Abstract: To enhance the overall performance of the waste-to-energy (WTE) process, an advanced WTE hybrid system consisting of with plasma gasifier, solid oxide fuel cells (SOFC), gas turbine (GT) and waste heat recovery subsystem was proposed for power and heat cogeneration (CHP). Two schemes of the new design, named conventional plan and zero-carbon emission plan, were proposed based on the requirement of carbon emission. A carbon capture and storage subsystem was equipped to the conventional scheme, and the waste heat utilization subsystem in the zero-carbon emission plan has been changed accordingly. A tech-economic evaluation was conducted to examine the benefits based on a 300kg/h plasma gasifier. The results show that the net electricity efficiency and CHP efficiency of the conventional scheme are 52.06% and 84.34%. In the zero-carbon emission plan, the net electricity efficiency and CHP efficiency are only reduced by 3.22% and 0.89% for carbon capture. The main source of irreversibility can be traced to two components, plasma gasifier and heat exchanger units, nearly accounting for half of the total exergy destruction. Only 4.62 years is required to recover the initial investment of the conventional scheme and a net present value of 57.38 million yuan can be attained by the WTE project during its lifespan. After carbon capture, the dynamic payback period is extended to 5.46 years with a NPV of 48.32 million yuan.