The International Association of Twin Cities of San Diego points to business opportunities, cultural ties, and exchanges should the twinning partnership between the Southern California city and Porto advance, according to Jessica Censotti, Executive Director, speaking to Lusa.
The official emphasized that a friendship relationship has already been established between the two communities, describing it as a partnership of great importance for San Diego and Porto. She mentioned the strength of the Luso-American community and the rich history that helped define San Diego's identity.
Although the Southern California city hosts a population of about 20 thousand people of Portuguese origin, it does not yet have a formal twinning agreement with Portugal. Michael McQuary, an honorary member of the Sister Cities International board, clarified that the process begins with friendship and only moves to twinning if both parties deem it advantageous.
Porto and San Diego share characteristics such as coastal location, a sea-focused economy, good higher education institutions, significant biotechnology projects, and notable urban dimensions; Porto is the second-largest Portuguese city, while San Diego is the eighth-largest city in the United States.
Censotti emphasized the relevance of the partnership, citing the sharing of maritime heritage as fundamental. She underlined the importance of connecting cities, businesses, communities, universities, and students through exchanges.
Currently, San Diego maintains 24 global twinning agreements, with practical examples of progress. One such case is the launch of the first direct flight between San Diego and Paris by Air France in May 2027, which was aided by the twinning between San Diego and Marseille, established in 2025.
Jessica Censotti detailed that these connections cover commercial, cultural, and educational aspects, aiming to link students and businesses, but above all promoting diplomacy between citizens and mutual friendship.
The statements were made during the Annual Forum organized by the San Diego International Affairs Board, an event where the city's positive outlook was debated. In addition to hosting preparatory games for the 2026 World Cup, San Diego is preparing for the 2028 Olympic Games, hosted in Los Angeles, where the city will play a role by hosting the Chula Vista Elite Athlete Training Center.
Michael McQuary added that sports offer an opportunity to connect cities to the world stage. Idalmiro da Rosa, Honorary Consul of Portugal in San Diego, considered that twinning would be very relevant due to the similarities between the cities. He highlighted the compatibility of universities in areas such as health and engineering, as well as the great culture and monuments present in both locations, including wines.
Idalmiro da Rosa also mentioned that the biotechnology company FairJourney Biologics, founded in Porto in 2012, inaugurated advanced laboratories in San Diego in 2026. Additionally, Porto's i-charging technology began to be implemented in San Diego's electric vehicle network, in collaboration with EVerged, suggesting that the partnership could open numerous doors for business exchanges.



