CO2 emission, the equivalent volume of CO2 emitted by about 1 million households for one month. Some companies including Toyota request their employees not to wear jackets and ties even when meeting with business partners. The results for 2006 were even better, resulting in an estimated 1.14 million-ton reduction in CO2 emission, equivalent to the CO2 emissions by about 2.5 million households for one month. The Ministry also stated that it intends to continue encouraging people to set summer office temperatures at no lower than 28 °C as well as to work to have the Cool Biz concept take permanent root in society. In July 2009, the Cabinet Office announced results of a new questionnaire survey, which indicates that 91.8% of respondents knew about the Cool Biz campaign, and 57% of them put the campaign into practice. Economic results On the other hand, the Ministry of Economy, Trade and Industry (METI) analyzed that the Cool Biz campaign increases replacement demand for clothing and generates positive macroeconomic effects on the GDP by 18 billion yen in summer 2005. Dai-Ichi Life Research Institute announced that the total economic effect was more than 100 billion yen in 2005. Warm Biz During winter 2005, there was talk on many of the major news networks of promoting a "Warm Biz" style for winter, suggesting that people wear waistcoats, knit sweaters, and lap blankets. Warm Biz was not endorsed by the Japanese government at first. The food industry eagerly promoted this campaign by selling foods that warm people up, such as nabemono. However, the electric utility industry had little enthusiasm for the campaign. Since fossil fuel heating is popular in northern Japan, Warm Biz had little effect on electric consumption. Thus, Warm Biz is more often referred in an environmental conservation context since fossil fuel heating releases more carbon dioxide than air conditioners do. Super Cool Biz Following the Tōhoku earthquake and tsunami in March 2011, the shutdown of many nuclear power plants for safety reasons led to energy shortages. To conserve energy, the government recommended setting air conditioners at 28 degrees Celsius, switching off computers not in use, and called for shifting work hours to the morning and taking more summer vacation than usual. The government then launched a "Super Cool Biz" campaign to encourage workers to wear outfits appropriate for the office yet cool enough to endure the summer heat. Polo shirts and trainers