@article{BrandenbergHuberSilbernagl2016, author = {Brandenberg, Ren{\´e} and Huber, Matthias and Silbernagl, Matthias}, title = {The summed start-up costs in a unit commitment problem}, volume = {5}, journal = {EURO Journal on Computational Optimization}, number = {1-2}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2192-4406}, doi = {https://doi.org/10.1007/s13675-016-0062-2}, pages = {203 -- 238}, year = {2016}, language = {en} } @article{SilbernaglHuberBrandenberg2015, author = {Silbernagl, Matthias and Huber, Matthias and Brandenberg, Ren{\´e}}, title = {Improving Accuracy and Efficiency of Start-Up Cost Formulations in MIP Unit Commitment by Modeling Power Plant Temperatures}, volume = {31}, journal = {IEEE Transactions on Power Systems}, number = {4}, publisher = {IEEE}, address = {New York}, issn = {1558-0679}, doi = {https://doi.org/10.1109/TPWRS.2015.2450776}, pages = {2578 -- 2586}, year = {2015}, language = {en} } @inproceedings{HuberSilbernagl2015, author = {Huber, Matthias and Silbernagl, Matthias}, title = {Modeling Start-Up Times in Unit Commitment by Limiting Temperature Increase and Heating}, booktitle = {2015 12th International Conference on the European Energy Market (EEM)}, publisher = {IEEE}, address = {Piscataway}, isbn = {978-1-4673-6692-2}, doi = {https://doi.org/10.1109/EEM.2015.7216755}, year = {2015}, language = {en} } @inproceedings{BiankHuberMeyeretal.2019, author = {Biank, Sanjana and Huber, Werner and Meyer, Matthias and Hof, Hans-Joachim and Hempen, Thomas}, title = {Model-based security and safety assurance for automotive safety systems}, booktitle = {Proceedings of 3. ACM Computer Science in Cars Symposium (CSCS 2019)}, subtitle = {Extended Abstract}, publisher = {ACM}, address = {New York}, url = {https://acm-cscs.org/_/2019/}, year = {2019}, language = {en} } @article{KueppersParedesPinedaMetzgeretal.2021, author = {K{\"u}ppers, Martin and Paredes Pineda, Stephany Nicole and Metzger, Michael and Huber, Matthias and Paulus, Simon and Heger, Hans J{\"o}rg and Niessen, Stefan}, title = {Decarbonization pathways of worldwide energy systems - Definition and modeling of archetypes}, volume = {2021}, pages = {116438}, journal = {Applied Energy}, number = {285}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-9118}, doi = {https://doi.org/10.1016/j.apenergy.2021.116438}, year = {2021}, language = {en} } @article{MetzgerDuckheimFrankenetal.2021, author = {Metzger, Michael and Duckheim, Mathias and Franken, Marco and Heger, Hans J{\"o}rg and Huber, Matthias and Knittel, Markus and Kolster, Till and K{\"u}ppers, Martin and Meier, Carola and Most, Dieter and Paulus, Simon and Wyrwoll, Lothar and Moser, Albert and Niessen, Stefan}, title = {Pathways toward a Decarbonized Future — Impact on Security of Supply and System Stability in a Sustainable German Energy System}, volume = {14}, pages = {560}, journal = {Energies}, number = {3}, publisher = {MDPI}, address = {Basel}, issn = {1996-1073}, doi = {https://doi.org/10.3390/en14030560}, year = {2021}, abstract = {Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.Pathways leading to a carbon neutral future for the German energy system have to deal with the expected phase-out of coal-fired power generation, in addition to the shutdown of nuclear power plants and the rapid ramp-up of photovoltaics and wind power generation. An analysis of the expected impact on electricity market, security of supply, and system stability must consider the European context because of the strong coupling—both from an economic and a system operation point of view—through the cross-border power exchange of Germany with its neighbors. This analysis, complemented by options to improve the existing development plans, is the purpose of this paper. We propose a multilevel energy system modeling, including electricity market, network congestion management, and system stability, to identify challenges for the years 2023 and 2035. Out of the results, we would like to highlight the positive role of innovative combined heat and power (CHP) solutions securing power and heat supply, the importance of a network congestion management utilizing flexibility from sector coupling, and the essential network extension plans. Network congestion and reduced security margins will become the new normal. We conclude that future energy systems require expanded flexibilities in combination with forward planning of operation.