Exhibit 21.1

List of Subsidiaries of Abengoa Yield plc

Effective as of the date of the Asset Transfer

Subsidiary |  | Jurisdiction of Incorporation or Organization
Abengoa Cogeneración Tabasco, S. de R.L. de C.V. |  | Mexico
Abengoa Concessions Infraestructures, S.L. |  | Spain
Abengoa Concessions Perú, S.A. |  | Peru
Abengoa Solar US Holdings Inc. |  | Delaware
Abengoa Solar Holdings USA Inc. |  | Delaware
Abengoa Transmisión Norte, S.A. |  | Peru
Abengoa Transmisión Sur, S.A. |  | Peru
ACT Holding S.A. de C.V. |  | Mexico
ASO Holdings Company LLC |  | Delaware
Arizona Solar One LLC |  | Delaware
Mojave Solar Holdings LLC |  | Delaware
Mojave Solar LLC |  | Delaware
Palmatir, S.A. |  | Uruguay
Palmucho, S.A. |  | Chile
Solaben Electricidad Dos, S.A. |  | Spain
Solaben Electricidad Tres, S.A. |  | Spain
Transmisora Mejillones, S.A. |  | Chile
Transmisora Baquedano, S.A. |  | Chile