Development of technologies is a complex process with many obstacles and interrelations. Model for the energy technologies development, at a country scale, has been constructed to consider deployment of clean fossil fuels technologies in Poland. The model minimizes costs of electricity and heat production by selecting technologies which fulfill emissions standards. Detailed structure of coal supply has been considered as coal constitutes most important primary energy carrier for Poland. Different policy option influencing fuel and energy system have been considered as a scenarios: obligatory use of some technologies, emissions limits and investment subsidies. The models results proved that clean fossil fuels based technologies will be still playing major role in Polish energy system, they are competitive and of relatively low emissions.