Koura Wealth's Rupert Carlyon continues upbeat on the firm's Clean Energy Fund. (Image: Supplied)Kōura Wealth is upbeat overall on the proliferation of data centres internationally at the dawn of artificial intelligence, seeing this building boom as performance-enhancing for its Clean Energy Fund.The United States-focused fund outshone all others in Morningstar’s KiwiSaver report for the quarter to the end of June, with three-month total returns at 31.8%.Total returns for the year to June 30 were 97.9%, while over three years they were 8.7%. Fees total 1.1%.Kōura founder Rupert Carlyon said those returns spoke to the international da...