Noun
Hi-NRG (uncountable)
(music) A style of uptempo disco or electronic dance music that originated in the United States and United Kingdom in the late 1970s.
hi-NRG (uncountable)
Alternative letter-case form of Hi-NRG
Bronski also remixed the track "Flowers in the Morning" by Northern Irish electronic band, Electrobronze in 2007, changing the style of the song from classical to Hi-NRG disco. Source: Internet