Technically fascinating area of technology. Main advantages seem to be much lower environmental footprint, beneficial ash, less water consumption, was considered to be easier to separate CO2 compared to atmospheric processes under the assumption of using amine process but latest EU research into nano particles-based membranes suggest an efficient process to premove CO2 may be at hand for atmospheric processes. Also can be configured to produce chemicals and liquid fuels .
Problems are much higher first cost, much lower equivalent availability when configured as a standalone / dedicated ASU-gasifier-CTG-HRSG-STG==> a failure in any one of these 5 items will take the entire plant down- the product of the availability of each of 5 items yields the plant overall availability. A better business model ( a la Lucadia)is to locate the gasifer local to both a nat gas pipeline and a CO2 pipeline for EOR , configure the gasifier to produce SNG synthetic nat gas , and use this SNG as a hedge against the price of nat gas consumed at the distant power plant 2000 miles away. This uncouples the reliability of the 5 components and leverages the value of existing interstate pipelines.