education about the state's energy goals, and that their participation in the policy process is essential for the continued growth of customer-sited solar installations. Implications for positive social change stemming from this study include recommendations for policymakers and solar program developers to engage in more inclusive educational outreach with consumers regarding the state's required renewable energy goals.

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Huang, Junling. « A Climate-friendly Energy Future : Prospects for Wind ». Thesis, Harvard University, 2014. http://dissertations.umi.com/gsas.harvard:11484.

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The objective of this thesis is to evaluate the potential for wind as an alternative energy source to replace fossil fuels and reduce global CO2 emissions. From 1995 to 2007, fossil fuels as the major energy source accounted for an addition of 89.3 Gt of carbon to the atmosphere over this period, 29 % of which was transferred to the ocean, 15 % to the global biosphere, with the balance (57 %) retained in the atmosphere. Building a low-carbon and climate-friendly energy system is becoming increasingly urgent to combat the threat of global warming.
Engineering and Applied Sciences

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Taliotis, Constantinos. « Large scale renewable energy deployment - Insights offered by long-term energy models from selected case studies ». Doctoral thesis, KTH, Energisystemanalys, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-207364.

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The United Nations’ Sustainable Development Goal 7 (SDG7) of Agenda 2030 calls for an increase in the use of renewable energy sources, among other targets. The percentage of fossil fuel-fired thermal generation for electricity is increasingly being reduced as renewable energy technologies (RET) advance in cost-competitiveness, and as greenhouse gas and industrial air pollutant emission limits become more stringent. In certain cases, renewable energy contributes to energy security by improving a nation’s trade balance, since local resources are harnessed and imports are reduced. RET investments are becoming more frequent gaining a sizeable share in the electric power mix of numerous countries. However, RET is affected by existing fossil fuel-fired electricity generation, especially in countries that have domestic reserves. While coal may be dirty, others such as natural gas provide multiple benefits, presenting a challenge to renewables. Additionally, RET endowment varies for each geographical location. This often does not correspond to the location of major electricity demand centers. Therefore, large scale RET adoption and integration becomes logistically more cumbersome, as it necessitates existence of a developed grid network. Utilizing a series of analyses in two different settings – Africa and Cyprus – this thesis draws insights on RET growth policy and the level of technology representation in long term energy models. In order to capture specific challenges of RET integration, enhancements in traditional long-term energy system models are called for and carried out. The case of Africa is used to assess adoption of RET under various trade scenarios. It is home to some of the world’s greatest RET resource potential and the single largest potential RET project, Grand Inga. While, the island of Cyprus has goals of introducing large percentages of RET into its electric power mix. Each have important idiosyncrasies which are reflected in the analysis. On the one hand, natural gas competes with RET in Cyprus and forms a key transition fuel away from oil. On the other hand, lack of cross-border interconnectors limit RET project development across Africa.

QC 20170519

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Bespalova, Olga Gennadyevna. « Renewable portfolio standards in the USA : experience and compliance with targets ». Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/8763.

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Master of Arts
Department of Economics
Tracy M. Turner
Economic growth requires growth of energy consumption. In the second half of the twentieth century energy consumption began to outgrow its production and the United States. Consequently, we observe growing dependence of the U.S. economy on energy imports which is causing political and economic insecurity; increasing pollution and depletion of natural resources. One way to alleviate these problems is to encourage renewable electricity production. Because the electric power industry is the largest consumer of energy sources, including renewable energy, it has become one of the most frequent subjects of the regulatory policies and financial incentives aiming to stimulate renewable electricity production. One of the most promoted renewable energy policies in this industry is a renewable portfolio standard (RPS), which requires electric utilities and other retail electric providers to supply a specified amount of electricity sales from renewable energy sources. Currently 29 states and District of Columbia have the RPSs, while 7 states have goals; but only about two third of those with the RPS have certain targets to meet. To my best knowledge, there are no studies analyzing compliance with the RPSs targets or the role of penalty mechanism in the RPS design on meeting its goal. In my Master Thesis I estimate which states are in compliance with their individual RPSs goals and analyze which factors affect the probability of compliance, with the focus on the role of penalty size, and controlling for complimentary policies promoting renewable energy production. I use a fixed effects linear probability model and state level data. Results indicate that including a penalty in the RPS design significantly increases the probability that states will comply with their goals.

