Wollny, M.: Advanced Hybridization for Diesel Power Grids to minimize Fuel Consumption, ISES Solar World Congress 2013, Cancun, Mexico
Wollny, M.: The Off-Grid Market- a Land of Opportunities, 6th PV Hybrid and Mini Grid Conference and Exhibition, OTTI e.V., Chambery, France 2012
Wollny, M.; Thim, F.: Operation of Large Scale Autonomous Hybrid Power Supply System with Renewables, CIGRE 2012, Paris, France
Wollny, M.: Sustainable Stand-alone Power Supply based on Renewable Energy Solutions, 19th PPA Conference (Pacific Power Association) Port Morsby, Papua New Guinea, 2010
Wollny, M.; Tapanlis, S. : Hybrid Backup Power Solution for Weak and Unstable Grids, ISES Solar World Congress – October 11th-14th, 2009, Johannesburg, South Africa
Wollny, M.; Tapanlis, S.: Hybrid Backup Power Solution for Unstable Grids, ISES – AP 2008, 3rd International Solar Energy Society Conference, Asia Pacific Region, 46th ANZSES Annual Conference November 25th-28th, 2008 Sydney, Australia.
- International Energy Agency: IEA PVPS Task 9, Subtask 4, Report IEA-PVPS T9-13: 2013, Rural Electrification with PV Hybrid Systems, overview and recommendations for further deployment
- CLUB-ER, Thematic Paper, July 2013, ISBN: 978-3-906042-11-4 , Author: Grégoire; Contribution from: Erik Lysen, Anjali Shanker (IED), Caroline Nielsen (SERC), Michael Wollny (SMA), Georg Bopp (Fraunhofer ISE) and Brisa Ortiz (Fraunhofer ISE)