Japan relies heavily on imports to meet its energy requirements because of a scarcity of natural resources. It is estimated that imports cover 80% of Japan’s primary energy needs. In terms of domestic energy resources, it is only 16% self-sufficient. Prior to the Fukushima Daiichi nuclear disaster of 11 March 2011, Japan had relied heavily on nuclear energy with around 30% of electricity originating from this source. Renewable energy, natural gas and oil are projected to take the market share previously occupied by nuclear fuel in the coming years. Find out more about Japan's energy sector below.