Exhaust Gas Recycle (EGR) is one of the technologies used to increase the CO₂ concentration in the gas turbine flue gas. This paper presents the results of an experimental campaign carried out at the Pilot-scale Advanced Capture Technology (PACT) facilities at the UK Carbon Capture and Storage Research Centre (UKCCSRC). A 100 kW_e Turbec T100 PH microturbine was integrated with a post combustion CO₂ capture plant that has a CO₂ capture capacity of one ton per day. The impact of different CO₂ concentrations (representing a range of EGR ratios) on the post-combustion CO₂ capture process was experimentally evaluated using 30% (wt.%) Monoethanolamine (MEA) solvent. It was observed that the specific reboiler duty was reduced by around 7.1% per unit percentage increase in CO₂ concentration. Overall, it was seen that the higher the CO₂ concentration, the lower the specific reboiler duty at a fixed capture rate. Both rich and lean solvent loadings increased with increase in flue gas CO₂ concentration. Energy balance on the stripper has shown that steam generation rate and condenser duty increases with increase in CO₂ concentration. The experimental data was used to develop and validate the model for the Pilot-scale amine capture plant using Aspen HYSYS.