EU PVSEC Programme Online
EU PVSEC 2021, 6 - 10 September 2021
Presentation: 6CO.13.2 Development of Various Photovoltaic Driven Water Electrolysis Technologies for Green Solar Hydrogen Generation within the PECSYS Project
Type: Oral
Date: Wednesday, 8th September 2021
08:30 - 10:00
Author(s): S. Calnan, R. Bagacki, F. Bao, I. Dorbandt, E. Kemppainen, C. Schary, R. Schlatmann, M. Leonardi, S.A. Lombardo, R.G. Milazzo, S.M.S. Privitera, C. Connelli, D. Consoli, C. Gerardi, P. Zani, M. Carmo, S. Haas, M. Lee, M. Müller, W. Zwaygardt, J. Oscarsson, L. Stolt, M. Edoff, T. Edvinsson, I.B. Pehlivan
Presenter / Speaker: S. Calnan, HZB, Berlin, Germany
Event: Conference Conference
Session: 6CO.13 Solar Hydrogen
Topic: 6. 5 Energy System Integration
Summary / Abstract: Direct solar hydrogen generation via a combination of photovoltaics and water electrolysis can potentially ensure a sustainable energy supply while minimising green-house emissions. The PECSYS project aimed at demonstrating solar driven electrochemical hydrogen generation system with an area >10 m² with high efficiency and at reasonable cost. Thermally integrated photovoltaic electrolysers using thin film silicon, CuInGaSe and silicon heterojunction photovoltaics combined with alkaline electrolysis to form one unit, were developed on a prototype level with solar collection areas in the range from 64 - 2600 cm² with the solar to hydrogen (StH) efficiency ranging from ~4%- 13%. We also investigated electrical direct coupling of photovoltaic modules to a proton exchange membrane electrolyser to test the effects of bifaciality (730 cm² solar collection area) and to study the long-term operation under outdoor conditions (10 m² collection area). In both cases, StH efficiencies exceeding 10% could be maintained over the test periods used. All the StH efficiencies reported were based on measured gas outflow using mass flow meters.