Japan Turning to Wind Power after the Fukushima Nuclear Power Accident in 2012

Posted by PITHOCRATES - January 19th, 2013

Week in Review

Japan suffered a close call in 2012.  The nuclear power plant at Fukushima survived the massive earthquake.  But the resulting tsunami led to electric problems in the backup power systems.  Which led to the core meltdown.  Something that never happened before.  And is not likely to happen again.  Because they saw what that tsunami did.  And now can prepare these plants to handle future tsunamis.  Still, the Japanese are turning their back on nuclear power.  After it served them so well all these many years (see Japan to build world’s largest offshore wind farm by Rob Gilhooly posted 1/16/2013 on New Scientist).

By 2020, the plan is to build a total of 143 wind turbines on platforms 16 kilometres off the coast of Fukushima, home to the stricken Daiichi nuclear reactor that hit the headlines in March 2011 when it was damaged by an earthquake and tsunami.

The wind farm, which will generate 1 gigawatt of power once completed, is part of a national plan to increase renewable energy resources following the post-tsunami shutdown of the nation’s 54 nuclear reactors. Only two have since come back online…

The first stage of the Fukushima project will be the construction of a 2-megawatt turbine, a substation and undersea cable installation. The turbine will stand 200 metres high. If successful, further turbines will be built subject to the availability of funding.

To get around the cost of anchoring the turbines to the sea bed, they will be built on buoyant steel frames which will be stabilised with ballast and anchored to the 200-metre-deep continental shelf that surrounds the Japanese coast via mooring lines…

Another contentious issue is the facility’s impact on the fishing industry, which has already been rocked by the nuclear accident. Ishihara insists it is possible to turn the farm into a “marine pasture” that would attract fish.

The earthquake didn’t hurt the Daiichi nuclear reactor.  It was the tsunami.  Which flooded the electrical gear in the basement that powered the cooling pumps.  That same tidal wave that swept whole buildings out to sea.  Which it will probably do the same to those buoyant steel frames.  Which means instead of replacing downed power lines after another tsunami they will be replacing windmills.  Making the resulting power outage longer.  And more costly.

The wind farm will not generate 1 gigawatt.  It may have the potential to generate 1 gigawatt.  But that will be only when the winds cooperate.  They have to blow hard enough to spin the windmills fast enough to produce electric power.  But not too fast that they damage the windmills.  Which typically lock down in high winds.  Providing a narrow band of winds for power generation.

Buoyant windmills and underwater power cabling in fishing waters?  Sure, that shouldn’t be a problem.  What are the odds that a boat will run into a windmill?  Or snag an underwater power cable?  The odds of that happening are probably greater than another Fukushima-like accident.  And yet they’re shutting down their nuclear power.  To use floating windmills.

Incidentally, 143 windmills at 2 megawatt each only comes to 286 megawatts.  Not 1 gigawatt.  No, to get 1 gigawatt you’ll need 500 windmills.  Three and half times more than the 143 they’re planning to build.  If the one they start with works.  And they have the money for more windmills after they install the first one.

India has more wind and solar power than anyone else.  Yet they’re adding nuclear capacity because their wind and solar just can’t meet their power needs.  The Japanese should probably reconsider their position on nuclear power.  For even though wind power is green power and it will provide a lot of jobs it will result in massive debt.  And unreliable power.  That money would probably be better spent making improvements to their nuclear power.  Such as getting electric gear out of basements.  And providing a more failsafe power source for their cooling pumps.  For their nuclear plants can survive earthquakes.  And with these improvements they’ll be able to survive a tsunami.  All while providing reliable electric power.  Something windmills just can’t do.



Tags: , , , , , , , , , ,

Comments are closed.

Blog Home