The Experts below are selected from a list of 56994 Experts worldwide ranked by ideXlab platform
Henrik Lund - One of the best experts on this subject based on the ideXlab platform.
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roles of local and National Energy Systems in the integration of renewable Energy
Applied Energy, 2016Co-Authors: Jakob Zinck Thellufsen, Henrik LundAbstract:In the transition to renewable Energy Systems, National plans are being created for several countries around the world. Concurrently, regions, municipalities and cities are planning for CO2 neutral and renewable Energy Systems. Both developments are necessary, which raises the question whether these two types of Energy planning are coordinated. How should National plans specify local actions, and how should local plans take into account the surrounding development of the Energy system? Most local plans rely on the surrounding Energy Systems as they need to integrate with the Energy system to export excess production or import during demands with insufficient capacity. This paper suggests a methodology to analyse how well these local plans integrate with the surrounding National Energy system. The methodology is applied to the two Danish examples of Copenhagen and Sonderborg. Both examples connect to the Danish 2030 scenario defined in the Coherent Energy and Environmental System Analysis study. Based on the results the study concludes that the suggested methodology is applicable for evaluating how well local and National Energy Systems integrate, and can potentially be used in bettering Energy planning to include the benefits of local action and National coordination.
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heat roadmap europe identifying the balance between saving heat and supplying heat
Energy, 2016Co-Authors: Kenneth Hansen, Henrik Lund, David Connolly, David William Drysdale, Jakob Zinck ThellufsenAbstract:The cost of heat savings in buildings increase as more heat savings are achieved and hence, alternatives other than savings typically become more economically feasible at a certain level of heat reductions. The challenge addressed in this paper is to identify when the cost of heat savings become more expensive than the cost of sustainable heat supply, so society does not overinvest in heat saving measures. This study first investigates the heat saving potentials for different countries in Europe, along with their associated costs, followed by a comparison with alternative ways of supplying sustainable heating. Furthermore, the levelised cost of supplying sustainable heat is estimated for both a single technology and from an Energy system perspective. The results are analysed by assessing various parameters such as socio-economic costs and Energy efficiency improvements in the National Energy Systems. The results demonstrate the economically feasible levels of heat savings and heat production for various European countries, highlighting differences in their National conditions and Energy Systems. The findings in this paper indicate that overinvestments in heat savings can be avoided by saving heat until a level around 30–50% of projected heat demands and supplying the remaining heat demand with sustainable heat sources.
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a review of computer tools for analysing the integration of renewable Energy into various Energy Systems
Applied Energy, 2010Co-Authors: David Connolly, Henrik Lund, Brian Vad Mathiesen, Martin J LeahyAbstract:Abstract This paper includes a review of the different computer tools that can be used to analyse the integration of renewable Energy. Initially 68 tools were considered, but 37 were included in the final analysis which was carried out in collaboration with the tool developers or recommended points of contact. The results in this paper provide the information necessary to identify a suitable Energy tool for analysing the integration of renewable Energy into various Energy-Systems under different objectives. It is evident from this paper that there is no Energy tool that addresses all issues related to integrating renewable Energy, but instead the ‘ideal’ Energy tool is highly dependent on the specific objectives that must be fulfilled. The typical applications for the 37 tools reviewed (from analysing single-building Systems to National Energy-Systems), combined with numerous other factors such as the Energy-sectors considered, technologies accounted for, time parameters used, tool availability, and previous studies, will alter the perception of the ‘ideal’ Energy tool. In conclusion, this paper provides the information necessary to direct the decision-maker towards a suitable Energy tool for an analysis that must be completed.
