Tender for Engineering service for the preparation of an independent construction project for each of the following remote AT stations: - Massuets reservoir – Dosrius (O8-01) - Direct castellbisbal 1 dam (G6-32) - Daltmar reservoir (C0-03) - Calaf reservoir (A9-05) - El Pinós reservoir (A9-03) These actions consist of designing and evaluating the construction of a new electrical substation by the company, according to the corresponding study provided by the company edistribució. In addition, a complete solution will be presented, fully integrated into the existing installations. In case there are no third-party impacts, such as land, environmental or public entity impacts, the format of the construction project can be reduced to a set of technical prescriptions once agreed with the responsible party of the ATL contract.