}, language = {en} } @inproceedings{HusarekPaulusHuberetal.2019, author = {Husarek, Dominik and Paulus, Simon and Huber, Matthias and Metzger, Michael and Niessen, Stefan}, title = {The Contribution of Carbon-optimized Battery Electric Vehicle Charging to the Decarbonization of a Multi-modal Energy System}, booktitle = {3rd E-Mobility Power System Integration Symposium: digital proceedings}, editor = {Betancourt, Uta and Ackermann, Thomas}, publisher = {Energynautics GmbH}, address = {Darmstadt}, isbn = {978-3-9820080-3-5}, url = {https://colab.energynautics.com/index.php/s/Hscxs6FX24afbT8/download}, year = {2019}, language = {en} } @inproceedings{KueppersMetzgerHuberetal.2019, author = {K{\"u}ppers, Martin and Metzger, Michael and Huber, Matthias and Paulus, Simon}, title = {Archetypes of Country Energy Systems}, booktitle = {2019 IEEE Milan PowerTech}, publisher = {IEEE}, address = {Piscataway (NJ)}, isbn = {978-1-5386-4722-6}, doi = {https://doi.org/10.1109/PTC.2019.8810765}, year = {2019}, language = {en} } @inproceedings{MuellerFalkeHoffrichteretal.2019, author = {M{\"u}ller, Christoph H. and Falke, Tobias and Hoffrichter, Andr{\´e} and Wyrwoll, Lothar and Schmitt, Carlo and Trageser, Marc and Schnettler, Armin and Metzger, Michael and Huber, Matthias and K{\"u}ppers, Martin and Most, Dieter and Paulus, Simon and Heger, Hans J{\"o}rg}, title = {Integrated Planning and Evaluation of Multi-Modal Energy Systems for Decarbonization of Germany}, volume = {2019}, booktitle = {Energy Procedia}, number = {158}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1876-6102}, doi = {https://doi.org/10.1016/j.egypro.2019.01.923}, pages = {3487}, year = {2019}, abstract = {For a successful realization of the energy transition and a reduction of greenhouse gas emissions, an integrated view of multiple energy sectors (electricity, heat and mobility) is necessary. The coupling of different energy sectors is seen as an option to achieve the climate goals in a cost-effective way. In this paper, a methodical approach for multi-modal energy system planning and technology impact evaluation is presented. A key feature of the model is a coupled consideration of sectors electricity, heat and mobility. Energy demands, conversion and storage technologies in households, the Commerce, Trade and Services (CTS) area and the industry are modelled employing a bottom-up modelling approach. The model can be used for the calculation of a detailed transition pathway of energy systems taking into account politically defined climate goals. Based on these calculations, in-depth analyses of energy markets as well as transmission and distribution grids can be performed.}, language = {en} } @inproceedings{MuellerHoffrichterWyrwolletal.2019, author = {M{\"u}ller, Christoph H. and Hoffrichter, Andr{\´e} and Wyrwoll, Lothar and Schmitt, Carlo and Trageser, Marc and Kulms, Tom and Beulertz, Daniel and Metzger, Michael and Duckheim, Mathias and Huber, Matthias and K{\"u}ppers, Martin and Most, Daniel and Paulus, Simon and Heger, Hans J{\"o}rg and Schnettler, Armin}, title = {Modeling framework for planning and operation of multi-modal energy systems in the case of Germany}, volume = {2019}, booktitle = {Applied Energy}, number = {250}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-9118}, doi = {https://doi.org/10.1016/j.apenergy.2019.05.094}, pages = {1132 -- 1146}, year = {2019}, language = {en} } @inproceedings{WalterHuberKueppersetal.2019, author = {Walter, Oliver and Huber, Matthias and K{\"u}ppers, Martin and Tremel, Alexander and Becker, Stefan}, title = {Energy system design for deep decarbonization of a sunbelt city by using a hybrid storage approach}, booktitle = {Proceedings of the 13th International Renewable Energy Storage Conference 2019 (IRES 2019)}, editor = {Trimborn, Christoph and Stadler, Ingo}, publisher = {Atlantis Press}, address = {Dordrecht}, isbn = {978-94-6252-836-9}, issn = {2589-4943}, doi = {https://doi.org/10.2991/ires-19.2019.23}, pages = {183 -- 190}, year = {2019}, abstract = {With continuously falling cost of renewable power generation and ambitious decarbonization targets, renewable sources are about to rival fossil fuels for energy supply. For a high share of fluctuating renewable generation, large-scale energy storage is likely to be required. In addition to selling electricity, the reliable supply of heat and cold is a further interesting revenue pool, which makes hybrid storage technologies an interesting option. The main feature of hybrid energy storage - as