Exhibit 8.1
Subsidiaries of Atlantica Sustainable Infrastructure plc

| Subsidiary | Jurisdiction of Incorporation or Organization
| A&F PV Solar SAPI de C.V. | Mexico
| ACT Energy México, S. de R.L. de C.V. | Mexico
| ACT Holdings, S.A. de C.V. | Mexico
| Agrisun, Srl. | Italy
| Aguas de Skikda, S.P.A. | Algeria
| Alcala Sviluppo Solare, Srl. | Italy
| Arizona Solar One, LLC. | United States
| ASHUSA, Inc. | United States
| ASI Operations, LLC | United States
| ASO Holdings Company, LLC. | United States
| ASUSHI, Inc. | United States
| Atlantica Canada Inc. | Canada
| Atlantica Chile, SpA | Chile
| Atlantica Colombia S.A.S. E.S.P. | Colombia
| Atlantica Corporate Resources, S.L.U. | Spain
| Atlantica DCR, LLC. | United States
| Atlantica Energia Sostenible Italia, Srl. | Italy
| Atlantica Energía Sostenible España S.L. | Spain
| Atlantica Holdings USA LLC | United States
| Atlantica Hystone S.L.U. | Spain
| Atlantica Infraestructura Sostenible, S.L.U | Spain
| Atlantica Investment Ltd. | United Kingdom
| Atlantica Newco Limited | United Kingdom
| Atlantica North America, LLC | United States
| Atlantica Perú, S.A. | Peru
| Atlantica Renewable Power Mexico de R.L. de C.V | México
| Atlantica Solutions, LLC | United States
| Atlantica South Africa (Pty) Ltd | South Africa
| Atlantica South Africa Operations Proprietary Limited Ltd | South Africa
| Atlantica Sustainable Infrastructure Jersey, Ltd | United Kingdom
| Atlantica Transmisión Sur, S.A. | Peru
| Atlantica y Quartux Almacenamiento de Energía S.A.P.I. de C.V. | Mexico
| Atlantica Yield Energy Solutions Canada, Inc | Canada
| ATN 2, S.A. | Peru
| ATN 4, S.A | Peru
| ATN, S.A. | Peru
| AY Holding Uruguay, S.A. | Uruguay
| AYES International UK Ltd | United Kingdom
| Banitod, S.A. | Uruguay
| Befesa Agua Tenes | Spain
| BPC US Wind Corporation, Inc. | United States
| Cadonal, S.A. | Uruguay

| Calgary District Heating, Inc | Canada
| Carpio Solar Inversiones, S.A. | Spain
| CGP Holding Finance, LLC | United States
| Chile PV I | Chile
| Chile PV II | Chile
| Chile PV III | Chile
| Coropuna Transmisión, S.A | Peru
| Day Ahead Solar, LLC | United States
| Diamond FV, Srl. | Italy
| Ecija Solar Inversiones, S.A. | Spain
| Energía Renovable Dalia 1 SA de CV | Mexico
| Energía Renovable Dalia 2 SA de CV | Mexico
| Energía Renovable Dalia 3 SA de CV | Mexico
| Estrellada, S.A. | Uruguay
| Extremadura Equity Investments, Sárl. | Luxembourg
| Fabroen Seconda, Srl. | Italy
| Fotovoltaica Solar Sevilla, S.A. | Spain
| Geida Skikda, S.L. | Spain
| Global Solar Participations, Sarl. | Luxembourg
| Gold FV, Srl. | Italy
| Helioenergy Electricidad Dos, S.A. | Spain
| Helioenergy Electricidad Uno, S.A. | Spain
| Helios 2, Srl. | Italy
| Helios I Hyperion Energy Investments, S.A. | Spain
| Helios II Hyperion Energy Investments, S.A. | Spain
| Hidrocañete, S.A. | Peru
| Hornero ST Dos, S.L.U. | Spain
| Hornero ST, S.L.U. | Spain
| Hypesol Energy Holding, S.L. | Spain
| Hypesol Solar Inversiones, S.A | Spain
| Kaxu Solar One (Pty) Ltd. | South Africa
| Logrosán Equity Investments, Sárl. | Luxembourg
| Logrosán Solar Inversiones Dos, S.L. | Spain
| Logrosán Solar Inversiones, S.A. | Spain
| Menhir Solar, S.L.U. | Spain
| Mojave Solar Holdings, LLC. | United States
| Mojave Solar, LLC. | United States
| Montesejo Carda, Srl. | Italy
| Montesejo Piano, Srl. | Italy
| Montesejo Poggio, Srl. | Italy
| Mordor ES1 LLC | United States
| Mordor ES2 LLC | United States
| Nesyla, S.A | Uruguay
| Overnight Solar, LLC | United States
| Palmatir, S.A. | Uruguay
| Palmucho, S.A. | Chile
| Parque Fotovoltaico La Tolua, S.A.S | Colombia
| Parque Solar Tierra Linda, S.A.S | Colombia

| Raitan ST1, S.L.U. | Spain
| Re Sole, Srl. | Italy
| Rilados, S.A | Uruguay
| Rio-Huan (Inner Mongolia) Solar Co., Ltd | China
| Rioglass Services North America, LLC | United States
| Rioglass Servicios, S.L.U. | Spain
| Rioglass Solar Chile, Spa | Chile
| Rioglass Solar Holding, S.A. | Spain
| Rioglass Solar Internacional, S.A. | Luxembourg
| Rioglass Solar, S.A.U. | Spain
| Rioglass Solar SCH, S.L. | Spain
| Rioglass Solar Systems | Israel
| Rioglass South Africa Pty Ltd | South Africa
| Rising Sun, Inc. | Canada
| RRHH Servicios Corporativos, S. de R.L. de C.V. | Mexico
| Sanlucar Solar, S.A. | Spain
| Solaben Electricidad Dos, S.A. | Spain
| Solaben Electricidad Seis, S.A. | Spain
| Solaben Electricidad Tres, S.A. | Spain
| Solaben Electricidad Uno, S.A. | Spain
| Solaben Luxembourg, S.A. | Luxembourg
| Solacor Electricidad Dos, S.A. | Spain
| Solacor Electricidad Uno, S.A. | Spain
| Solar Processes, S.A. | Spain
| Solnova Electricidad Cuatro, S.A. | Spain
| Solnova Electricidad Tres, S.A. | Spain
| Solnova Electricidad, S.A. | Spain
| Solnova Solar Inversiones, S.A. | Spain
| Tenes Lilmiyah, S.P.A | Algeria
| Transmisora Baquedano, S.A. | Chile
| Transmisora Mejillones, S.A. | Chile
| Transmisora Melipeuco, S.A. | Chile
| Vernay, S.A. | Uruguay
| White Rock Insurance (Europe) PCC Limited | Malta