日本3月11日大地震和海嘯引發的核危機使得日本東部地區面臨能源短缺的困境。在酷熱夏季到來之時，日本環境省發起瞭“超級清涼夏裝”行動，要求全國將室內空調溫度上調至28攝氏度，鼓勵人們脫下西裝，改穿T恤、短袖襯衫、運動鞋甚至夏威夷花襯衫和涼鞋等清涼便裝上班。環境省大臣表示，推行清涼夏裝行動並不隻是為瞭讓大傢熬過夏天，而是要改變日本人的生活方式。除此之外，日本不少行業都開始實行彈性工作制或者允許員工在傢辦公，同時采取減少辦公室照明，縮短工作時間等方式節約能源。

Neckties are out and casual shirts in, even aloha shirts, as Japanese businessmen shed their conservative dress and stodgy image to save electricity.

　　Neckties are out and casual shirts in, even aloha shirts, as Japanese businessmen shed their conservative dress and stodgy image to save electricity.

　　Japan's March 11 earthquake and tsunami set off an ongoing nuclear crisis at the stricken Fukushima Daiichi nuclear plant, meaning that the eastern part of the country faces a severe power shortage as it heads into the sizzling summer months.

　　Spearheading efforts to stay cool in the office, the Environment Ministry launched its "Super Cool Biz" campaign on Wednesday, a stepped-up version of summer dress-down movements carried out over the past few years.

　　"As we are lacking electricity, the Japanese government is asking for a 15 percent reduction in electricity consumption," said Environment Minister Ryu Matsumoto.

　　"This is not just about surviving this summer, but is a big turning point for changing the way Japanese live and our lifestyle."

　　Workers at the ministry turned to casual attire, coming in tieless and wearing short-sleeved shirts, including brightly-colored Hawaiian-style shirts. Sneakers, blue jeans and t-shirts are all allowed as well.

　　Tokyo Electric Power Company (TEPCO), which runs the Fukushima Daiichi plant, has said it expects summer electricity demand in eastern Japan to be 55 million kilowatts, with the supply tight.

　　Electricity use soars in the steamy summers, when temperatures can rise as high as 40 C (104 F).

　　Public response to the campaign was mixed, with some lauding it for conservation efforts while others said care still had to be taken for appearances.

　　"I think people should choose what they wear, because you can look sloppy," said Yasuko Yokoyama, a 48-year-old housewife.

　　Businesses are adopting their own measures, with some shifting workdays to the weekend, when demand will be lower, setting thermostats higher, and keeping lighting to a minimum.

　　KDDI, one of Japan's largest communications firms, will allow employees to leave early and work from home from June 27. It already is cutting down on lighting use and has set thermostats at 28 C (82.4 F)

　　"Up to now, Japanese had stereotypical habits of working from Monday to Friday, 9 to 5," said Kou Iizawa, a manager at the company.

　　"Though we have had this unfortunate incident, it is acting as a catalyst to change our work habits. I hope we will become as progressive as Western countries -- and we should enjoy our leisure hours more."