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Three flagship reactors
These plants have a Westinghouse design and their technology is known as PWR (Pressurised Water Reactor), the most common in the nuclear industry. It uses fuel elements made of uranium dioxide enriched to 3-5%. The Ascó and Vandellós II plants are subjected to the strict control of the Nuclear Safety Council, as the regulator, as well as of other independent certification bodies, and they meet high international quality standards.

ASCÓ I
- Endesa Generación (100%)
- Commercial Operation December 1984
- Gross Electrical Power 1032.5 MW
- Reactor type PWR
- Design Westinghouse
- Cooling Ebro River water

ASCÓ II
- Endesa Generación (85%) – Iberdrola Generación (15%)
- Commercial Operation March 1986
- Gross Electrical Power 1027.2 MW
- Reactor type PWR
- Design Westinghouse
- Cooling Ebro River water

VANDELLÓS II
- Endesa Generación (72%) – Iberdrola Generación (28%)
- Commercial Operation March 1988
- Gross Electrical Power 1087.1 MW
- Reactor type PWR
- Design Westinghouse
- Cooling Mediterranean Sea