Japan facing major electricity supply problems, blackouts

A series of planned electricity blackouts will begin rolling through regions in most of eastern Japan on Monday. The blackouts are intended to manage a dramatic fall in power generation capacity caused by a massive earthquake and tsunami that hit the country on Friday.

The quake, the world's fourth largest ever recorded, caused several nuclear power stations to automatically shut down. A subsequent tsunami further damaged some of the plants and led to problems in at least two reactors.

As a result, Tokyo Electric Power Co. has lost about 27% of its electricity generation capacity and will be short of demand by about 10 million kilowatts, it said Sunday.

The blackouts will affect outlying areas of Tokyo and regions surrounding the capital, but will not hit central Tokyo. Each will last three hours. The blackouts will begin in stages, starting at 6:20 a.m. and run until 10 p.m. daily.

The government warned they could go on for several weeks.

The number of dead and missing stands at around 3,000, but that figure is growing by the hours. A police official in Miyagi in northern Japan told public broadcaster NHK on Sunday that he expects the death toll in his region alone to surpass 10,000.

Japan's Meteorological Agency upgraded its assessment of the quake from magnitude 8.8 to 9.0. The quake was actually three very large earthquakes in quick succession, it said Sunday.

The effect of the disaster on companies and the national economy is difficult to determine.

Several electronics companies have plants in the region that have been offline since Friday.

Toshiba makes microprocessors and image sensors in the region and its factory has been without power most of the weekend, said Keisuke Ohmori, a spokesman for the Tokyo-based company.

"We don't know when we can resume production," he said.

Sony operates several plants in the region and has yet to release information on when they might restart production.

A series of planned electricity blackouts will begin rolling through east Japan on Monday, Tokyo Electric Power said.

Several companies have announced plans to temporarily suspend production at some domestic factories. They include Toshiba, Panasonic and Sharp. The factories are either affected by the earthquake or unable to get components because of disruptions to their supply chain.

"This is the worst crisis in Japan's 65-year postwar history," Prime Minister Naoto Kan said in a televised press conference. "I'm sure that we will be able to overcome the crisis."

Rescue teams from around the world are pouring into Japan and charities have begun raising money for victims.

Sony and Panasonic each said they would donate ¥300 million ($3.7 million) to relief efforts. Sony said it would also provide 30,000 radios to those affected.

Martyn Williams covers Japan and general technology breaking news for The IDG News Service. Follow Martyn on Twitter at @martyn_williams. Martyn's e-mail address is martyn_williams@idg.com

Copyright © 2011 IDG Communications, Inc.

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