Integrated and combined cycles (ICC, CC) traditionally involve gas and steam turbines only. The paper analyses the further integration of high-temperature fuel cells (FC) having high electrical efficiency reaching up to 60% compared with 30-35% for most gas turbines. The previous research on FC hybrids indicates achieving high efficiencies and economic viability is possible. The CC of various FC types-their performance and the potential for utilisation of renewables-are analysed considering also power generation capacity and site heat integration context. Further research and development with industrial relevance are outlined focusing on CO2 emissions reduction. (C) 2008 Elsevier Ltd. All rights reserved.