To achieve the near-zero carbon emissions from chemical looping hydrogen generation (CLHG) power plant, two novel systems were proposed in this study: one integrates CLHG with ammonia decomposition for hydrogen production (ADHP) and CO2 hydrogenation to methanol (CHM), while the other integrates CLHG with CHM and CO2 compression storage (CCS). The performance of these two integrated systems was evaluated through analyses of economy, energy, exergy, and ecology (4E). The findings reveal that the CLHG-CHM-CCS system is more economically competitive and environmentally favorable than the CLHG-ADHP-CHM system. Its maximum net present value increases by 2.373×108 $, and annual CO2 emissions decreases by 361.401 t. Meanwhile, the system's profitable allowable maximum purchasing price of natural gas increases by 0.036 $/Nm3, while its minimum selling price of methanol decreases by 47.583 $/t. However, the CLHG-ADHP-CHM system exhibits improvements in both energy efficiency and exergy efficiency, with improvements of 1.88% and 2.34%, respectively, compared to the CLHG-CHM-CCS system. Moreover, reactors within the CLHG subsystem account for 42.60% of its total exergy loss, offering a potential 3.275 MW improvement.