“…The fuel cost obtained by the proposed method is 1,051,964.4$/day. In Table 16, the simulation result of proposed HPSTCO is compared with other recently published hybrid methods, namely BBOSB [29], FA-PSOTVAC [27], BBPSO [26], HIGA [25], LDISS [24], HHS [15] and hybrid EP-SQP [17], which are 3,054,190.6032$/day, 3,105,700$/day, 3,062,144$/day, 3,055,435.068$/day, 3,051,259.9486$/day, 3,057,313.39$/day and 3,159,204$/day, respectively. In comparison, the cost yielded by HPSTCO is 3,051,105.813 $/day only.…”