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the role of compressed air Energy storage caes in future sustainable Energy Systems
Energy Conversion and Management, 2009Co-Authors: Henrik Lund, Georges Garabeth SalgiAbstract:Future sustainable Energy Systems call for the introduction of integrated storage technologies. One of these technologies is compressed air Energy storage (CAES). In Denmark at present, wind power meets 20% and combined heat and power production (CHP) meets 50% of the electricity demand. Based on these figures, the paper assesses the value of integrating CAES into future sustainable Energy Systems with even higher shares of fluctuating renewable Energy sources. The evaluation is made on the basis of detailed Energy system analyses in which the supply of complete National Energy Systems is calculated hour by hour in relation to the demands during a year. The Danish case is evaluated in a system-economic perspective by comparing the economic benefits achieved by improving the integration of wind power to the costs of the CAES technology. The result is compared to various other storage options. Furthermore, a business-economic evaluation is done by calculating the potential income of the CAES technology from both spot markets and regulating power markets. The evaluation includes both historical hour by hour prices during a 7-year period on the Nordic Nord Pool market as well as expected future price variations. The conclusion is that even in Energy Systems with very high shares of wind power and CHP, neither the historical nor the expected future price variations on the spot market alone can justify the investment in CAES Systems. Other storage technology options are significantly more feasible. CAES may operate both on the spot market and the regulating power market, which indicates potential feasibility. However, such strategy is highly risky because of the small extent of the regulating power market and if CAES is to become feasible it will depend on incomes from auxiliary services.
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integration of renewable Energy into the transport and electricity sectors through v2g
Energy Policy, 2008Co-Authors: Henrik Lund, Willett KemptonAbstract:Abstract Large-scale sustainable Energy Systems will be necessary for substantial reduction of CO 2 . However, large-scale implementation faces two major problems: (1) we must replace oil in the transportation sector, and (2) since today's inexpensive and abundant renewable Energy resources have fluctuating output, to increase the fraction of electricity from them, we must learn to maintain a balance between demand and supply. Plug-in electric vehicles (EVs) could reduce or eliminate oil for the light vehicle fleet. Adding “vehicle-to-grid” (V2G) technology to EVs can provide storage, matching the time of generation to time of load. Two National Energy Systems are modelled, one for Denmark, including combined heat and power (CHP) and the other a similarly sized country without CHP (the latter being more typical of other industrialized countries). The model (EnergyPLAN) integrates Energy for electricity, transport and heat, includes hourly fluctuations in human needs and the environment (wind resource and weather-driven need for heat). Four types of vehicle fleets are modelled, under levels of wind penetration varying from 0% to 100%. EVs were assumed to have high power (10 kW) connections, which provide important flexibility in time and duration of charging. We find that adding EVs and V2G to these National Energy Systems allows integration of much higher levels of wind electricity without excess electric production, and also greatly reduces National CO 2 emissions.
Andreas Loschel - One of the best experts on this subject based on the ideXlab platform.
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invention in Energy technologies comparing Energy efficiency and renewable Energy inventions at the firm level
Energy Policy, 2015Co-Authors: Sascha Rexhauser, Andreas LoschelAbstract:Abstract Many countries, especially in Europe, have ambitious goals to transform their National Energy Systems towards renewable energies. Technological change in both renewable production and efficient use of Energy can help us to make these targets come true. Using a panel of German firms linked to the PATSTAT patent data, we study inventions in both types of Energy technologies and investigate the role prior inventions as technology-push factors play for both types of technologies. In addition and more importantly, we study whether previous inventions in non-Energy technologies also stimulate technical change in Energy technologies and whether this effect differs between Energy conservation and renewable Energy technologies.
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invention in Energy technologies comparing Energy efficiency and renewable Energy inventions at the firm level
Research Papers in Economics, 2014Co-Authors: Sascha Rexhauser, Andreas LoschelAbstract:Many countries, especially in Europe, have ambitious goals to transform their National Energy Systems towards renewable energies. Technological change in both renewable production and efficient use of Energy can help to make these targets come true. Using a panel of German firms linked to the PATSTAT patent data, we study invention in both types of Energy technologies and how their inventors differ in terms of central firm-specific characteristics. More importantly, we study the relation between conventional (i.e. non-Energy) invention and Energy invention within the firms. The results from dynamic count data models point to a stimulating effect of conventional inventions for Energy efficiency technologies but have no effect on inventions in renewable energies.
Sascha Rexhauser - One of the best experts on this subject based on the ideXlab platform.
