They are indeed making preparations to do this, with two of the hydro plants in Nagano (normally producing 60hz) near the crossover point: Ontake and Nezame. Co

They are indeed making preparations to do this, with two of the hydro plants in Nagano (normally producing 60hz) near the crossover point: Ontake and Nezame. Combined they produce about 70,000 KW http://www.nikkei.com/news/category/article/g=96958A9C93819A96E3E1E2E2918DE3E1E2E1E0E2E3E3E2E2E2E2E2E2 http://www.nikkei.com/news/category/article/g=96958A9C93819A...