yes you are financing it...which means it will take 50 years b4 u complete it...since when has a poor country with a GDP of 47B financed a 12B dollar project? hehe...you might get the money but it will take ages...as a result, it makes more sense to take a loan, finish the railway quickly then the project will pay back the creditors....win win situation...but i congratulate u for going electric...hiyo ni poa sana...hata wa Nigeria wameanza kutetemeka jinsi EA inavokimbia...walisikia trains za Addis, wakaskia tena BRT ya Dar, na wataskia tena electric SGR ya TZ...wakati wao hawana chochote cha maana...yaani nigeria is very corrupt...i heard their SGR took almost 20B but if u see the stations? lol!