Fossil fuel fired power generation : case studies of recently constructed coal and gas fired power plants ; in support of the G 8 plan of action To meet future energy demand growth and replace older or inefficient units a large number of fossil fuel fired plants will need to bebuilt worldwide in the next decade. Yet CO2 emissions from fossil fired power generation are a major contributor to climate change. As a result new plants must be designed and operated at highest efficiency. The case studies in this report respond to a request to the IEA from the G8 Summit in July 2005&nbsp; to illustrate the degree of efficiency now achieved in modern plants in different parts of the world using various grades of fossil fuels. The plants were