The general objective of this project is to increase the energy efficiency used in the public building – Matei Corvin Technical College, Hunedoara Municipality, Hunedoara County, thus ensuring a substantial improvement of the working conditions within the public building while reducing the level of greenhouse gas emissions equivalent to the carbon footprint. By the general object it proposes and the expected results, it is considered that the present project is appropriate and necessary; the general and specific objectives are within the objectives of the intervention priority because they lead to increased energy efficiency in public buildings contributing both to the realisation of the energy efficiency object established by Romania for 2020 and to the reduction of the carbon footprint and thus to the promotion of sustainable and sustainable development. The general objective proposed by this project directly contributes to achieving the objectives of Horizon 2020 regarding sustainable development and thus energy efficiency.