1,568 research outputs found

    Electricity market design for the prosumer era

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    Prosumers are agents that both consume and produce energy. With the growth in small and medium-sized agents using solar photovoltaic panels, smart meters, vehicle-to-grid electric automobiles, home batteries and other ‘smart’ devices, prosuming offers the potential for consumers and vehicle owners to re-evaluate their energy practices. As the number of prosumers increases, the electric utility sector of today is likely to undergo significant changes over the coming decades, offering possibilities for greening of the system, but also bringing many unknowns and risks that need to be identified and managed. To develop strategies for the future, policymakers and planners need knowledge of how prosumers could be integrated effectively and efficiently into competitive electricity markets. Here we identify and discuss three promising potential prosumer markets related to prosumer grid integration, peer-to-peer models and prosumer community groups. We also caution against optimism by laying out a series of caveats and complexities

    Net Gains: A Handbook for Network Builders Seeking Social Change

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    This handbook provides the growing number of people who are developing networks for social change with practical advice based on the experiences of network builders, case studies of networks small and large, local and international, and emerging scientific knowledge about "connectivity." It is intended to join, complement, and spur other efforts to capture and make widely available what is being learned in the business, government, and civil sectors about why and how to use networks, rather than solitary organizations, to generate large-scale impact

    Trends in Smart City Development

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    This report examines the meanings and practices associated with the term 'smart cities.' Smart city initiatives involve three components: information and communication technologies (ICTs) that generate and aggregate data; analytical tools which convert that data into usable information; and organizational structures that encourage collaboration, innovation, and the application of that information to solve public problems

    Solar Urban Planning: Addressing barriers and conflicts specific to Renewable Energy Policy and the current field and practice of Urban Planning within the context of a changing Climate

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    The world is in a period of rapid urbanization while experiencing unprecedented rise in global temperature as a result of climate change. Questions have been raised as to how strategies for urbanization will be able to address the fetish for energy, while halting carbon emissions produced by traditional energy sources for urban inhabitants around the world. First, this paper seeks to look to cities, at the intersection of solar energy and the field of urban planning, looking into the opportunities and challenges that are currently surfacing. Conflicts and barriers in traditional urban land use patterns emerge as a topic of discussion alongside urban morphologies and constraints posed towards a broad-reaching application of solar energy in dense cities, both domestically in the United States, and by way of international case studies. Conflicts in land use practice along with community level net zero benchmarking are discussed as well to better understand tools for progress in urban planning addressing climate change mitigation. Additionally, local action and the impacts of Green Communities Legislation are investigated alongside the need for Federal action such as bold renewable energy portfolio standards as macro policy solutions. Lastly, the conflict between the traditional role for utilities and the emergence of distributed generation technologies and subsequent policy support including the potential impact of micro grids, are included in an analysis of the energy production and delivery system for the urban environment at present. Within this paper, two in-person qualitative interviews are included to bring perspectives from active professionals and policymakers into the research. New thinking and conclusions illustrate the need for specific policy action across local, state, and federal spheres, and the need for urban planners and urban practitioners to act with intention and rapidity relating to the climate imperative

    Techniques, Taxonomy, and Challenges of Privacy Protection in the Smart Grid

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    As the ease with which any data are collected and transmitted increases, more privacy concerns arise leading to an increasing need to protect and preserve it. Much of the recent high-profile coverage of data mishandling and public mis- leadings about various aspects of privacy exasperates the severity. The Smart Grid (SG) is no exception with its key characteristics aimed at supporting bi-directional information flow between the consumer of electricity and the utility provider. What makes the SG privacy even more challenging and intriguing is the fact that the very success of the initiative depends on the expanded data generation, sharing, and pro- cessing. In particular, the deployment of smart meters whereby energy consumption information can easily be collected leads to major public hesitations about the tech- nology. Thus, to successfully transition from the traditional Power Grid to the SG of the future, public concerns about their privacy must be explicitly addressed and fears must be allayed. Along these lines, this chapter introduces some of the privacy issues and problems in the domain of the SG, develops a unique taxonomy of some of the recently proposed privacy protecting solutions as well as some if the future privacy challenges that must be addressed in the future.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/111644/1/Uludag2015SG-privacy_book-chapter.pd

    Towards transactive energy systems: An analysis on current trends

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    This paper presents a comprehensive analysis on the latest advances in transactive energy systems. The main contribution of this work is centered on the definition of transactive energy concepts and how such systems can be implemented in the smart grid paradigm. The analyzed works have been categorized into three lines of research: (i) transactive network management; (ii) transactive control; and (iii) peer-to-peer markets. It has been found that most of the current approaches for transactive energy are available as a model, lacking the real implementation to have a complete validation. For that purpose, both scientific and practical aspects of transactive energy should be studied in parallel, implementing adequate simulation platforms and tools to scrutiny the results.This work has received funding from the European Union's Horizon 2020 research and innovation programme under project DOMINOES (grant agreement No. 771066) and from FEDER Funds through COMPETE program and from National Funds through FCT under the project UID/EEA/00760/2019.info:eu-repo/semantics/publishedVersio

    Hydrodynamics-Biology Coupling for Algae Culture and Biofuel Production

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    International audienceBiofuel production from microalgae represents an acute optimization problem for industry. There is a wide range of parameters that must be taken into account in the development of this technology. Here, mathematical modelling has a vital role to play. The potential of microalgae as a source of biofuel and as a technological solution for CO2 fixation is the subject of intense academic and industrial research. Large-scale production of microalgae has potential for biofuel applications owing to the high productivity that can be attained in high-rate raceway ponds. We show, through 3D numerical simulations, that our approach is capable of discriminating between situations where the paddle wheel is rapidly moving water or slowly agitating the process. Moreover, the simulated velocity fields can provide lagrangian trajectories of the algae. The resulting light pattern to which each cell is submitted when travelling from light (surface) to dark (bottom) can then be derived. It will then be reproduced in lab experiments to study photosynthesis under realistic light patterns
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