Dr. Markus Klenk

Projekte

• Verbesserung der Zuverlässigkeit und Leistungsfähigkeit von Photovoltaik-(PV)-Systemen – IEA PVPS Task 13 Swiss Consortium (2026-2029) / Stellv. Projektleiter:in / laufend
• Leistung von PV-Systemen bei Teilverschattung: Von der Zelle zum System / Stellv. Projektleiter:in / laufend
• Wirtschaftlichkeit von Photovoltaik auf Gründächern / Teammitglied / laufend
• PVEco – Wirtschaftlichkeit von Photovoltaiksystemen unter Berücksichtigung von dynamischen Stromtarifen / Teammitglied / laufend
• Weiterentwicklung eines Zauns mit integriertem Photovoltaiksystem / Stellv. Projektleiter:in / laufend
• Weiterentwicklung Photovoltaik Baukasten / Stellv. Projektleiter:in / laufend
• Alpine PV Kompetenz / Stellv. Projektleiter:in / abgeschlossen
• WebPVShade / Stellv. Projektleiter:in / abgeschlossen
• Performance, Operation & Reliability of Photovoltaic-Systems / Teammitglied / abgeschlossen
• PV-EYE – Photovoltaiksysteme auf Flachdächern mit höchsten Energieerträgen pro Fläche / Stellv. Projektleiter:in / abgeschlossen
• Entwicklung und vergleichender Test eines Gesamtpakets für bifaziale Photovoltaik-Systeme auf Gründächern / Co-Projektleiter:in / abgeschlossen
• Adapted Modules for Bifacial Photovoltaics / Co-Projektleiter:in / abgeschlossen
• Ultra lightweight PV modules / Teammitglied / abgeschlossen

Publikationen

Beiträge in wissenschaftlicher Zeitschrift, peer-reviewed

• Nussbaumer, H., Janssen, G., Berrian, D., Wittmer, B., Klenk, M., Baumann, T., Baumgartner, F., Morf, M., Burgers, A., Libal, J., & Mermoud, A. (2020). Accuracy of simulated data for bifacial systems with varying tilt angles and share of diffuse radiation. Solar Energy, 197, 6–21. https://doi.org/10.1016/j.solener.2019.12.071
• Chudinzow, D., Klenk, M., & Eltrop, L. (2020). Impact of field design and location on the techno-economic performance of fixed-tilt and single-axis tracked bifacial photovoltaic power plants. Solar Energy, 207, 564–578. https://doi.org/10.1016/j.solener.2020.06.096
• Nussbaumer, H., Klenk, M., Morf, M., & Nicolas, K. (2019). Energy yield prediction of a bifacial PV system with a miniaturized test array. Solar Energy, 179, 316–325. https://doi.org/10.1016/j.solener.2018.12.042
• Berrian, D., Libal, J., Klenk, M., Nussbaumer, H., & Kopecek, R. (2019). Performance of bifacial PV arrays with fixed tilt and horizontal single-axis tracking : comparison of simulated and measured data. IEEE Journal of Photovoltaics, 9(6), 1583–1589. https://doi.org/10.1109/JPHOTOV.2019.2924394
• Baumann, T., Nussbaumer, H., Klenk, M., Dreisiebner, A., Carigiet, F., & Baumgartner, F. (2019). Photovoltaic systems with vertically mounted bifacial PV modules in combination with green roofs. Solar Energy, 190, 139–146. https://doi.org/10.1016/j.solener.2019.08.014