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Parsa, Maryam. « Optimum Decision Policy for Gradual Replacement of Conventional Power Sources by Clean Power Sources ». Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/24015.

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With the increase of world population and industrial growth of developing countries, demand for energy, in particular electric power, has gone up at an unprecedented rate over the last decades. To meet the demand, electric power generation by use of fossil fuel has increased enormously thereby producing increased quantity of greenhouse gases. This contributes more and more to atmospheric pollution, which climate scientists believe can adversly affect the global climate, as well as health and the welfare of the world population. In view of these issues, there is global awareness to look for alternate sources of energy such as natural gas, hydropower, wind, solar, geothermal and biomass. It is recognized that this requires replacement of existing infrastructure with new systems, which cannot be achieved overnight. Optimal control theory has been widely used in diverse areas of physical sciences, medicine, engineering and economics. The main motivation of this thesis is to use this theory to find the optimum strategy for integration of all currently available renewable energy sources with the existing electric power generating systems. The ultimate goal is to eliminate fossil fuels. Eight main energy sources namely, Coal, Petroleum, Natural Gas, Conventional Hydro, Wind, Solar, Geothermal and Biomass are considered in a dynamic model. The state of the dynamic model represents the level of energy generation from each of the sources. Different objective functions are proposed in this thesis. These range from meeting the desired target level of power generation from each of the available sources at the end of a given plan period, to reducing the implementation and investment costs; from minimizing the production from polluted energy sources to meeting the electricity demand during a whole plan period. Official released data from the U.S. Energy Information Administration have been used as a case study. Based on real life data and the mathematics of optimal control theory, we present an optimal policy for integration of renewable energy sources to the national power grid.

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Avril, Sophie. « A multidisciplinary approach to the introduction of the solar photovoltaic technologies in the energy mix ». Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2014. http://www.theses.fr/2014ECAP0057.

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Les problématiques énergétiques sont au sommet des préoccupations politiques dans de nombreux pays, du fait des enjeux environnementaux inhérents, du rôle moteur de l’énergie dans tous les secteurs économiques ainsi que des préoccupations relatives à l’indépendance énergétique. Cet intérêt est accru du fait de la part croissante des sources d’énergie renouvelables et intermittentes dans le mix énergétique mondial. En particulier, de par son fort potentiel et la volonté politique de soutien dont elle a bénéficié, l’énergie photovoltaïque est désormais un acteur clé dans la mutation énergétique mondiale, et son intégration dans le mix mondial doit être réalisée avec attention. Afin d’avoir une compréhension approfondie de la façon dont l’énergie solaire peut pénétrer et transformer le panorama énergétique, nous avons adopté une stratégie en trois niveaux avec une approche multidisciplinaire visant à apporter quelques réponses aux questions suivantes : i/ quel sera la position de l’énergie solaire dans le futur mix énergétique ?; ii/ du fait de son inconvénient majeur, l’intermittence, pouvons-nous fournir une architecture optimale d’une système basé sur l’énergie solaire associant des systèmes de stockage ?; iii/ quelle est l’efficacité des politiques incitatives mises en œuvre pour accélérer son déploiement ?Ainsi, dans un premier chapitre, nous analysons la position particulière de l’énergie photovoltaïque dans le mix énergétique. Après un rappel des enjeux des futurs mix énergétiques mondiaux, nous proposons une description sommaire des différentes technologies solaires et de leurs évolutions attendues en termes d’améliorations techniques et de réductions de coûts. Enfin, nous décrivons la croissance très rapide du marché photovoltaïque et de ces conséquences à la fois sur le mix électrique et sur le secteur industriel. Dans le deuxième chapitre, nous nous intéressons à la problématique de l’intégration de cette énergie intermittente dans le mix électrique, en développant une méthodologie d’évaluation multicritère ainsi qu’un outil d’optimisation multicritère sous contraintes qui permet de faire des simulations d’un système composé de panneaux photovoltaïques et de technologies de stockage. Des cas d’applications sur le cas réel du Cirque de Mafate (L’île de la Réunion, France) sont présentés pour illustrer l’intérêt de la méthode.Enfin, dans le troisième chapitre, nous questionnons l’efficacité de différentes politiques de soutien aux technologies photovoltaïques dans les pays les plus pertinents. Nous examinons plus particulièrement la corrélation entre la puissance installée, l’argent publique dépensé, ainsi que les prix de l’électricité
The energetic issue is on the top of the political agenda in many countries, for environmental reasons, for its driving role in all the economic sectors, as well as for the energetic independency concerns. This problematic is stressed by the increasing weight of renewable intermittent power sources in the global energy mix. In particular, due to its high potential and the strong national policy support it beneficiated, solar photovoltaic energy is now a key player in the world energy mutation, and the way it is integrated into the global mix should be carefully performed. To deeply understand the way solar energy can penetrate and transform the forthcoming energy framework, we adopted a three-level strategy with an multidisciplinary approach to provide some answers to the following questions: i/ how can we situate the photovoltaic power role in future energy mixes?; ii/ due to its main drawback, intermittency, could we provide an optimal design of a system combining storage devices?; iii/ what is the efficiency of the incentive policies that are or have been implemented to accelerate its deployment?That is why, in a first chapter, the peculiar position of the solar photovoltaic energy in the energy mix is analyzed. After recalling the general issue of future global energetic mixes, we propose a brief description of the different photovoltaic technologies and their promising evolutions in terms of technical improvements and cost reductions. Then, we describe the fast growing photovoltaic market and its consequences both on the electricity mix and the industry sector.In the second chapter we investigate the issue of integrating such an intermittent energy in the electricity mix, by developing a multicriteria evaluation methodology and a multicriteria under constraint optimization tool which simulates a system composed of photovoltaic panels and storage devices. Applications on a real case in the Cirque de Mafate (L’île de la Réunion, France) are presented to illustrate the interest of our method.Finally, in chapter three, we question the efficiency of different public support policies to the photovoltaic technologies in the most relevant countries. We focus on correlating the installed power capacity with the spent public money and the electricity prices

