A thermodynamic and economic analysis of a GT10 gas turbine integrated with the air bottoming cycle is presented. The results are compared to commercially available combined cycle power plants based on the same gas turbine. The systems under analysis have a better chance of competing with steam bottoming cycle configurations in a small range of the power output capacity. The aim of the calculations is to determine the final cost of electricity generated by the gas turbine air bottoming cycle based on a 25 MW GT10 gas turbine with the exhaust gas mass flow rate of about 80 kg/s. The article shows the results of thermodynamic optimization of the selection of the technological structure of gas turbine air bottoming cycle and of a comparative economic analysis. Quantities are determined that have a decisive impact on the considered units profitability and competitiveness compared to the popular technology based on the steam bottoming cycle. The ultimate quantity that can be compared in the calculations is the cost of 1 MWh of electricity. It should be noted that the systems analyzed herein are power plants where electricity is the only generated product. The performed calculations do not take account of any other (potential) revenues from the sale of energy origin certificates. Keywords: Gas turbine air bottoming cycle, Air bottoming cycle, Gas turbine, GT10
 Chmielniak T., Czaja D., Lepszy S.: A thermodynamic and economic comparative analysis of combined gas-steam and gas turbine air bottoming cycle. In: Proc. 25th Int. Conf. Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2012, Jun 26-29, 2012, Perugia.
 Intecteam, JV-Team for Planning, Construciton, Service, Trading in the Energy Business. Budget offer Combined Cycle Power Plant. Würzburg; website: www.intecteam.eu.
 Czaja D., Chmielniak T., Lepszy S.: Selection of gas turbine air bottoming cycle for Polish compressor stations. J. Power Technol. 93(2013), 2, 67-77.
 Information brochure. ABB Zamech Gazpetro Sp. z o.o.
 Gas Turbine World Handbook, 2009.
 Vatavuk W.M.: Marshall and Swift Equipment Cost Index. Chem. Eng. 118(2011), 10, 80-8.
 Own information obtained from industry, 2012.
 Bolland O., Fřrde M., Hande B.: Air Bottoming Cycle. Use of Gas Turbine Waste Heat for Power Generation. ASME Paper 95-CTP-50, 1995.
 Kotowicz J.: Gas-Steam Power Stations. Kaprint, Lublin 2008 (in Polish).
 Chmielniak T., Lepszy S., Czaja D.: Internal report. Subject II.7.3.1 Thermodynamic analysis of different technological concepts of air bottoming cycle; Subject II.7.3.2 Selection of available technological solutions of gas turbines, taking into account technical and economic criteria; II.7.3.1b. Part 2. Selection of optimal solutions in terms of thermodynamic criteria; II.7.3.1a. Part 3. II.7.3.2a. Economic analysis, part 3. Gliwice 2011/2012 (in Polish).
 Chmielniak T., Lepszy S., Czaja D.: Internal report. Subject II.7.3.1 Thermodynamic analysis of different technological concepts of air bottoming cycle; Subject II.7.3.2 Selection of available technological solutions of gas turbines, taking into account technical and economic criteria; II.7.3.2a. Economic analysis, part 3. Economic analysis results; II.7.3.3a. Development of methodology of calculation air heat exchanger and its preliminary design study. Gliwice 2012/2013 (in Polish).
 Chmielniak T., Lepszy S., Czaja D.: Internal report. Subject II.7.3.3 Preliminary design study of air heat Exchange, turbomachinery and heat exchangers in air bottoming cycle.II.7.3.3a. Development of methodology of calculation air heat exchanger and its preliminary design study. II. 7.3.3b. Development of methodology of calculation turbomachinery in air bottoming cycle. Gliwice 2013/2014 (in Polish).