The purpose of this article is to present a compost heap as the method of using an energy produced in the composting process on an agri-tourism farm. In the first part of the paper the characteristics of renewable energy sources in selected countries of the European Union have been presented. For this purpose, data has been used which is provided in the document titled „Energy from renewable sources in 2012” made available by the Central Statistical Office. In the further part of this article, the use of a compost pile on agri-tourism farm for water heating has been presented. The heat is produced in a compost heap and "waste” created in this process is a valuable natural fertilizer, which is useful in the agricultural works and ecological garden.