For the wires connecting the seaside desalination plant and the city, we assumed a typical example of one tension tower, five suspension towers, wires, insulators, and ground and shield wires for a 2 km line, which are capable of 420 kV power transmission. The LCCO2 emission per wire length, 𝐶 , was 5.9 × 10 5 kg-CO2/2km. The service life of the wire was assumed to be 70 years. The LCCO2 emissions per day from the construction are calculated by dividing by the number of days. Thus, the LCCO2 from building the wires, 𝐵 (kg-CO2/day), were estimated by the following equation: