In this paper we will talk about the production of concrete in construction engineering, adding grace from power plants. From burning coal in power plants in Kosovo is being produced a large amount of ashes, which results as technological waste. From the economic view, environmental and science, this study is undertaken in accordance with the requirements of European standard ENV 206-1 and EN450-1, EN450-2.The main goal of this study is to use the power plant ashes as raw material for the production of concrete and to determine the optimal mixing ratios. Today there is a extensive experience in the use of thermal power plants ashes for concrete production, but to those that produced in Kosovo, this is the first study undertaken in this field.With the use of thermal power plants ashes in concrete planned generation facility, we will try to study some very important technical features that apply to the design of reinforced concrete structures, also to study the possibility of reducing the consumption of cement for benefiting the same concrete and with the better quality. In this case the expected results will be: the reduction of the cost of concrete, maintenance of equipment for the production and placing the right concrete in contraction