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Buckman, Greg. « Renewable Electricity Support Policy ». Phd thesis, 2011. http://hdl.handle.net/1885/7370.

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Renewable electricity (RES-E) is likely to play a major part in the reduction of Australia’s greenhouse gas (GHG) emissions. Because it is currently dearer than fossil-fuel-generated electricity, support mechanisms are needed to allow it to compete with fossil-fuel electricity. In the thesis I examine the generation and subsidy price performance of Renewable Portfolio Standard (RPS) and Feed-in Tariff (FIT) RES-E support mechanisms in the USA, eight Western European countries and Australia. I also examine RES-E subsidies provided by the Australian government as well as its electricity transmission. The thesis’s analysis of Australia’s RES-E development shows that RES-E has a lower electricity generation market share in the country, is less diverse, and is part of a system with a lower level of electricity transmission, than in the other two regions/countries. I also show that the country’s current level of RPS RES-E subsidy compares poorly with equivalent levels of wind and solar subsidisation in Germany, Spain and the UK. Two major conclusions in the thesis, which together form its most significant contribution to knowledge, are, firstly, that radical RES-E expansion will require RPS mechanisms to adopt some features normally found in FITs. The most important of these are different levels of subsidisation for different types of RES-E and a high level of investor certainty about subsidy levels. Secondly, achieving radical RES-E expansion will require FITs to adopt features normally found in RPSs, the most important of which are a high level of generation certainty and a close connection between subsidy levels and market performance. However, the extent to which the RPS and the FIT can be hybridised will not be known with certainty for another three to four years. The RPS will very likely remain the main form of RES-E support in Australia, so the need I have shown for an RPS to adopt features normally found in FITs means that banding should be introduced into its RPS, so that it gives different levels of subsidisation for different RES-E types (particularly for solar and geothermal electricity) and that an implicit, or explicit, price floor is needed to make its tradable certificate prices less volatile. The thesis also makes the case that pre-RPS RES-E generation should be removed from Australia’s RPS; banking of its tradable certificates should be restricted; unusual energy sources should be removed; and its target should be market share based. I also show that if Australia is to make deep cuts in its GHG emissions, its RPS target needs to be significantly increased so that it at least absorbs all the projected increase in its electricity demand. I further recommend that Australia’s different state and territory FITs be replaced with a national gross FIT for small to medium scaled RES-E, differentiated according to location. In general, I find that while Australia has made a reasonable start in its RES-E development, significant redesign of its RPS is needed if the country is to make deep cuts in its electricity generation GHG emissions through radical RES-E expansion.

