The IET Premium Awards 2018: This is to certify that Yongheng Yang, Frede Blaabjerg, Huai Wang and Marcelo Godoy Simoes are awarded the IET Renewable Power Generation Premium Award for the paper "Power control flexibilities for grid-connected multi-functional photovoltaic inverters", Volume 10, lssue 4, 2016, p. 504-513. This prize is awarded by Nigel Fine & Nick Winser