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Juan Luis Arregui Ciarsolo
Founder at
Vina Izadi SA
Net worth: 190 M $ as of 2026-06-29
Profile
Juan Luis Arregui Ciarsolo is the founder of Gamesa SA, founded in 1976.
Mr. Arregui Ciarsolo is the founder of Siemens Gamesa Renewable Energy SA, founded in 1976.
Mr. Arregui Ciarsolo is the founder of Vina Izadi SA, founded in 1987.
Mr. Arregui Ciarsolo is the founder of Foresta Capital SA, founded in 2002.
Mr. Arregui Ciarsolo is also the founder of Corp.
Eólica Cesa,Corporacion Eolica Cesa SA,Gestora de Proyectos y Contratos SA. Mr. Arregui Ciarsolo is currently the Chairman of Retos Operativos XXI SL.
Mr. Arregui Ciarsolo is currently the Director of GRL Aceite, starting in 2000.
Former positions include Deputy Chairman of Iberdrola SA from 1995 to 2010, Chairman of ENCE Energia y Celulosa, SA from 2010 to 2019, Co-Chairman of Grupo Guascor SL from 1995 to 2003, and First Vice Chairman of Cartera Industrial REA SA from 2008 to 2018.
Education includes a graduate degree from Université de Franche-Comté and an undergraduate degree from Bilbao School of Industrial Engineering.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-12-30 | 72,502,624 ( 29.44% ) | 190 M $ | 2026-06-29 |
Juan Luis Arregui Ciarsolo active positions
| Companies | Position | Start |
|---|---|---|
Vina Izadi SA | Founder | 1986-12-31 |
Retos Operativos XXI SL
 Retos Operativos XXI SL Financial ConglomeratesFinance Private investment vehicle | Chairman | - |
GRL Aceite | Director/Board Member | 1999-12-31 |
Former positions of Juan Luis Arregui Ciarsolo
| Companies | Position | End |
|---|---|---|
Cartera Industrial REA SA
 Cartera Industrial REA SA Financial ConglomeratesFinance Operates as an investment firm that invests and assists in the development of firms | Director/Board Member | 2018-06-30 |
| IBERDROLA, S.A. | Director/Board Member | 2010-03-24 |
Foresta Capital SA | Founder | 2010-02-04 |
Corp. Eólica Cesa | Founder | 2005-12-31 |
Grupo Guascor SL
 Grupo Guascor SL Trucks/Construction/Farm MachineryProducer Manufacturing Manufactures and sells marine propulsion equipment, gas engines, and co-generation systems | Chairman | 2002-12-31 |
Training of Juan Luis Arregui Ciarsolo
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
38
1st degree connections
15
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 15 |
|---|---|
Siemens Gamesa Renewable Energy SA
 Siemens Gamesa Renewable Energy SA Electrical ProductsProducer Manufacturing Produces wind turbines and provides maintenance services | Producer Manufacturing |
Gamesa SA
 Gamesa SA Electrical ProductsProducer Manufacturing Manufactures and distributes wind turbines, wind farms, photovoltaic plates and other related products | Producer Manufacturing |
Iberdrola SA
 Iberdrola SA Electric UtilitiesUtilities Generates and distributes electricity | Utilities |
ENCE Energia y Celulosa, SA
 ENCE Energia y Celulosa, SA Pulp & PaperProcess Industries Manufactures pulp for the production of paper products | Process Industries |
Cartera Industrial REA SA
Cartera Industrial REA SA Financial ConglomeratesFinance Operates as an investment firm that invests and assists in the development of firms | Finance |
Retos Operativos XXI SL
Retos Operativos XXI SL Financial ConglomeratesFinance Private investment vehicle | Finance |
Grupo Guascor SL
Grupo Guascor SL Trucks/Construction/Farm MachineryProducer Manufacturing Manufactures and sells marine propulsion equipment, gas engines, and co-generation systems | Producer Manufacturing |
Université de Franche-Comté
 Université de Franche-Comté Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Corp. Eólica Cesa | |
Corporacion Eolica Cesa SA | |
Vina Izadi SA | |
Foresta Capital SA | |
Bilbao School of Industrial Engineering
 Bilbao School of Industrial Engineering Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Gestora de Proyectos y Contratos SA | |
GRL Aceite |
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