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Livres sur le sujet "Renewable energy, Energy policy, Portfolio optimization"

Hall, Ridgway M. Renewable portfolio standards. New Providence, N.J : LexisNexis, 2010.

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Energy, New York (State) Legislature Assembly Standing Committee on. Public hearing on renewable portfolio standard. Albany, N.Y : Associated Reporters Int'l., Inc., 2006.

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Brown, Diane H. Inventory of renewable energy resources eligible for the Maryland Renewable Energy Portfolio Standard. Annapolis, Md : Maryland Dept. of Natural Resources, 2006.

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Hurlbut, David. State clean energy practices : Renewable portfolio standards. Golden, Colo : National Renewable Energy Laboratory, 2008.

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Massachusetts, Associated Industries of. The Massachusetts renewable portfolio standard : Context and considerations. Boston, MA : Associated Industries of Massachusetts Foundation, 2004.

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Public Service Commission of Maryland. Renewable portfolio standard report to the Public Service Commission. [Annapolis, Md.] : The Commission, 1999.

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Ryan, Wiser, et National Geothermal Collaborative, dir. Evaluating state renewables portfolio standards : A focus on geothermal energy. [Colo.] : National Geothermal Collaborative, 2003.

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New York (State). Legislature. Assembly. Standing Committee on Energy. Public hearing to examine the policies and implementation plans for the renewable portfolio standard, a program created to encourage the development and use of renewable energy in New York Stat [i.e. State]. Albany, N.Y.?] : Associated Reporters Int'l., Inc., 2005.

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Office, California Energy Commission Technology Market Development. Renewables portfolio standard : Decision on Phase 2 implementation issues. Sacramento : California Energy Commission, Technology Systems Division, Technology Market Development Office, 2003.

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Maryland, Public Service Commission of. Renewable energy portfolio standard report of 2007 in compliance with Section 7-712 of the Public Utility Companies Article, Annotated Code of Maryland /Kenneth D. Schisler, Chairman. Annapolis, Md : The Commission, 2007.

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Chapitres de livres sur le sujet "Renewable energy, Energy policy, Portfolio optimization"

Gökgöz, Fazıl, et Ahmet Yıldırım Erdoğan. « Investigating the Electricity Portfolio Optimization for Renewable Energy Sources ». Dans Renewable Energy for Mitigating Climate Change, 55–83. New York : CRC Press, 2021. http://dx.doi.org/10.1201/9781003240129-4.

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Ife-Adediran, Oluwatobi Ololade, et Oluyemi Bright Aboyewa. « Climate Change Resistant Energy Sources for Global Adaptation ». Dans African Handbook of Climate Change Adaptation, 1955–66. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_106.

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AbstractA holistic response and adaptation to climatic vicissitudes and extreme conditions as well as their associated risks to human and ecological sustainability must adequately cater for energy needs and optimization. An interventional approach should, among other measures, seek to improve the resilience of existing and prospective energy systems to climate change. The structured and policy-driven nature of adaptation measures require a bottom-up proactive approach that envisages the performance and efficiency of these systems, especially in terms of their sensitivity and vulnerability to changing climate conditions. Therefore, this chapter seeks to scrutinize various sources of energy concerning their resistance capabilities to climate change in the face of increasing global energy demands and consumption. Renewable and conventional energy sources are co-examined and compared vis-à-vis the current trends and predictions on climatic factors that are bearing on their principles of production, supply, and distribution. Findings from this chapter will serve as assessment tools for decision makers and corroborate other ongoing discourse on climate actions towards socioeconomic development and a sustainable environment.

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Shrimali, Gireesh. « 52 IMPACT OF RENEWABLE PORTFOLIO STANDARDS ON IN-STATE RENEWABLE DEPLOYMENT IN THE US ». Dans Delivering Energy Law and Policy in the EU and the US, 278–82. Edinburgh University Press, 2016. http://dx.doi.org/10.1515/9780748696802-056.

