Two drive units, each used to actuate eight linked collectors with a total length of 100 m, were designed for the Spanish Research Centre for Energy, Environment and Technology (CIEMAT) as slightly modified successors of the EuroTrough II parabolic trough collector. The collectors are used to preheat water for an existing experimental parabolic trough. In contrast to previous parabolic troughs, the INDITEP is designed to be erected on sloped ground surfaces. This building site has a slope of 1.5°.