Thermal power plants are necessary to guarantee the continuous supply of electrical power. They can also provide their residual heat to local heat clients (Combined Heat and Power, CHP). Through their conversion to renewable fuels (biomass, hydrogen and e-fuels) or the addition of Carbon Capture systems (for Carbon Capture Use and Storage, CCUS), they can play their roles in a green and sustainable way. At BRITE, we work on the conversion of thermal power plants into green units through advanced process and complex flow simulations and onsite measurement campaigns.