 [6] In October 2016, Denniss co-founded Wave Swell Energy with a technology expected to make wave energy commercially viable for the first time.Denniss was born in 1961 in Wollongong, 80 km south of Sydney, Australia.He attended Warilla North Primary School from 1966 to 1973,[9] and Lake Illawarra High School from 1974 to 1979, and was Student Council President at high school in 1979.