Tokyo and 15 other prefectures from central to northeastern Japan faced tight power supply-demand situations on Tuesday, as some power plants remain offline following a powerful earthquake last week as well as larger-than-usual electricity consumption due to cold weather.The industry ministry and Tokyo Electric Power Company Holdings Inc. warned a power outage might occur after 8 p.m., affecting around 2 to 3 million households in the areas serviced by TEPCO and Tohoku Electric Power Co., due to a smaller-than-expected decline in consumption despite their requests that power be conserved.La…READ FULL ARTICLE