▁compet itive ▁wh oles ale ▁and ▁ret ail ▁energy ▁service ▁under ▁the ▁R eli ant ▁Energy ▁brand . ▁Its ▁business es ▁included ▁power ▁generation ▁and ▁ret ail ▁energy ▁services ▁in ▁Texas ▁newly ▁der eg ulated ▁electric ity ▁market . ▁On ▁the ▁wh oles ale ▁side , ▁R eli ant ▁owned , ▁had ▁an ▁interest ▁in , ▁or ▁le ased ▁ 3 7 ▁operating ▁power ▁generation ▁facilities ▁serving ▁five ▁regions ▁of ▁the ▁United ▁States . ▁ ▁In ▁January ▁ 2 0 0 7 , ▁the ▁Texas ▁electric ity ▁market ▁became ▁fully ▁der eg ulated , ▁and ▁R eli ant ▁began ▁to ▁offer ▁an ▁array ▁of ▁products , ▁flexible ▁service ▁options , ▁and ▁pr icing ▁arrang ements ▁to ▁a ▁variety ▁of ▁customers . ▁At ▁this ▁time , ▁R eli ant ▁was ▁the ▁second ▁largest ▁mass ▁market ▁electric ity ▁provider ▁in ▁the ▁state ▁of ▁Texas , ▁with ▁an ▁annual ▁re venue ▁of ▁$ 1 0 . 9 ▁billion ▁and ▁more ▁than ▁ 3 , 5 0 0 ▁employees . ▁In ▁February ▁ 2 0 0 7 , ▁R eli ant ▁Energy ▁announced ▁plans ▁for ▁Mark ▁Jacob s , ▁current ▁chief ▁financial ▁operator , ▁to ▁succeed ▁Jo el ▁Staff ▁as ▁chief ▁executive ▁officer ▁and ▁for ▁Brian ▁Land rum ▁to ▁become ▁chief ▁operating ▁officer . ▁ ▁On ▁May ▁ 1 , ▁ 2 0 0 9 , ▁R eli ant ▁Energy ' s ▁ret ail ▁electric ity ▁business ▁was ▁purchased ▁by ▁NR G ▁Energy . ▁The ▁ret ail ▁group ▁retained ▁the ▁name ▁R eli ant ▁Energy ▁and ▁the