The solar resource map has been obtained from Solargis [1]. Information about suitable locations for compressed air underground storage has been obtained from Refs. [2-9].
[1] Solargis-s.r.o., Global Solar Atlas 2.0, 2022: https://globalsolaratlas.info
[2] Blanco, H. and A. Faaij, A review at the role of storage in energy systems with a focus on Power to Gas and long-term storage. Renewable and Sustainable Energy Reviews, 2018. 81: p. 1049-1086.
[3] Ozarslan, A., Large-scale hydrogen energy storage in salt caverns. International Journal of Hydrogen Energy, 2012. 37(19): p. 14265-14277.
[4] Thomas, R.J., et al., Salt domes of the UAE and Oman: Probing eastern Arabia. Precambrian Research, 2015. 256: p. 1-16.
[5] Ennis-King, J., et al., Underground storage of hydrogen: mapping out the options for Australia, in Future Fuels CRC2021, Australian Government.
[6] Caglayan, D.G., et al., Technical potential of salt caverns for hydrogen storage in Europe. International Journal of Hydrogen Energy, 2020. 45(11): p. 6793-6805.
[7] Luke, R., Compressed Air Storage for Electricity Generation in South Africa, 1996, University of Cape Town: Cape Town.
[8] Chen, J., et al., Preliminary investigation on the feasibility of a clean CAES system coupled with wind and solar energy in China. Energy, 2017. 127: p. 462-478.
[9] King, M., et al., Overview of current compressed air energy storage projects and analysis of the potential underground storage capacity in India and the UK. Renewable and Sustainable Energy Reviews, 2021. 139: p. 110705.