#  For a Ca-looping cycle installed on a 500 MW power plant, the purge rate is 12.6 kg CaO/s.
#  For the cement production process, 0.65 kg CaO is required/ kg cement produced.
#  U.S. electric generation capacity (only fossil fuels): Natural gas = 415 GW, Coal= 318 GW & Petroleum = 51 GW 
#  Cement consumption in U.S. = 110,470 × 10 metric tons = 1.10470 × 10 metric tons = 1.10470 × 10 kg.