Oi! Oi! Nuclear is Back!

Prior to the accident at Fukushima, Japan relied on nuclear power for around 30% of its generation capacity (with plans to raise that to 50% by 2030), and had a total of 54 active reactors dotted around the country’s coast. For the last few months none have been operational because of ongoing public concern over their safety.

With the summer season now upon us however, demand for electricity for air conditioning will skyrocket leaving the Kansai area in particular with a significant shortfall unless some of the nuclear reactors are restarted. The most likely candidate was the plant at Oi, in Fukui Prefecture, part of Japan’s “Nuclear Alley”. This is a place close to my heart, because when I was last living in Japan it was close to my home!

For weeks we have witnessed a pantomime with the nuclear regulator, plant operator, prefectural governments and the Prime Minister all playing roles. This pantomime slowly conveyed to a largely sceptical public a carefully crafted message: this is safe, and this is inevitable. When the Prime Minister finally announced the restart he framed his argument around the importance of affordable electricity for maintaining the Japanese standard of living.

The Oi reactor was restarted this week and is expected to start to transmit electricity from today.

I have just a few thoughts to share:

Firstly, I think it’s incredible that Japan has to-date survived the loss of 30% of its generation capacity without rolling blackouts. This has been achieved through restarting mothballed thermal plants and encouraging people and businesses to save energy.

Secondly, I note with interest that there is no sunset date for the restarted operation of Oi, something which would seem sensible given that the extra demand will only last until the summer ends and that reaching public consensus over the future of nuclear power in Japan is still far off.

Thirdly, I think geothermal electricity generation could in future play a much larger part in Japan’s energy mix. For this source of electricity Japan’s unstable geology becomes a strength rather than a weakness.

Finally, it is worth noting that the Tokyo area still have no nuclear plants in operation. Several years ago TEPCO boasted in a TV commercial that 40% of its power came from nuclear plants in Niigata and Fukushima. I didn’t want them looking silly (again), so I took the liberty of updating their ad.

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