2023: Camilla Chlebna, Jannika Mattes: ‘Regional transition fields: How processes of adaptation and delimitation shape regional transitions’. 14. International Sustainability Transitions (IST) Conference. Universität Utrecht. Utrecht, Niederlande. 01.09.2023.

2023: Sabrina Paustian, Julia Köhlke, Jannika Mattes und Sebastian Lehnhoff 'Ready, Set, Rollout…? Zur Bedeutung von heterogenen Akteuren bei der Verzögerung des Smart Meter Rollouts in Deutschland' Aktuelle Perspektiven der Wissenschafts- und Technikforschung Frühjahrstagung der Sektion Wissenschafts- und Technikforschung der Deutschen Gesellschaft für Soziologie, TU Dortmund , 04.-05.05.2023.

2022: Sabrina Paustian, Jannika Mattes 'Digitalisation, standardisation and their organisational impact: The example of a collaborative innovation project in the energy sector' Organisationssoziologisches Kolloquium, TU Berlin, 17.11.2022.

2022: Jannika Mattes Soziale 'Soziale Dynamiken des (regionalen) Energiewandels' Vortragsreihe TU for Future an der Technischen Universität Braunschweig, 16.11.2022.

2022: Meike Löhr, Camilla Chlebna, Jannika Mattes: ‘How do actors shape transition processes? Transition Work – an actor-centred perspective.‘ Innovation lunch. Centre for Technology, Innovation and Culture (TIK), University of Oslo. Oslo, Norway. 20.10.2022

2022: Sebastian Rohe, Ricarda Schmidt-Scheele, Jannika Mattes: ‘The embeddedness of companies in regional energy transitions’ 6th Geography of Innovation Conference (GeoInno2022). Milan, Italy. 04.-06.07.2022

2022: Sabrina Paustian, Julia Köhlke, Jannika Mattes, Sebastian Lehnhoff 'The (still unexplored) Social Side of Smart Grid Development. Towards a Social Layer for the Smart Grid Architecture Model (SGAM)'. ACM e-Energy 2022 Workshop on Bridging International Societal Differences in Autonomous and Digitalized Energy Systems. Virtual event/ Hybrid hub Oldenburg. 28.06.2022.

2022: Jannika Mattes: Keynote 1: 'Innovation in organizations and in societies'. Workshop on Bridging International Societal Differences in Autonomous and Digitalized Energy Systems (Hybrid Hub at ACM e-Energy 2022) June 28th, 2022.

2022: Sabrina Paustian, Ricarda Schmidt-Scheele, Jannika Mattes 'Heterogeneous cooperation in smart grid projects: Bridging institutional logics via digital standards?' Tagung des DGS-Arbeitskreises „Soziologie der Nachhaltigkeit“: Kann eine digitale Gesellschaft nachhaltig sein? Soziologische Perspektiven auf die Wechselwirkungen von gesellschaftlicher Transformation, Technik und Natur. Universität Passau. 23.-24.06.2022.

2022: Camilla Chlebna, Hanna Martin, Jannika Mattes: ‘Grasping transformative regional development’. Presentation as part of the Special Session ‘From New Industrial Path Development to Regional Development Outcomes’ at the Global Conference of Economic Geography (GCEG) in Dublin, Ireland. 8/6/2022.

2021: Julia Köhlke, Sabrina Paustian, Jannika Mattes, Sebastian Lehnhoff, Mathias Uslar 'Perspectives on the Social Embeddedness of the Smart Grid Architecture Model in Innovation Projects’. CIRED 2021/online. 20.-23.09.2021.

2021: Jannika Mattes: 'A geography of innovation perspective on regions in sustainability transitions‘. Contribution to the Panel “Spatiality in sustainability science: Contrasting perspectives to accelerate transformation” at the virtual German Sustainability Science Summit 2021, 8.-9.7.2021.

2021: Sabrina Paustian, Jannika Mattes: 'Standardisierung durch Digitalisierung im Energiesektor – Der Umgang mit Standardisierung in kollaborativen Innovationsprozessen' - Lecture at the virtual Annual Meeting 2021 of the section Organisationssoziologie (Deutsche Gesellschaft für Soziologie) "Große  Herausforderungen“ und Organisationen: Themenfelder, Theorien und  Methoden im Umbruch. 10.-11.06.2021.

2021: Meike Löhr, Camilla Chlebna, Jannika Mattes: 'From institutional work to transition work: Actors creating, maintaining and disrupting transition processes.' 5th Energy & Society Conference, Trento /online. 10.02.2021.