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Guo, Jingbo, Côme Bissuel et Francois Courtot. « Integrated Urban Energy Planning : A Case-Study Using Optimization ». Dans Frontiers in Artificial Intelligence and Applications. IOS Press, 2021. http://dx.doi.org/10.3233/faia210268.

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This article describes an integrated energy planning optimization case-study. Starting from an integrated urban energy planning practice based on the urban planning information, an optimization approach is implemented to support decisions on suitable energy structures. Based on a use-case, energy demand, renewable energy resources, energy policy and energy prices are analyzed and set as inputs of the optimization. The results are energy structures minimizing the cost for two separated zones. Meanwhile, under different scenarios, in terms of renewable ratio targets and thermal storage, comparison is made for illustrating economy differences. The optimization mentioned in the article is modelled as a Mixed-Integer Linear Programming problem, which can search the optimal solution with high efficiency among the possible system designs.

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Stokes, Leah Cardamore. « Policy Feedback Takes Hold ». Dans Short Circuiting Policy, 108–24. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190074258.003.0004.

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Chapter 4 examines one of the earliest renewable energy laws in the United States: Texas’s renewable portfolio standard, enacted under then-governor George W. Bush in 1999. This chapter provides the early history of clean energy leadership in Texas, when wind energy grew rapidly. Relying on original archival research and primary interviews, it explains why Texas acted on clean energy before California and other more progressive states. It shows how savvy advocates used public opinion to drive policy change during windows of opportunity. More broadly, this case reveals a classic positive feedback dynamic: a growing wind energy sector increased its influence over the legislature and successfully expanded clean energy policy. Here, advocates relied on the fog of enactment to get a clean energy target and an ambitious infrastructure spending bill passed in the legislature. They also worked through the public to convince legislators that clean energy leadership was important for Texans.

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Stokes, Leah Cardamore. « Retrenchment by a Thousand Cuts ». Dans Short Circuiting Policy, 141–63. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190074258.003.0006.

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Chapter 6 explores a case of clean energy retrenchment by a thousand cuts. Kansas first implemented a clean energy law in 2009. The state seemed poised to withstand retrenchment of the renewable portfolio standard due to strong growth in the wind energy industry. However, opponents returned to attack the law year after year and eventually wore down the advocates. Unable to directly overturn the law through the legislature, opponents—including Koch Industries and their allied Americans for Prosperity—worked to weaken support for the policy. They backed politicians in primaries and appointments that were anti-renewables, and they funded astroturfing campaigns. Advocates responded by organizing the public, but they were less politically influential— particularly after the Republican Party made supporting the clean energy rollback a requirement for election funding. Despite the established wind energy industry backing pro-renewable Republicans in primaries, the fossil fuel opponents were eventually able to retrench the law.

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Wood, D. A. « Solar Energy and its Multiple Applications ». Dans Materials Research Foundations, 134–48. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901410-6.

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Solar energy is commercially exploited to provide benefits in the form of various products and capabilities applying a range of technologies. Electricity generation is achieved either directly from photovoltaic cells made of various materials or indirectly through the steam production from concentrating solar thermal systems. Whereas solar thermal power generation requires large scale plants, photovoltaic systems can be large or small in scale and building integrated, if required. Both types of generation can be standalone or connected to power grids. Solar energy is also extensively used for water and space heating, cooling and drying purposes. It can also be stored and/or transformed into a range of clean fuels and contributes energy to the manufacture of various energy-intensive products. The research into the artificial photosynthetic synthesis of biofuels although encouraging is, however, yet to be achieved commercially exploited on a large scale. Much scope remains for innovative technology breakthroughs to further improve the efficiency and uptake of all the solar energy technologies currently exploited or under investigation. Policy frameworks, renewable portfolio standards, feed-in tariffs and net-metering play an important and ongoing role in promoting the uptake of photovoltaics in particular.

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Stokes, Leah Cardamore. « Introduction ». Dans Short Circuiting Policy, 1–34. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190074258.003.0001.