defined here - is to offer charging and especially discharging in different forms of energy by combining different charging, discharging and storage devices. They can address various demands (e.g. electricity and cold) simultaneously. Two hybrid storages, pumped thermal energy storage (PTES) and power-to-heat-to-x (x: heat and/or electricity) energy storage (PHXES), are investigated based on a techno-economic analysis within this work. Both hybrid storage technologies are charged with electricity and can supply heat and electricity during discharging. They are implemented into a simplified energy system model of a prototype city in the earth's sunbelt in the year 2030 to find a cost-optimal configuration. Different cases are evaluated: a power-to-power case (P2P), where only an electric demand must be addressed and a power-to-power-and-cooling (P2P\&C) case, where the electric demand from the P2P case is divided into a residual electric demand and a cooling demand. For both cases, a natural gas-based benchmark scenario and a decarbonized, renewable-based scenario including the hybrid energy storage technologies are calculated. Both, total expenditures and CO2 emissions are lower in the P2P\&C scenarios compared to P2P scenarios. PHXES plays a major role in both cases. PTES is part of the cost-optimal solution in the P2P\&C decarb scenario, only if its specific cost are further decreased.}, language = {en} } @article{KueppersPerauFrankenetal.2020, author = {K{\"u}ppers, Martin and Perau, Christian and Franken, Marco and Heger, Hans J{\"o}rg and Huber, Matthias and Metzger, Michael and Niessen, Stefan}, title = {Data-Driven Regionalization of Decarbonized Energy Systems for Reflecting Their Changing Topologies in Planning and Optimization}, volume = {13}, pages = {4076}, journal = {Energies}, number = {16}, publisher = {MDPI}, address = {Basel}, issn = {1996-1073}, doi = {https://doi.org/10.3390/en13164076}, year = {2020}, abstract = {The decarbonization of energy systems has led to a fundamental change in their topology since generation is shifted to locations with favorable renewable conditions. In planning, this change is reflected by applying optimization models to regions within a country to optimize the distribution of generation units and to evaluate the resulting impact on the grid topology. This paper proposes a globally applicable framework to find a suitable regionalization for energy system models with a data-driven approach. Based on a global, spatially resolved database of demand, generation, and renewable profiles, hierarchical clustering with fine-tuning is performed. This regionalization approach is applied by modeling the resulting regions in an optimization model including a synthesized grid. In an exemplary case study, South Africa's energy system is examined. The results show that the data-driven regionalization is beneficial compared to the common approach of using political regions. Furthermore, the results of a modeled 80\% decarbonization until 2045 demonstrate that the integration of renewable energy sources fundamentally changes the role of regions within South Africa's energy system. Thereby, the electricity exchange between regions is also impacted, leading to a different grid topology. Using clustered regions improves the understanding and analysis of regional transformations in the decarbonization process.}, language = {en} } @article{HuberNamockelRezguietal.2021, author = {Huber, Matthias and Namockel, Nils and Rezgui, Rim and K{\"u}ppers, Martin and Heger, Hans J{\"o}rg}, title = {Electrification seeds - A flexible approach for decentralized electricity supply in developing countries}, volume = {2021}, journal = {Energy for Sustainable Development}, number = {62}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2352-4669}, doi = {https://doi.org/10.1016/j.esd.2021.04.001}, pages = {176 -- 185}, year = {2021}, language = {en} } @inproceedings{DeetjenWebberHuber2017, author = {Deetjen, Thomas A. and Webber, Michael E. and Huber, Matthias}, title = {Optimizing capacity extensions in power systems: a case study of Bavaria and a comparison to Texas}, booktitle = {2017 14th International Conference on the European Energy Market (EEM)}, publisher = {IEEE}, address = {Piscataway}, isbn = {978-1-5090-5499-2}, doi = {https://doi.org/10.1109/EEM.2017.7981908}, year = {2017}, language = {en} } @article{MatthiasSchuellerStoecklietal.2018, author = {Matthias, Huber and Sch{\"u}ller, Simone and