Steorn Ltd /ˈstjɔːrn/ is a small, private technology development company based in Dublin, Ireland. It announced in August 2006 it had developed a technology which provides "free, clean, and constant energy", apparently in violation of the law of conservation of energy, a fundamental principle of physics. Steorn challenged the scientific community to investigate their claim and, in December 2006, said that it had chosen a jury of scientists to do so. In June 2009 the jury gave its unanimous verdict that Steorn had not demonstrated the production of energy.