The world is facing an energy crisis brought about by the ever increasing consumption of fossil fuels that leads to pollution and health problems. The renewable clean energies must be used if we are to witness economic development and reduce fossil fuel consumption. To this end, educational systems play an important role as they are the initial stage wherein the concept of clean/renewable energies can be dealt with. Solar, wind, geothermal, and biogas energies that are clean, renewable, and abundant, need to be covered in our textbooks in order to prepare the grounds for the expansion of their use.  Whether that is the case in Iranian elementary school textbooks or not, 2836 pages of all such textbooks were content analyzed. The findings show that solar energy coverage has the highest frequency and significance, while tidal, geothermal, and waves energies are the least frequently covered topic in these books.