X0101 EFFECT 33 LIVE 2017-05-25 16:00:00

S-4

0001637757 NRG YIELD LLC 333-217815 0001637758 NRG YIELD OPERATING LLC 333-217815-10 0001637756 UB FUEL CELL, LLC 333-217815-09 0001637721 NYLD FUEL CELL HOLDINGS LLC 333-217815-08 0001637708 NRG YIELD RPV HOLDING LLC 333-217815-07 0001637753 NRG SOUTH TRENT HOLDINGS LLC 333-217815-06 0001640983 NRG YIELD DGPV HOLDING LLC 333-217815-05 0001637742 NRG ENERGY CENTER OMAHA HOLDINGS LLC 333-217815-04 0001637723 NRG ENERGY CENTER OMAHA LLC 333-217815-03 0001637719 ALTA WIND COMPANY, LLC 333-217815-02 0001637717 ALTA WIND 1-5 HOLDING COMPANY, LLC 333-217815-01