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Chapter 1 introduces the book, providing the framework for the theory. It explains policy feedback theory and its limitations. Next, it provides an overview of the book’s theory, which places interest group combat at the center of policy change. It unpacks the theory of the fog of enactment and explains why implementation matters for policy feedback. It then explains how retrenchment can occur both directly—through legislators and regulators—and indirectly—through the parties, the public, and the courts. The chapter also introduces the main policies examined in the book: renewable portfolio standards and net metering laws. It explains why the US electricity system is not building renewable energy fast enough and why alternative technologies face significant barriers to adoption. It concludes with an overview of the entire book, with chapter-by-chapter summaries.

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Actes de conférences sur le sujet "Renewable energy, Energy policy, Portfolio optimization"

Chandramowli, Shankar N., Frank A. Felder et Xiaojun G. Shan. « Assessing the Policy Interaction Effect of Renewable Portfolio Standards (RPS) and Clean Power Plan (CCP) Emissions Goals for States in the U.S. Northeast ». Dans ASME 2016 10th International Conference on Energy Sustainability collocated with the ASME 2016 Power Conference and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/es2016-59501.

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With the proposed Clean Power Plan for regulating carbon emissions from the power sector in the U.S, policymakers are likely to use a cost optimization framework to plan for future scenarios and implementation strategies. The modeling framework introduced in this paper would help such policymakers to make the appropriate investment decisions for the power sector. This paper applies an analytical model and an optimization model to investigate the implications of coimplementing an emission cap and a Renewable Portfolio Standards (RPS) policy for the U.S. Northeast. A simplified analytical model is specified and the first order optimality conditions are derived. The results from the analytical model are verified by running simulations using LP-CEM, a linear programming-based supply cost optimization model. The LP-CEM simulation results are analyzed under the recently proposed Clean Power Plan emissions cap rules and RPS scenarios for the U.S. Northeast region. The marginal abatement cost estimates, derived from a limited set of LP-CEM runs, are analyzed and compared to the theoretical results. For encouraging renewables generation, an RPS instrument is cost-effective at higher policy targets, while an emissions cap instrument is cost-effective at lower policy targets. For CO2 emissions reduction, an emissions cap instrument is found be cost-effective for all policy targets. There is a trade-off between emissions levels and supply costs when the two instruments are co-implemented.

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Lin, Xiaofan, Wanqing Chen, Han Chen, Jinchun Chen, Simin Chen et Guannan Chen. « Optimization Decision Model of Electricity Market under Renewable Portfolio Standard ». Dans 2021 11th International Conference on Power and Energy Systems (ICPES). IEEE, 2021. http://dx.doi.org/10.1109/icpes53652.2021.9683839.

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Ali, Amjad, Fahad A. Alsulaiman, Kashif Irshad, Md Shafiullah, Sheraz Alam Malik et Abdul Hameed Memon. « Renewable Portfolio Standard from the Perspective of Policy Network Theory for Saudi Arabia Vision 2030 Targets ». Dans 2021 4th International Conference on Energy Conservation and Efficiency (ICECE). IEEE, 2021. http://dx.doi.org/10.1109/icece51984.2021.9406286.

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Mohan, Vivek, Jai Govind Singh et Weerakorn Ongsakul. « Sortino ratio based portfolio optimization considering EVs and renewable energy in microgrid power market ». Dans 2017 IEEE Power & Energy Society General Meeting (PESGM). IEEE, 2017. http://dx.doi.org/10.1109/pesgm.2017.8274115.

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Qiao, Lupeng, Ling Dong, Tianwen Zheng et Laijun Chen. « Two-stage Robust optimization Method for Day-ahead Scheduling Considering Renewable Portfolio Standard ». Dans 2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC). IEEE, 2019. http://dx.doi.org/10.1109/appeec45492.2019.8994687.

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Zhu, Tao, Di Hai, Shengchao Zhou, Ruiying Zhang, Ziheng Yan et Minghe Wu. « Proximal Policy Optimization for Volt-VAR Control in Distribution Networks with Renewable Energy Resources ». Dans 2021 IEEE Sustainable Power and Energy Conference (iSPEC). IEEE, 2021. http://dx.doi.org/10.1109/ispec53008.2021.9735483.

