Local energy generation and conversion in freezing rain and snowstorms over southern China between 26 and 28 January 2008 were investigated using the NCEP-DOE Reanalysis 2 data. In the subtropical jet, the mean kinetic energy (K_m) converts energy into interaction kinetic energy (K_i) flow, and then transient-eddy kinetic energy (K_e) is gained from the K_i flow. The K_i flow has the same orientation as the subtropical jet. The term for baroclinic conversion between K_e and A_e (ω_eα_e) and the geopotential height advection terms were about one order of magnitude lower than the terms for the conversions between K_m and K_i (C(K_m, K_i)) and between K_i and K_e (C(K_i, K_e)). The transient-eddy available potential energy (A_e) mainly obtained energy indirectly from the mean available potential energy (A_m) over central-southern China because of the interaction available potential energy (A_i) flow. At 1200 UTC on 26 January 2008, there were two sources of A_i flow, one over the Tibetan Plateau and the other over northeastern China. The two sources shifted eastward over time so the energy conversions also shifted eastward. The A_i flows had two orientations, one being the orientation opposite that of the subtropical jet and the other in the same direction as the subtropical jet.