%0 Journal Article %A Evangelos Vrettos %A Emre C Kara %A Jason S MacDonald %A Goran Andersson %A Duncan S Callaway %B IEEE Transactions on Smart Grid %D 2016 %G eng %N 4 %P 3213 - 3223 %R 10.1109/TSG.2016.2628897 %T Experimental Demonstration of Frequency Regulation by Commercial Buildings—Part I: Modeling and Hierarchical Control Design %V 9 %8 11/2016 %! IEEE Trans. Smart Grid