Ausgewählte Publikationen

2022

• Weidlich A
  Auf dem Weg zur Klimaneutralität - Ein Blick auf die Energieforschung in Deutschland
  2022 Forschung und Lehre, Band: 11, Seiten: 858 - 859
• Hottenroth H, Sutardhio C, Weidlich A, Tietze I, Simon S, Hauser W, Naegler T, Becker L, Buchgeister J, Junne T, Lehr U, Scheel O, Schmidt-Scheele R, Ulrich P, Viere T
  Beyond Climate Change. Multi-attribute decision making for sustainability assessment of energy system transformation pathways
  2022 Renewable and Sustainable Energy Reviews, Band: 156, Seite: 111996
  
   
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• Ulrich P, Naegler T, Becker L, Lehr U, Simon, S, Sutardhio C, Weidlich A
  Comparison of macroeconomic developments in ten scenarios of energy system transformation in Germany: National and regional results
  2022 Energy, Sustainability and Society, Band: 12, Nummer: 35, Seiten: 1 - 19
  
   
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• Schmidt‑Scheele R, Hauser W, Scheel O, Minn F, Becker L, Buchgeister J, Hottenroth H, Junne T, Lehr U, Naegler T, Simon S, Sutardhio C, Tietze I, Ulrich P, Viere V, Weidlich A
  Sustainability assessments of energy scenarios: citizens’ preferences for and assessments of sustainability indicators
  2022 Energy, Sustainability and Society, Band: 12, Nummer: 41, Seiten: 1 - 23

2021

• Naegler T, Sutardhio C, Weidlich A, Pregger T
  Exploring long-term strategies for the German Energy Transition - A Review of Multi-Sector Energy Scenarios
  2021 Renewable and Sustainable Energy Transition, Band: 1, Seite: 100010
• Unnewehr JF, Jalbout E, Jung C, Schindler D, Weidlich A
  Getting more with less? Why repowering onshore wind farms does not always lead to more wind power generation – A German case study
  2021 Renewable Energy, Band: 180, Seiten: 245 - 257
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  Kurzfassung

  The best wind locations are nowadays often occupied by old, less efficient and relatively small wind turbines. Many of them will soon reach the end of their operating lifetime, or lose financial support. Therefore, repowering comes to the fore. However, social acceptance and land use restrictions have been under constant change since the initial expansions, which makes less area available for new turbines, even on existing sites. For the example of Germany, this study assesses the repowering potential for onshore wind energy in high detail, on the basis of regionally differentiated land eligibility criteria. The results show that under the given regional criteria, repowering will decrease both operating capacity and annual energy yield by roughly 40% compared to the status quo. This is because around half of the wind turbines are currently located in restricted areas, given newly enacted exclusion criteria. Sensitivity analyses on the exclusion criteria show that the minimum distance to discontinuous urban fabric is the most sensitive criterion in determining the number of turbines that can be repowered. As regulations on this can vary substantially across different regions, the location-specific methodology chosen here can assess the repowering potential more realistically than existing approaches.
  
  
   
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• Naegler T, Becker L, Buchgeister J, Hauser W, Hottenroth H, Junne T, Lehr U, Scheel O, Schmidt-Scheele R, Simon S, Sutardhio C, Tietze T, Ulrich P, Viere T, Weidlich A
  Integrated Multidimensional Sustainability Assessment of Energy System Transformation Pathways
  2021 Sustainability, Band: 13, Nummer: 9, Seiten: 5217-1 - 5217-29
  
   
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• Sauer DU, Pittel K, Henning H-M, Renn J, Schmidt C, Spiecker I, Bett A, Haucap J, Kühling J, Matthies E, Umbach E, Ragwitz M, Staiß F, Weidlich A, Erlach B, Glotzbach U, Lapac A, Seiler A, Stephanos C
  Wenn nicht jetzt, wann dann – wie die Energiewende gelingt
  acatech Schriftenreihe zur wissenschaftsbasierten Politikberatung, 2021

2020

• Heimsath A, Sutardhio C, Schöttl P, Nitz P
  Soiling of Solar Mirrors - Impact of Incidence Angles on CSP Plant Performance
  2020 25th Solar Power And Chemical Energy Systems International Symposium SolarPACES 2019 25th Solar Power And Chemical Energy Systems International Symposium SolarPACES, Band: 1

