Complex sentence: China's installed hydro capacity in 2015 was 319 GW, up from 172 GW in 2009, including 23 GW of pumped storage hydroelectricity capacity.
Split into simpler sentences: China's installed hydro capacity in 2015 was 319 GW up from 172 GW in 2009. This includes 23 GW of pumped storage hydroelectricity capacity.