St{\"o}ckli, Marc and Wohlrabe, Klaus}, title = {Maschinelles Lernen in der {\"o}konomischen Forschung}, volume = {71}, journal = {Ifo Schnelldienst}, number = {07}, publisher = {Ifo Institut}, address = {M{\"u}nchen}, issn = {2199-4455}, url = {https://www.ifo.de/publikationen/2018/aufsatz-zeitschrift/maschinelles-lernen-der-oekonomischen-forschung}, pages = {50 -- 53}, year = {2018}, language = {de} } @article{KuhnHuberDorfneretal.2015, author = {Kuhn, Philipp and Huber, Matthias and Dorfner, Johannes and Hamacher, Thomas}, title = {Challenges and opportunities of power systems from smart homes to super-grids}, volume = {45}, journal = {Ambio}, number = {Suppl 1}, publisher = {Springer}, address = {Dordrecht}, issn = {1654-7209}, doi = {https://doi.org/10.1007/s13280-015-0733-x}, pages = {50 -- 62}, year = {2015}, abstract = {The world's power systems are facing a structural change including liberalization of markets and integration of renewable energy sources. This paper describes the challenges that lie ahead in this process and points out avenues for overcoming different problems at different scopes, ranging from individual homes to international super-grids. We apply energy system models at those different scopes and find a trade-off between technical and social complexity. Small-scale systems would require technological breakthroughs, especially for storage, but individual agents can and do already start to build and operate such systems. In contrast, large-scale systems could potentially be more efficient from a techno-economic point of view. However, new political frameworks are required that enable long-term cooperation among sovereign entities through mutual trust. Which scope first achieves its breakthrough is not clear yet.}, language = {en} } @phdthesis{Huber2017, author = {Huber, Matthias}, title = {Flexibility in Power Systems - Requirements, Modeling, and Evaluation}, publisher = {Technische Universit{\"a}t M{\"u}nchen}, address = {M{\"u}nchen}, pages = {213}, school = {Technische Universit{\"a}t M{\"u}nchen}, year = {2017}, language = {en} } @article{HuberDimkovaHamacher2014, author = {Huber, Matthias and Dimkova, Desislava and Hamacher, Thomas}, title = {Integration of wind and solar power in Europe: Assessment of flexibility requirements}, volume = {2014}, journal = {Energy}, number = {69}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0360-5442}, doi = {https://doi.org/10.1016/j.energy.2014.02.109}, pages = {236 -- 246}, year = {2014}, abstract = {Flexibility is the ability of a power system to respond to changes in power demand and generation. Integrating large shares of variable renewable energy sources, in particular wind and solar, can lead to a strong increase of flexibility requirements for the complementary system, traditionally hydrothermal, which has to balance the fluctuations of variable generation. We quantify these flexibility requirements at the operational timescale of 1-12 hours and different spatial scales across Europe. Our results indicate that three major factors determine the ramping flexibility needed in future power systems: the penetration of variable renewables, their mix and the geographic system size. Compared to the variability of load, flexibility requirements increase strongly in systems with combined wind and PV (photovoltaics) contribution of more than 30\% of total energy and a share of PV in the renewables mix above 20-30\%. In terms of extreme ramps, the flexibility requirements of a geographically large, transnational power system are significantly lower than of smaller regional systems, especially at high wind penetration.}, language = {en} } @article{HuberWeissbart2015, author = {Huber, Matthias and Weissbart, Christoph}, title = {On the optimal mix of wind and solar generation in the future Chinese power system}, volume = {2015}, journal = {Energy}, number = {90}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1873-6785}, doi = {https://doi.org/10.1016/j.energy.2015.05.146}, pages = {235 -- 243}, year = {2015}, language = {en} } @article{HuberRogerHamacher2015, author = {Huber, Matthias and Roger, Albert and Hamacher, Thomas}, title = {Optimizing long-term investments for a sustainable development of the ASEAN power system}, volume = {2015}, journal = {Energy}, number = {88}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0360-5442}, doi = {https://doi.org/10.1016/j.energy.2015.04.065}, pages = {180 -- 193}, year = {2015}, language = {en} }