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Haltiwanger, Julia F., Jane H. Davidson et Elizabeth J. Wilson. « Renewable Hydrogen From the Zn/ZnO Solar Thermochemical Cycle : A Cost and Policy Analysis ». Dans ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90196.

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Flexible energy carriers are a crucial element of our energy portfolio. In a future in which a significant fraction of our energy comes from renewable sources, renewably produced fuels will be vital. The zinc/zinc-oxide thermochemical redox cycle is one approach for producing hydrogen using solar energy. This paper explores the level of carbon taxation necessary to make the cycle competitive with hydrogen production via methane reforming. In addition, the time frame for economic viability is assessed through the use of experience curves under minimal input, mid-range, and aggressive incentive policy scenarios. Prior work projects that hydrogen produced by the zinc/zinc-oxide cycle will cost between $5.02 and $14.75/kg, compared to $2.40 to $3.60/kg for steam methane reforming. Overcoming this cost difference would require a carbon tax of $119 to $987/tCO2, which is significantly higher than is likely to be implemented in most countries. For the technology to become cost competitive, incentive policies that lead to early implementation of solar hydrogen plants will be necessary to allow the experience effect to draw down the price. Under such policies, a learning curve analysis suggests that hydrogen produced via the Zn/ZnO cycle could become economically viable between 2032 and 2069, depending on how aggressively the policies encourage the emerging technology. Thus, the Zn/ZnO cycle has the potential to be economically viable by mid-century if incentive policies—such as direct financial support, purchase guarantees, low interest rate loans, and tax breaks—are used to support initial projects.

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Sclafani, Anthony. « Analysis of Carbon Dioxide Emission Reductions From Energy Efficiency Upgrades in Consideration of Climate Change and Renewable Energy Policy Initiatives Using eQUEST ». Dans ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90143.

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In January 2008 the Governor of Hawaii announced the Hawaii Clean Energy Initiative; an initiative that aims to have at least 70 percent of Hawaii’s power come from clean energy by 2030 [4]. In July 2009, the Hawaii Department of Accounting and General Services awarded NORESCO, an energy service company, a $33.9M contract to improve the energy efficiency of 10 government buildings. The avoided utility cost of the energy and water savings from the improvements is the project funding mechanism. The energy savings realized by the project will reduce carbon dioxide emissions associated with utility power generation. However, as renewable energy becomes a larger portion of the utility generation profile through the Hawaii Clean Energy Initiative, the carbon dioxide emissions reductions from specific energy efficiency measures may erode over time. This work presents a method of analysis to quantify the carbon dioxide emissions reduction over the life of a project generated by energy efficiency upgrades that accounts for both the impact of policy initiatives and climate change using DOE-2/eQUEST. The analysis is based on the fact that HVAC energy usage will vary with climate changes and that carbon dioxide emission reductions will vary with both energy savings and the corresponding utility’s power generation portfolio. The energy savings related to HVAC system energy efficiency improvements are calculated over the life of a 20 year performance contract using a calibrated DOE-2/eQUEST model of an existing building that utilizes weather data adjusted to match the predictions of the Intergovernmental Panel on Climate Change. The carbon dioxide emissions reductions are calculated using the energy savings results and a projection of the implementation of the Hawaii Clean Energy Initiative. The emissions reductions are compared with other analysis methods and discussed to establish more refined expectations of the impact of energy efficiency projects in context with climate changes and policy initiatives.

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Rahmat, Ade, Adi Kurniawan et Yusmar. « Challenges and Strategies to Reduce Cost of Production in Isolated Electricity Systems with Optimization of Renewable Energy at Central Sulawesi ». Dans 2020 International Conference on Technology and Policy in Energy and Electric Power (ICT-PEP). IEEE, 2020. http://dx.doi.org/10.1109/ict-pep50916.2020.9249831.

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Yusmar, Ade Rahmat et Muhammad Wardi Hadi. « Optimization Analysis of Hybrid Power Plants by Utilizing Renewable Energy Resources in the Ulunambo Isolation System in Menui Islands, Central Sulawesi ». Dans 2021 International Conference on Technology and Policy in Energy and Electric Power (ICT-PEP). IEEE, 2021. http://dx.doi.org/10.1109/ict-pep53949.2021.9601123.

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