Van Lanen, D. , Cocking, J. , Walker, S. B. , Fowler, M. , Fraser, R. , Young, S. B. , Ahmadi, L. , et al. (2015). Economic and environmental analysis of a green energy hub with energy storage under fixed and variable pricing structures. International Journal of Process Systems Engineering, 3, 158–180. Inderscience Publishers (IEL).