2019

• Brown T, Schäfer M, Greiner M
  Sectoral Interactions as Carbon Dioxide Emissions Approach Zero in a Highly-Renewable European Energy System
  2019 Energies, Band: 12, Seite: 1032
  » Kurzfassung anzeigen« Kurzfassung verbergen
  Kurzfassung

  Measures to reduce carbon dioxide emissions are often considered separately, in terms of electricity, heating, transport, and industry. This can lead to the measures being prioritised in the wrong sectors, and neglects interactions between the sectors. In addition, studies often focus on specific greenhouse gas reduction targets, despite the uncertainty regarding what targets are desirable and when. In this paper, these issues are examined for the period after 2030 in an existing openly-available, hourly-resolved, per-country, and highly-renewable model of the European energy system, PyPSA-Eur-Sec-30, that includes electricity, land transport, and space and water heating. A parameter sweep of different reduction targets for direct carbon dioxide emissions is performed, ranging from no target down to zero direct emissions. The composition of system investments, the interactions between the energy sectors, shadow prices, and the market values of the system components are analysed as the carbon dioxide limit changes. Electricity and land transport are defossilised first, while the reduction of emissions in space and water heating is delayed by the expense of new components and the difficulty of supplying heat during cold spells with low wind and solar power generation. For deep carbon dioxide reduction, power-to-gas changes the system dynamics by reducing curtailment and increasing the market values of wind and solar power. Using this model setup, cost projections for 2030, and optimal cross-border transmission, the costs of a zero-direct-emission system in these sectors are marginally cheaper than today’s system, even before the health and environmental benefits are taken into account.
  
  
   
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2018

• Schlachtberger D, Brown T, Schäfer M, Schramm S, Greiner M
  Cost optimal scenarios of a future highly renewable European electricity system: Exploring the influence of weather data, cost parameters and policy constraints
  2018 Energy, Band: 163, Seiten: 100 - 114
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  Kurzfassung

  Cost optimal scenarios derived from models of a highly renewable electricity system depend on the specific input data, cost assumptions and system constraints. Here this influence is studied using a techno-economic optimisation model for a networked system of 30 European countries, taking into account the capacity investment and operation of wind, solar, hydroelectricity, natural gas power gen- eration, transmission, and different storage options. A considerable robustness of total system costs to the input weather data and to moderate changes in the cost assumptions is observed. Flat directions in the optimisation landscape around cost-optimal configurations often allow system planners to choose between different technology options without a significant increase in total costs, for instance by replacing onshore with offshore wind power capacity in case of public acceptance issues. Exploring a range of carbon dioxide emission limits shows that for scenarios with moderate transmission expansion, a reduction of around 57% compared to 1990 levels is already cost optimal. For stricter carbon dioxide limits, power generated from gas turbines is at first replaced by generation from increasing renewable capacities. Non-hydro storage capacities are only built for low-emission scenarios, in order to provide the necessary flexibility to meet peaks in the residual load.
  
  
   
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• Tranberg B, Schäfer M, Brown T, Hörsch J, Greiner M
  Flow-based analysis of storage usage in a low-carbon European electricity scenario
  2018 15th International Conference on the European Energy Market (EEM), 2018
  
   
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2015

• Weidlich A
  Nachhaltige Energiewirtschaft
  Studienbrief im Kontaktstudium Energiewirtschaft, Zentrum für Mediales Lernen, Karlsruher Institut für Technologie, 2015
• Weidlich A, Denne, B
  Projekt "Nachhaltige Hochschule"
  Campus Magazin der Hochschule Offenburg, Band: 39, Seiten: 12 - 13, 2015

2006

• Cames M, Weidlich A
  Emissions trading and innovation in the German electricity industry -- Impact of possible design options for an emissions trading scheme on innovation strategies in the German electricity industry
  2006 Springer Science and Business Media, Seiten: 39 - 51

2003

• Weidlich A, Manolakaki E, Ciampa F
  Courses and Trainings in Europe – In the field of sustainable energy
  Comité de Liaison Energies Renouvelables, Montreuil, 2003