2011 Tōhoku earthquake and tsunami additional power, because TEP's power plants were also damaged in the earthquake. Kansai Electric Power Company (Kepco) cannot share electricity, because its system operates at 60 hertz, whereas TEPCO and TEP operate their systems at 50 hertz; this is due to early industrial and infrastructure development in the 1880s that left Japan without a unified national power grid. Two substations, one in Shizuoka Prefecture and one in Nagano Prefecture, were able to convert between frequencies and transfer electricity from Kansai to Kanto and Tōhoku, but their capacity to do so is limited to 1 GW. With the damage to so
1923 Great Kantō earthquake committed In the wake of the earthquake against thousands of ethnic Korean civilians (Zainichi) and Japanese socialists. The murders were carried out by right-wing groups such as elements of the Imperial Japanese Army, police and vigilantes in Tokyo and Yokohama. This earthquake devastated Tokyo, the port city of Yokohama, and the surrounding prefectures of Chiba, Kanagawa, and Shizuoka, and caused widespread damage throughout the Kantō region. The earthquake's force was so great that in Kamakura, over from the epicenter, it moved the Great Buddha statue, which weighs about , almost two feet. Estimated casualties totaled about 142,800 deaths, including about