▁Total ▁solar ▁install ations ▁have ▁been ▁decl ining ▁since ▁the ▁T es la ▁ac quisition . ▁T es la ' s ▁energy ▁reven ues ▁increased ▁from ▁$ 1 . 1 2 ▁billion ▁in ▁ 2 0 1 7 ▁to ▁$ 1 . 5 5 ▁billion ▁in ▁ 2 0 1 8 , ▁but ▁decl ined ▁slightly ▁in ▁ 2 0 1 9 ▁to ▁$ 1 . 5 3 ▁billion . ▁Anal yst s ▁believe ▁that ▁Sol ar City ▁has ▁been ▁" a ▁big ▁source ▁of ▁the ▁c ash - flow ▁def ic it " ▁for ▁T es la . ▁ ▁Loc ations ▁Head quarters ▁are ▁in ▁San ▁Mate o , ▁California , ▁while ▁the ▁company ▁uses ▁a ▁distributed ▁service ▁model ▁in ▁which ▁it ▁provides ▁installation ▁from ▁local ▁operations ▁cent ers . ▁ ▁As ▁of ▁May ▁ 2 0 1 6 , ▁Sol ar City ▁oper ates ▁in ▁ 2 0 ▁juris dict ions : ▁ 1 8 ▁states ▁on ▁the ▁West ▁Coast , ▁in ▁the ▁South west , ▁and ▁in ▁the ▁N ortheast , ▁as ▁well ▁as ▁Hawai i , ▁and ▁the ▁District ▁of ▁Columbia . ▁ ▁Product s , ▁services , ▁and ▁techn ologies ▁ ▁Sol ar ▁le asing ▁In ▁ 2 0 0 8 , ▁Sol ar City ▁entered ▁the ▁solar ▁le asing ▁market ▁with ▁a ▁new ▁solar ▁le ase ▁option ▁for ▁home own ers : ▁le asing ▁ro o ft op ▁solar ▁to ▁customers ▁who ▁would ▁pay ▁no ▁up front ▁costs . ▁In ▁exchange , ▁customers ▁paid ▁for ▁ 2