Schriftliche Konferenzbeiträge, peer-reviewed

• Nussbaumer, H., Tulinski, L., Bühlmann, G.-L., Eidtmann, M., Vögeli, P., & Klenk, M. (2025, September 22). Measures to adapt the power output on demand by system design on rooftop PV systems. 42nd European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC), Bilbao, Spain, 22-26 September 2025.
• Nussbaumer, H., Hiltebrand, R., Pfyffer, S., Dreisiebner, A., & Klenk, M. (2024). Increasing the proportion of winter electricity through design optimisation of photovoltaic roof systems [Conference paper]. Proceedings of the 41st European Photovoltaic Solar Energy Conference and Exhibition, 020458–020001. https://doi.org/10.4229/EUPVSEC2024/4DV.4.5
• Klenk, M., Glarner, R., Pfyffer, S. L., Nussbaumer, H., Brenneisen, S., & Dreisiebner, A. (2024). PV on green roofs : two years of comparative measurement data from various system concepts, supplemented by simulation results and general considerations [Conference paper]. Proceedings of the 41st European Photovoltaic Solar Energy Conference and Exhibition, 020371–020001. https://doi.org/10.4229/EUPVSEC2024/4BV.4.14
• Nussbaumer, H., Hiltebrand, R., Pfyffer, S., Tulinski, L., Preisig, J., & Klenk, M. (2024). Highest energy yields per area for PV systems on flat roofs [Conference paper]. Proceedings of the 41st European Photovoltaic Solar Energy Conference and Exhibition, 020460–020001. https://doi.org/10.4229/EUPVSEC2024/4DV.4.10
• Baumgartner, F. P., Klenk, M., Widler, A., & Baumann, L. (2024). MPP tracking losses of module level power electronics at partial module shading [Conference paper]. Proceedings of the 41st European Photovoltaic Solar Energy Conference and Exhibition, 020289–020001. https://doi.org/10.4229/EUPVSEC2024/3EO.1.5
• Nussbaumer, H., Hiltebrand, R., Pfyffer, S., & Klenk, M. (2023). Photovoltaic and green roof : energy yield per area of vertically installed bifacial modules in dense arrangements [Conference paper]. Proceedings of the 40th European Photovoltaic Solar Energy Conference and Exhibition, 020424–020001. https://doi.org/10.4229/EUPVSEC2023/4DO.12.5
• Lang, M., Oreski, G., Fuchs, P., Helfer, E., Halm, A., & Klenk, M. (2021). FEM simulation of deformations in strings of shingled solar cells under mechanical and thermal loading. Proceedings of the 38th EUPVSEC. https://userarea.eupvsec.org/proceedings/EU-PVSEC-2021/4AV.2.27/
• Nussbaumer, H., Klenk, M., Morf, M., Meister, J., & Werner, D. (2020). Miniaturized model kit for yield measurements of PV systems : concept and application [Conference paper]. Proceedings of the 2020 47th IEEE Photovoltaic Specialists Conference (PVSC), 1093–1095. https://doi.org/10.1109/PVSC45281.2020.9300554

