An OWL ontology for a Solar Power Tower Plant (SPTP). A SPTP uses mirrors to concentrate, bundle and amplify the incident sunlight in order to generate electricity. It consists of a tower with a receiver at the top and is surrounded by a high amount of mirrors, which reflect the sunlight to the receiver. The arising heat drives a conventional steam power plant with electricity as its output. Using the sun as the greatest energy source available at earth, SPTPs are one of the cleanest options for generating electricity nearly pollution-free.