AIST REPORT 2012

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Screenshot of the intranet (August 12, 2011)Change in power consumption before and after the scheduled shutdowns were implementedToday’s peak power consumption: 25,116 kW (82%)30,00020,00010,0000Power consumption (kW)00020406081012141618202224AIST Tokyo Waterfront, AnnexAIST Tokyo Waterfront, Main BuildingAIST Tsukuba NorthAIST Tsukuba WestAIST Tsukuba EastAIST Tsukuba Central 7AIST Tsukuba Central 6AIST Tsukuba Central 5AIST Tsukuba Central 4AIST Tsukuba Central 3AIST Tsukuba Central 2AIST Tsukuba, Energy CenterAIST Tsukuba Central 1(Time)00200FY2006FY2007FY2008FY2009FY2010FY20114006008002004006008001,0001,2001,400CO2 emissions reducedChange in solar power generation and CO2 emissionsSolar power generated1,000 kWht-CO2Mega Solar Town (Sun Hills, AIST Tsukuba)● Implementation of the shared-use restriction scheme and introduction of a total power consumption monitoring systemWe reduced the total power consumption of main research facilities in the service area of Tokyo Electric Power Co. Ltd. (13 power-receiving facilities in Tokyo and Tsukuba) (implementation of the shared-power use restriction scheme). To help achieve these goals, we have introduced a total power consumption monitoring system that allows real-time monitoring of the power consumption of each site as well as the total power consumption of all facilities.● Introduction of scheduled shutdowns in which sites are shutdown in turns We estimated the effect of shutdowns on the reduction of power consumption from the difference between the day-time and night-time power consumption of each site in the summer of 2010, grouped multiple sites, and implemented the scheduled shutdowns for six weeks Introduction of New Energy SourcesWe installed a solar power system at AIST Tsukuba, AIST Tohoku, AIST Tokyo Waterfront, AIST Chubu, AIST Chugoku, AIST Shikoku, and AIST Kyushu. The amount of solar power generated in FY2011 was 1,220,000 kWh, which is equivalent to powering 339 homes per year, resulting in CO2 emissions reduction of 592 t per year.3,5003,0002,5002,0001,5001,0005000(kWh)Fri, Aug 5, 2011 (normal work day)Fri, Aug 12, 2011 (scheduled shutdowns)Power saved by shutdowns: ~2,000 kW Power saved by turning off standby power: ~400 kW0:001:002:003:004:005:006:007:008:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00We have introduced new energy sources to reduce CO2 emissionsfrom July 25 to September 2, 2011. The power consumption decreased by 600 to 3,500 kW, depending on the week (sites). The rotating scheduled shutdowns have been found to have an additional effect of eliminating standby power by the complete shutdown of equipment due to long holidays.As a result of these measures, in the service area of Tokyo Electric Power Co. Ltd., the power consumption of AIST Tsukuba and AIST Tokyo Waterfront Center was 82% of the power consumption limit of 34,239 kW in July and 76% in August. To reduce power consumption in the summer of 2012, we changed the grouping of the sites at AIST Tsukuba, where the rotating scheduled shutdowns were implemented in FY2011, took more effective measures to reduce peak power consumption, and introduced scheduled shutdowns into other research bases across the country.Environmental Report|53

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