As artificial intelligence reshapes the global economy, the question of who will power its infrastructure has begun to yield a quiet answer: Japan. The BNP Paribas Green Tigers Fund, Asia's top-performing environmental portfolio, has returned 34 percent this year by wagering that Japanese technology firms — holding near-monopoly positions in critical AI components — are not merely participants in the coming energy transition, but its indispensable architects. In a world racing to build larger models and deploy them at greater scale, the companies that manufacture what cannot be replicated else