1. World Energy Outlook 2016, International Energy Agency, 2016.
2. Channell, J., Jansen, H.R., Syme, A.R., Savvantidou, S., Morse, E.L., and Yuen, A. (2013). Energy Darwinism: The Evolution of the Energy Industry. Citi GPS: Global Perspectives Solutions.
3. Evaluating the limits of solar photovoltaics (PV) in traditional electric power systems;Denholm;Energy Policy,2007
4. The energetic implications of curtailing versus storing solar- and wind-generated electricity;Barnhart;Energy Environ. Sci.,2013
5. Bertuccioli, L., Chan, A., Hart, D., Lehner, F., Madden, B., and Standen, E. (2017). Development of Water Electrolysis in the European Union. Fuel Cells and Hydrogen Joint Undertaking (FCH JU).