(April 16, 2024, 1:40 PM EDT) -- WASHINGTON, D.C. — A Japanese solar energy investor on April 15 filed a brief in District of Columbia federal court opposing the Kingdom of Spain’s motion to dismiss or stay its petition to confirm an International Centre for Settlement of Investment Disputes (ICSID) arbitral award in its favor worth more than 25 million euros for harming its investment, writing that its action is “unique” because it is not based in the European Union....