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invention in Energy technologies comparing Energy efficiency and renewable Energy inventions at the firm level
Energy Policy, 2015Co-Authors: Sascha Rexhauser, Andreas LoschelAbstract:Abstract Many countries, especially in Europe, have ambitious goals to transform their National Energy Systems towards renewable energies. Technological change in both renewable production and efficient use of Energy can help us to make these targets come true. Using a panel of German firms linked to the PATSTAT patent data, we study inventions in both types of Energy technologies and investigate the role prior inventions as technology-push factors play for both types of technologies. In addition and more importantly, we study whether previous inventions in non-Energy technologies also stimulate technical change in Energy technologies and whether this effect differs between Energy conservation and renewable Energy technologies.
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invention in Energy technologies comparing Energy efficiency and renewable Energy inventions at the firm level
Research Papers in Economics, 2014Co-Authors: Sascha Rexhauser, Andreas LoschelAbstract:Many countries, especially in Europe, have ambitious goals to transform their National Energy Systems towards renewable energies. Technological change in both renewable production and efficient use of Energy can help to make these targets come true. Using a panel of German firms linked to the PATSTAT patent data, we study invention in both types of Energy technologies and how their inventors differ in terms of central firm-specific characteristics. More importantly, we study the relation between conventional (i.e. non-Energy) invention and Energy invention within the firms. The results from dynamic count data models point to a stimulating effect of conventional inventions for Energy efficiency technologies but have no effect on inventions in renewable energies.
Brian Vad Mathiesen - One of the best experts on this subject based on the ideXlab platform.
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Comprehensive assessment of the role and potential for solar thermal in future Energy Systems
Solar Energy, 2018Co-Authors: Kenneth Hansen, Brian Vad MathiesenAbstract:The European Union has set targets to increase the share of renewable Energy in the coming years. Solar thermal Energy is currently expanding and could possibly contribute to achieving the European targets. This paper evaluates the potentials of solar thermal Energy from an Energy system perspective along with the impacts of installing these potential for four European National Energy Systems; Germany, Austria, Italy and Denmark. The potentials are evaluated by applying Energy system analysis of existing and future Energy Systems under different conditions such as substantial heat savings, expansion of district heating networks and with high-renewable electricity and heating sectors. The findings in this paper indicate that the National solar thermal potentials are in the range of 3-12% of the total heat supply and that installing the potentials will impact the Energy system according to the Energy system configurations. Solar thermal benefits reduce when moving towards a high-renewable Energy system as other renewable Energy sources start competing with solar thermal on Energy prices and Energy system flexibility. The findings can be applied to a diversity of Energy Systems also beyond the country cases of the study. The role of solar thermal should be to reduce the pressure on scarce renewable resources and to supply renewable Energy in conditions where no alternatives are available.
Ali Kharrazi - One of the best experts on this subject based on the ideXlab platform.
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examining the resilience of National Energy Systems measurements of diversity in production based and consumption based electricity in the globalization of trade networks
Energy Policy, 2015Co-Authors: Ali Kharrazi, Masahiro Sato, Masaru Yarime, Hirofumi Nakayama, Steven B KrainesAbstract:Abstract Energy is a critical component of achieving sustainable development. In addition to the three aspects of promoting access, renewables, and efficiency, the dimension of resilience in Energy Systems should also considered. The implementation of resilient Energy Systems requires a quantitative understanding of the socio-economic practices underlying such Systems. Specifically, in line with the increasing globalization of trade, there remains a critical knowledge gap on the link between embodied Energy in the production and consumption of traded goods. To bridge this knowledge gap, we investigate the resilience of global Energy Systems through an examination of a diversity measure of global embodied electricity trade based on multi-regional input-output (MRIO) networks. The significance of this research lies in its ability to utilize high resolution MRIO data sets in assessing the resilience of National Energy Systems. This research indicates that secure and responsible consumption requires the diversification of not only Energy generation but also Energy imports. This research will lay the ground for further research in the governance of resilience in global Energy networks.
