Energy production through the indiscriminate use of non-renewable natural resources such as coal, oil and natural gas leads to a situation of depletion of these resources with inevitable consequences for the environment. There are many forms of pollution and environmental problems that humans have been causing since the beginning of the industrial revolution, and in particular since the second half of the last century. Borderless pollution associated with all human activities and which, together with other serious problems, is degrading all ecosystems and contributing to climate change, the consequences of which we are already experiencing. The costs of this environmental degradation have only recently been taken into account, but it is first understood that they should be incorporated into the assessment of any project. The urgent transition from non-renewable and polluting energy resources to clean and sustainable energy is now technically possible. A transition capable of meeting the energy needs of humanity as a whole and which is a key component in preventing ecological and social disasters and enabling a sustainable future. The implementation of renewable energy in areas where there is little or no energy provision, based on the acquisition of technical skills for its application, provides tools to generate a change in habits. Aware of this reality, in particular, the aim of our project is to build a solar water collector with PET bottles that generates hot water. We believe that this system can contribute to the necessary change in the consumption model, as well as being a good example of engagement with society.