José Alano, a 64-year-old Brazilian retiree, has been leading a project since 2002. It is a water heating system that works with solar energy and uses PET plastic bottles and de-dried milk boxes (Tetra Pak) and tubes of PVC to build a radiator. The panel, positioned at a 45-degree incline, catches the sun's rays to convert cold water into hot water for a hot shower without using electricity.
Alano had thought for years what to do with all the waste PET plastics. And so the creation of this low-cost hot spring earned him a patent. In several interviews, José has stated that his intention is not to commercialize these hot springs, but rather that each family can also get the materials and build it.
So after sophisticating the first prototypes and achieving the ideal design, he drew up a “do it yourself” manual. These instructions are changing the way of consuming energy and saving resources in thousands of families in Brazil.