2021: Meike Löhr, Camilla Chlebna, Jannika Mattes: 'Die Gestaltung von Transitionsprozessen durch Netzwerkbildung und Disruption: Transition Work im Windsektor.' NEW 4.0 Wissenschaftskongress Hamburg / online. 28.01.2021.

2020: Sebastian Rohe, Jannika Mattes: ‘What about the regional level? Regional configurations within Technological Innovation Systems’. Presentation at the (online) workshop ‘Accelerating Green Innovations’, hostet by the University of Bremen. 01-02/10/2020.

2020: Meike Löhr, Camilla Chlebna, Jannika Mattes: ‘Transition work: Analysing transition processes as interplay of actors, institutions and technologies – evidence from the German wind sector.’ 11^th International Sustainability Transitions (IST) Conference, Vienna, Austria / online. 21/08/2020.

2020: Camilla Chlebna, Hanna Martin, Jannika Mattes: ‘Grasping regional development: Towards a concept of transformative change’. Presentation as part of the Special Session on ‘The heterogeneity of regional energy transitions’ at the 5^th Geography of Innovation Conference, Stavanger, Norwegen. 31/1/2020.

2020: Jannika Mattes, Camilla Chlebna, Meike Löhr, Sebastian Rohe: ‘Regional Transition Fields:
Energy Transitions as Processes of Institutionalization.’ Presentation as part of the Special Session on ‘The heterogeneity of regional energy transitions’ at the 5^th Geography of Innovation Conference, Stavanger, Norwegen. 31/1/2020.

2019: Camilla Chlebna, Hanna Martin, Jannika Mattes: ‘Grasping regional development: Towards a concept of transformative change’. Presentation as part of the special session ‘Conceptualising regional development in the ongoing energy transition’ organized with Laura Norris (Cardiff University, GB) at the winter conference of the Regional Studies Association (RSA), London, United Kingdom. 15/11/2019.

2019: Camilla Chlebna, Hanna Martin, Jannika Mattes: ‘Grasping regional development: Towards a concept of transformative change.’ Virtual conference presentation at the Student and Early Careers Conference of the Regional Studies Association (RSA), Lincoln, United Kingdom. 1/11/2019.

2019: Meike Löhr, Jannika Mattes: ‘Facing transition phase two: Analysing actor strategies in a stagnating acceleration phase.’ International Sustainability Transitions (IST) Conference, Ottawa, Canada. 24/6/2019.

2019: Camilla Chlebna, Jannika Mattes: ‘When the novelty fades - Socio-technical, spatial and temporal dynamics of regional energy transitions.’ Presentation as part of the special session ‘The social and spatial dynamics of Regional Energy Transitions’ organised by REENEA at the Annual Event of the Regional Studies Association (RSA), Santiago de Compostela, Spain. 4/6/2019.

2019: Meike Löhr, Jannika Mattes: ‘Facing transition phase two: Analysing actor strategies in a stagnating acceleration phase.’ Presentation as part of the special session ‘The social and spatial dynamics of Regional Energy Transitions’ organised by REENEA at the Annual Event of the Regional Studies Association (RSA), Santiago de Compostela, Spain. 4/6/2019.

2018: Camilla Chlebna, Jannika Mattes: ‘When the novelty fades – The role of fragile stabilisation for regional energy transitions.’ Presentation at the Winter Conference of the Regional Studies Association (RSA), London, United Kingdom. 15/11/2018.

2018: Camilla Chlebna, Jannika Mattes: ‘When the novelty fades – What role does the routinisation of networks and practices play for regional energy transitions?’. Presentation and session chair at the Student and Early Careers Conference of the Regional Studies Association (RSA), Brighton, United Kingdom. 26/10/2018.

2018: Jannika Mattes, Camilla Chlebna, Meike Löhr, Sebastian Rohe: 'Regionale Transitionsfelder:
Energiewandel als sozialer Prozess.' Presentation in the session 'Innovationsfelder. Handlungsfelder der Koordination komplexer Innovationen' at the 39th congress of the German Society of Sociology (DGS), Göttingen, Germany, 24.-28.09.2018.

2018: Jannika Mattes: 'Theorizing energy transition as a social process'. Presentation at the International Sustainability Transitions Conference, Manchester, Great Britain, 12.-14.06.2018.

2018: Jannika Mattes, Camilla Chlebna, Meike Löhr, Sebastian Rohe: 'Agency in regional energy transition: Towards a more detailed understanding of institutional change'. Presentation at the Regional Studies Conference, Lugano, Switzerland, 03.-06.06.2018.

