The Swedish energy market is currently undergoing a transition from fossil fuels to renewable energy sources, including a potential phase-out of nuclear power. The combination of a phase-out with expansion of intermittent renewable energy leads to the issue of increased fluctuations in electricity production. Energy-related organizations and institutions are projecting future Swedish energy scenarios with different possible transition pathways. In this study the market role of thermal power plants is assessed in two future scenarios. The fast start-up time of gas turbines means that they can balance out fluctuations. Given that a large share of reports already studies costs of the system, this report instead investigates the profitability, potential market roles, and competitive features of these technologies in the future market.