The first official definition of Smart Grid was provided by the Energy Independence and Security Act of 2007 (EISA-2007), which was approved by the US Congress in January 2007, and signed to law by President George W. Bush in December 2007.
Prvu zvaničnu definiciju Smart Grid-a obezbedio je Zakon o energetskoj nezavisnosti i bezbednosti iz 2007. godine (Zakon o energetskoj nezavisnosti i bezbednosti iz 2007. godine) (EISA-2007)], koji je odobrio Kongres SAD u januaru 2007. godine i potpisan zakon od strane Predsednik George V. Bush u decembru 2007. godine.