2018: Jannika Mattes: 'Internationalisierung der Arbeit - Innovationsprozesse in multinationalen Konzernen'. Vortrag im Rahmen der Veranstaltungsreihe der Kooperationsstelle Hochschule-Gewerkschaften aus Anlass des Wissenschaftsjahrs 2018 'Arbeitswelten der Zukunft' Zukunft der Arbeit, 15.05.2018 

2018: Jannika Mattes, Camilla Chlebna, Meike Löhr, Sebastian Rohe: 'The Social Processes of Negotiating, Norming and Learning in Regional Energy Transitions'. Workshop of the German Research Foundation’s Emmy Noether Programme Project REENEA, 'Energy Systems in Transition – The Role of Actors in Regional Change Processes' 3.-4.5.2018

2018: Jannika Mattes: 'Regionaler Energiewandel unter der Lupe - Die Rolle der Akteure'  Lecture at the 'Uni am Markt', Center for Lifelong Learning (C3L), 28.04.2018

2017: Jannika Mattes: 'Regional energy fields: Understanding energy transition as social process'. Presentation as a part of the European Association for Evolutionary Political Economy (EAEPE) Workshop, Bremen, 30.11.2017.

2016: Martin Heidenreich, Jannika Mattes: 'Die soziale Konstruktion einer Branche in kollaborativen Innovationsprozessen'. Presentation in the series of lectures 'Aktuelle Themen zur Windenergieforschung' Windenergieforschungszentrums ForWind, Oldenburg, 26.04.2016.

2016: Martin Heidenreich, Jannika Mattes: 'Die soziale Konstruktion der Windenergiebranche in verteilten Innovationsprozessen'. Presentation at the Conference „Kollaborative Innovationen“ (Final Conference Collaborative innovations: The use of external knowledge in inter-firm development processes), Göttingen, 25.-26.02.2016.

2016: Teis Hansen, Jannika Mattes: 'Beyond reciprocal proximity effects: the role of power'. Presentation at the 3rd Geography of Innovation Conference, Toulouse, Frankreich, 28.-30.01.2016.

2015: Jannika Mattes: 'Energietransition unter der Lupe'. Presentation as part of the series 'Innovation und sozialer Wandel', Organisations- und Innovationssoziologie, University of Stuttgart, 10.12.2015.

2015: Jannika Mattes Martin Heidenreich: 'Die doppelte Koordinierung verteilter Innovationen in und zwischen Organisationen. Eine Mikrofundierung governancetheoretischer Perspektiven'. Presentation as part of the autumn conference, DGS-section Organisationssoziologie, Berlin, 26.-27.11.2015.

2015: Jannika Mattes: 'Breaking down energy transition. The interplay of actors and subsystems in regional restructuration processes'. Presentation as part of the research colloquium STəPS,  University of Twente, Netherlands, 30.09.2015.

2015: Jannika Mattes: 'Regionale Lernsysteme und die Transformation regionaler Energiesysteme'. Presentation as part of the spring conference, DGS-section Wissenschafts- und Technikforschung, Dortmund, 12.-13.06.2015.

2015: Teis Hansen, Jannika Mattes: 'Beyond reciprocal proximity effects: the role of power'. Presentation as part of the Regional Studies Association Annual Conference, Piacenza, Italy, 24.-27.05.2015.

2015: Jannika Mattes: 'Transition regionaler Energiesysteme'. Presentation as part of the  sociological colloquium, Technische Universität Dortmund, 22.01.2015.

2014: Jannika Mattes, Markus Allbauer: 'Energy transitions in regional learning systems'. Presentation in the CIRCLE research seminar at the University of Lund, Sweden, August 20th, 2014.

2013: Jannika Mattes, Jens Köhrsen, Andreas Huber: 'Energy transition at the regional scale: An empirical investigation of development dynamics'. Full paper and presentation at the International Conference on Sustainability Transitions, Zurich, Switzerland, June 19th-21th, 2013.

2013: Andreas Huber, Jens Köhrsen, Jannika Mattes: 'Towards a better understanding of local reorganization processes - empirical findings from two case studies'. Full paper and presentation at the eceee Summer Study in Belambra Les Criques, France, June 3rd-8th, 2013.

2012: Jannika Mattes, Martin Heidenreich: 'Die soziale Einbettung multinationaler Unternehmen'. Presentation at the DGS conference, plenary session on 'Vielfalt und Zusammenhalt durch Innovation', Bochum, Germany, October 2nd, 2012. 

