One of the biggest hurdles to building new power plants in Japan is finding a place that’s safe from earthquakes and tsunamis. That place may turn out to be 30 miles at sea. Sevan Marine ASA (SEVAN) , a Norwegian builder of offshore oil-drilling vessels, is proposing a $1.5 billion natural gas-fired power plant that will float on a cylindrical platform bigger than a football field moored off the Japanese coast. It’s one of several innovative efforts Japan is considering for generating electricity after the Fukushima nuclear disaster in 2011 prompted widespread public concern over how the country will produce electricity — and where. Already, plans are being made to dot the coast off Fukushima with some of the largest floating wind turbines in the world. “We are now focusing on mainly floating offshore wind, but we want to push various types of technical development and research” for floating […]