Weitere Publikationen

• Nussbaumer, H., Klenk, M., Libal, J., & Kopecek, R. (2019). PV systems with lowest LCOE using bifacial modules : state-of-the-art systems and components. PV-Tech Power, 18, 16–27.
• Baumann, T., Carigiet, F., Knecht, R., Klenk, M., Dreisiebner, A., Nussbaumer, H., & Baumgartner, F. (2018). Performance analysis of vertically mounted bifacial PV modules on green roof system. 35th European Photovoltaic Solar Energy Conference and Exhibition. https://doi.org/10.21256/zhaw-4034
• Klenk, M., Nussbaumer, H., Veschetti, Y., Kopecek, R., Kreiter, R., & Hildebrandt, H. (2018). Bifacial PV systems and yield data (bifacial gain). In R. Kopecek & J. Libal (Eds.), Bifacial photovoltaics : technology, applications and economics (pp. 153–214). Institution of Engineering and Technology.
• Janssen, G. J. M., Burgers, A. R., Binani, A., Carr, A. J., Van Aken, B. B., Romijn, I. G., Klenk, M., Nussbaumer, H., & Baumann, T. (2018). How to maximize the kwh/kwp ratio : simulations of single-axis tracking in bifacial systems. 35th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC), Brussels, Belgium, 24-27 September 2018.
• Nussbaumer, H., Klenk, M., Halm, A., & Schneider, A. (2018). State-of-the-art bifacial module technology. Photovoltaics International, 2018(41), 108–125.
• Nussbaumer, H., Klenk, M., Keller, N., Ammann, P., & Thurnheer, J. (2017). Record-light weight c-Si modules based on the small unit compound approach : mechanical load tests and general results [Conference paper]. Proceedings of the 33rd European Photovoltaic Solar Energy Conference and Exhibition, 146–150. https://doi.org/10.4229/EUPVSEC20172017-1CV.3.69
• Nussbaumer, H., Klenk, M., Keller, N., Heller, D., Käslin, R., Baumann, T., & Baumgartner, F. (2017). Application of shaped reflectors to increase the energy harvest of bifacial PV systems : analyzed with a miniaturized test array [Conference paper]. 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC 2017) : Proceedings, 1077–1080.
• Baumann, T., Klenk, M., Keller, N., Nussbaumer, H., & Baumgartner, D. (2017). Illumination homogeneity of bifacial systems : outdoor measurements with systematically varied installation conditions : visual [Conference paper]. Proceedings of the EU PVSEC 2017, 1605–1609. https://doi.org/10.4229/EUPVSEC20172017-5BV.4.28
• Nussbaumer, H., Petrzilek, G., Schartinger, S., Klenk, M., Keller, N., Baumann, T., Carigiet, F., & Baumgartner, F. (2016). Miniaturized test array as a means to determine the energy harvest of bifacial installations [Conference paper]. Poceedings of the 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC), 2698–2703. https://doi.org/10.1109/PVSC.2016.7750140
• Nussbaumer, H., Petrzilek, G., Schartinger, S., Klenk, M., Keller, N., Baumann, T., Carigiet, F., & Baumgartner, F. (2016). Influence of low concentration on the energy harvest of PV systems using bifacial modules. Proceedings of the EU PVSEC 2016 (Munich).
• Nussbaumer, H., Petrzilek, G., Schartinger, S., Klenk, M., Keller, N., Baumann, T., Carigiet, F., & Baumgartner, F. (2016). Miniaturized test array as a means to determine the energy harvest of bifacial installations [Conference poster]. IEEE PVSC 2016 : Kongress, 2698–2703. https://doi.org/10.1109/PVSC.2016.7750140
• Nussbaumer, H., Klenk, M., & Keller, N. (2016). Small unit compound modules : a new approach for light weight PV modules [Conference paper]. Proceedings of the 32nd European Photovoltaic Solar Energy Conference and Exhibition, 56–60. https://doi.org/10.4229/EUPVSEC20162016-1BO.12.5
• Nussbaumer, H., Klenk, M., Schär, D., Baumann, T., Carigiet, F., Keller, N., & Baumgartner, F. (2015). PV installations based on vertically mounted bifacial modules evaluation of energy yield and shading effects [Conference paper]. Proceedings of the 31st European Photovoltaic Solar Energy Conference and Exhibition, 2037–2041. https://doi.org/10.4229/EUPVSEC20152015-5AV.6.34

Mündliche Konferenzbeiträge und Abstracts

• Klenk, M. (2023, March 21). Energiegründach mit vertikal installierter PV in der Praxis. 21. Schweizer Photovoltaik-Tagung, Bern, Schweiz, 20.-21. März 2023. https://www.swissolar.ch/fileadmin/user_upload/Tagungen/PV-Tagung_2023/Praesentationen_Tag2/PVT23_4.3_Markus_Klenk.pdf
• Nussbaumer, H., Klenk, M., Morf, M., Fil, G., & Carigiet, F. (2021, November 15). Comparative energy yield study of vertically installed bifacial PV modules measured by a miniturized test rig. 38th European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC), Online, 6-10 September 2021.
• Klenk, M., Nussbaumer, H., Morf, M., Baumann, T., Baumgartner, F., Berrian, D., Libal, J., Janssen, G., & Burgers, T. (2018). Bifacial modeling with the BIFOROT. Fifth bifiPV Workshop, Denver, USA, 10-11 September 2018.
• Klenk, M., Baumann, T., Nussbaumer, H., Morf, M., Keller, N., & Baumgartner, F. (2017, October 26). BIFOROT – Experimental data for LCOE appraisal of bifacial systems. 4th bifiPV Workshop 2017, Konstanz, Deutschland, 25-26 October 2017.
• Klenk, M., Nussbaumer, H., Baumgartner, F., Keller, N., & Baumann, T. (2016). Bifacial outdoor roto tester : BIFOROT. 3rd Bifi PV 2016 Workshop on Bifacial PV, Miyazaki, Japan, 29-30 September 2016.

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