2012: Jannika Mattes: 'Regionale Innovationssysteme im Erneuerbare-Energien-Sektor'. Invited presentation at the MINO symposium on 'Innovation und Nachhaltigkeit', Nuremberg, Germany, September 28th, 2012.

2012: Jannika Mattes, Andreas Huber: 'Regional innovation systems in the energy transition: Towards a framework of indicators for analysing local reorganisation processes'. Presentation at the International Conference on Sustainability Transitions, Kopenhagen, Denmark, August 29th-31st, 2012. 

2012: Jannika Mattes: 'Regional development as a process of mutual adaptation between global value chains and regional institutional orders'. Presentation at the Regional Studies Association European Conference, Delft, The Netherlands, May 13th-16th, 2012.

2012: Jannika Mattes: 'Organising innovation in multinational companies: Selective,sequential and temporary strategies'. Paper and presentation in the CIRCLE research seminar at the University of Lund, Sweden, March 22nd, 2012.

2011: Jannika Mattes: 'Kooperationen zwischen Hochschulen und Unternehmen: Regionale Spillover-Effekte?' Invited presentation at the Workshop 'Zukunft des Technologietransfers', University of Speyer, Germany, September 21st-23rd, 2011.

2011: Jannika Mattes: 'Processes of innovation between stablity and renewal: A knowledge-based view on a classical dilemma'. Paper and presentation at the EGOS colloquium: Restabilising organisations, Gothenburg, Sweden, July 6th-9th, 2011.

2011: Jannika Mattes: 'Processes of innovation between formalisation and flexibilsation: A classical dilemma revisited'. Paper and presentation at the EGOS pre-conference Post-Doc Workshop, Gothenburg, Sweden, July 3rd-4th, 2011.

2011: Jannika Mattes, Sinje Späth: 'MNC subsidiaries in emerging markets between exploitation and augmenting. The challenge of balancing hierarchy and heterarchy'. Paper and presentation at the SASE Annual Meeting: Transformations of Contemporary Capitalism: Actors, Institutions, Processes, Madrid, Spain, June 23rd-25th, 2011. 

2010: Jannika Mattes: 'Regional embeddedness of multinational companies. A critical perspective'. Paper for the Workshop 'Nation und Region - neuere Entwicklungen und deren Rahmenbedingungen', University of Bamberg, Germany, October 7th-8th, 2010.

2010: Jannika Mattes, Martin Heidenreich: 'Beyond embeddedness'. Presentation at the conference 'Institutional embeddedness of multinational companies', University of Oldenburg, Germany, February 26th-27th, 2010. 

2009: Jannika Mattes: 'Innovation dilemmas in multinational: organisational, international and regional dilemmas'. Presentation in the CIND series at the University of Uppsala, Sweden, October 2nd, 2009.

2009: Jannika Mattes, Martin Heidenreich: 'The regional embeddedness of French and German MNEs: a source of competitive advantage?' Presentation in the ESRC-seminar series on Regional Diversity and Local Economic Development at the Warwick Business School, Warwick, Great Britain, June 5th, 2009.

2008: Jannika Mattes: 'Innovation dilemmas in multinational companies and regions'. Presentation in the Departmental Research Seminar in the Department of Geography and Environment at the London School of Economics and Politics, London, Great Britain, November 24th, 2008.

2008: Jannika Mattes: 'Innovation zwischen interner und externer Heterogenität von Wissen: Produktentwicklung in der deutschen und französischen Automobilindustrie'. Presentation in the Workshop Produktentwicklung in der Automobilindustrie (Product development in the automobile industry), University of Oldenburg, Germany, November 7th-8th, 2008.

2008: Jannika Mattes: 'Innovation dilemmas in multinational companies: an arena-specific analysis or organisational, international and regional aspects'. Paper presented at the International PhD Course in Economic Geography, Utrecht, The Netherlands, November 4th, 2008.

2008: Jannika Mattes, Elisabeth Baier: 'Drivers of innovation between globalisation and localisation'. Paper presented at the Regional Studies Association International Conference, Prague, Czech Republic, May 27th-29th, 2008. 

2007: Jannika Mattes: 'Research projects of multinational companies and their regional embeddedness'. Paper presented at the PhD Pre-Colloquium Workshop of the EGOS Colloquium 'Beyond Waltz - Dances of Individuals and Organization', Vienna, Austria, July 2nd-4th, 2007.

2006: Jannika Mattes: 'Innovation in multinational companies'. Paper presented at the 18th annual meeting on Socio-Economics, SASE: Constituting Globalization: Actors, Arenas and Outcomes. Trier, Germany, June 30th - July 2nd, 2006.