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
2011 Lorca earthquake 10.000 years. Other scientific research has suggested that the earthquake was caused by human activity. A team led by Dr Pablo Gonzalez of the University of Western Ontario in Canada reported in the journal Nature Geoscience in October 2012 that the pattern of earth movement was consistent with changes in stresses caused by the removal of water from underground reservoirs. 2011 Lorca earthquake The 2011 Lorca earthquake () was a moderate 5.1 earthquake that occurred 6:47 p.m. CEST (16:47 UTC) on 11 May 2011, near the town of Lorca, causing significant localized damage in the Region of Murcia, Spain, and