Over the last few years, within the framework of the MET4LOWCAR project (PID2019-107455RB-C21/AEI/ 92 10.13039/501100011033 and PID2019-107455RB-C22/AEI/10.13039/501100011033) and funded by the Ministry of Innovation and Science of Spain, we have developed a set of retrospective databases of solar PV plants, wind farms and renewable resources in Spain. The databases are publicly available and aim to facilitate studies that contribute to the development of an electrical and energy system in Spain, based on renewable energies.