Persuasive technologies can be useful to modify behaviors related to energy usage. In this paper, we present the PowerHouse a computer game designed to influence behaviors associated with energy use and promote an energy-aware lifestyle among teenagers. This prototype game aims to influence a set of target activities in the home using several persuasive techniques. Employing the format of a reality TV show (docu soap), the game informs implicitly and explicitly about various energy-efficient actions. We discuss our overall game design and its advantages and disadvantages in relation to the methods we have employed in the game.