This study addresses the potential in the implementation of a solar thermal program to heat water in Ecuador against the use of LPG systems. It defines the national market and some number from the international market, including the technical description of LPG systems and solar thermal systems. In terms, of their environmental, social, economical, and other sustainable aspects to take in consideration for their implementation. By representing a complete analysis that also includes a strategic approach for the correct implementation of the projects, taking all the consideration giving by international models and the suggestions from experts in the field.